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Home My WebLink AboutVOL_3_Appendix F Appendices Appendix F Hydrology and Water Quality General Plan Update and Associated Specific Plans EIR The Planning Center ~ Appendices This page intentionally left blank. General Plan Update and Associated Specific Flam EIR The Planning Center PRELIMINARY DRAINAGE STUDY Arrowhead Springs Specific Plan CITY OF SAN BERNARDINO, CA March, 2005 PREPARED FOR American Development Group 24600 Arrowhead Springs Road San Bernardino, Ca 92414 (909) 875-1400 PREPARED BY: TRANS TECH 624 Canyon Road Walnut, CA 91789 Phone: (760)310-8012 F-l TABLE OF CONTENTS Introduction Project Summary Existing Conditions and Background Project Description Discussion Hydrology Methodology Determination of Runoff Coefficient Determination of Average Area Point Precipitation, Low Loss Fraction, and Maximum. Loss Rate Determination of Area Conclusion T ABLE-1 Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Appendix -1 Appendix-2 Appendix - 3 Appenclix-4 Appendix-5 LIST OF TABLES Unit Hydrograph Peak Flow summary LIST OF FIGURES Vicinity Map Vicinity Map/Mapping Vision Soils Group, Southwest-B Area Valley Area Isohyetals, 1 00 Year 1 HR Valley Area Isohyetals, 1 00 Year 6 HR Valley Area Isohyetals, 1 00 Year 24 HR APPENDICES Watershed Information Form-Waterman Canyon and related graphs and worksheets Watershed Information Form-East Twin Creek and related graphs and worksheets General Tables and Graphs from san Bernardino Flood Manual as used for preparation of Watershed Information Forms. HYDROLOGY MAP Unit Hydrograph Analysis Graph F-2 Pa~e No. 1 1 1 2 2 3 3 3 3 3 4 5 6 7 8 9 10 11-22 23-34 35-41 42 43-115 INTERODUCTION The purpose of this drainage study is to determine the proposed condition hydrology for the Arrowhead Springs, a proposed 765(approx.) lot single family housing and Golf Course subdivision on vacant land between Waterman Canyon and East Twin Creek, North of 40th Street and East of HWY 18 to Big Bear/ Arrowhead Lake in the city of San Bernardino, State of California, and to estimate the potential hydrological impact of the Arrowhead Springs development on the East Twin Creek and Waterman Canyon watercourses in San Bernardino County, CA. The Study methodology for hydrology is included and the resulting calculations for proposed condition storm flows are provided. PROJECT SUMMARY The undeveloped IOO-year storm event run off is calculated to be 17,695 CFS including off site storm run off associated with this site under moisture condition of AMC-II. Upon completion of Arrowhead Springs, for lOO-year storm event, the total storm water flow from the project is estimated to be 18,167 CFS. This amount includes off site storm for IOO-year storm event under AMC-III moisture condition. Table-l presents the summary results of hydrology analysis for this area as it is contributing flow to East Twin Creek and Waterman Canyon for purpose of estimating the potential hydrological impact of this development on the above referenced watercourses. EXISTING CONDITIONS AND BACKGROUND Arrowhead Springs is planned for a vacant irregular shaped property bounded on west by State HWY 18, vacant land, and State Forest Land, on south by 40th Street, on east by East Twin Creek, existing Historic Hotel/Spa Resort, and Arrowhead Springs Village and vacant lands, and on north by Lake Arrowhead, Big Bear, Crestline, and vacant lands. The East Twin Creek, Strawberry Creek, and the West Twin Creek that flows through Waterman Canyon compose the major waterways. Arrowhead Springs is divided into these three basins that converge southerly of the property near 40th Street in the City of San Bernardino. Flows continue southerly across 40th Street through the County of San Bernardino Flood Control District percolation Waterman Canyon basins. Drainage from these areas continues southerly along improved drainage ChaIlilelS, ultimately discharging into the Santa Ana River. Portions of the property lying adjacent to West Twin Creek and East Twin Creek are subject to lOO-year flood plain inundations. However, the Federal Emergency Management Agency (FEMA) Flood Insurance Rate Map (FIRM) depicts the flood plain boundaries for the area at north and south ofthis project, a specific 1 aO-year floodplain elevation has not been determined for this region. This indicates, through final hydrology and storm drain design for this tract the design and construction of the proposed storm structures should consider the pad elevations to be above the flood HGL and to satisfy City, C01.mty, and FEMA regulations. The development of the project will require some revisions to be done on FEMA maps, FIRM and FIS. F-3 PROJECT DESCRIPTION This portion of the Arrowhead Springs Property consists of three proposed parcels (4, 5, & 6), some existing development and nndeveloped vacant lands. The proposed parcels 4, 5, and 6 with total of319 acres development consisting of a 765 (approx.) lots single- family residential subdivision and a Golf Course. There are other commercial and residential developments around these parcels as per general plan for the area and all are considered in preparation of the above preliminary hydrology report. DISCUSSION Arrowhead springs will be developed in compliance with all applicable ordinances as required by the local and state agencies. The Golf Course will be graded and improved accordingly. A public street system improved with curbs and gutters and asphalt paving to City standards will provide access to the residential lots, each graded to drain in a positive manner. The existing 100-year flood plain boundaries meander along the water- courses with varying widths as slope and channel characteristics change. Project development along these areas will be limited to golf course, open space or other passive type uses. The proposed structuraVhabitable development areas of the project are significantly above any flood plain areas associated with these watercourses. To protect the development and down stream properties from flood hazard, the drainage system for Arrowhead Springs is designed to transport storm water runoff from each of the sub basins through the site to points where it will be discharged back into the natural water courses. The storm water runoff will generally be carried in the natural drainage courses occurring onsite and within underground pipe systems, Energy dissipaters will be provided at storm drain discharge points as necessary to control erosion. Grading and improvement plans prepared for each final map in the Specific Plan area will include drainage facilities engineered in accordance with the design standards of the City of San Bernardino, Appropriate hydrology and hydraulic calculations will be provided for the City Engineer's review and approval. The development and implementation of the Arrowhead Springs Specific Plan will require storm water management measures to reduce the discharge of pollutants and protect and enhance the water quality in a manner pursuant to and consistent with the Clean Water Act. The Arrowhead Springs project will incorporate Best Management Practices (BMPs) into the design development of the storm drainage and water quality management systems. Construction requirements for the Arrowhead Springs development will include: · Submittal of a Notice ofIntent (NOI) to the State Water Resources Control Board · Preparation of a Storm Water Pollution and Prevention Plan (SWPPP) · Preparation ofa Storm Water Quality Management Plan (SWQMP) F-4 HYDROLOGY METHODOLOGY The preliminary hydrology analyses for the project are attached in this study. The Modified Unit Hydrograph method hydrology of the San Bernardino County Hydrology Manual, August 1986 edition is used. A 1 DO-year storm event (Q100) is used for developed (proposed) condition hydrology under AMC-III of moisture condition. Or undeveloped condition a IOO-year storm event (QIOO) is used with AMC-II moisture condition. At the time of final hydrology and hydraulic analysis for this development, it will be considered all local, state, and federal regulations if any different than above. DETERMINATION OF RUNOFF COEFICIENT Runoff coefficients are dependent on the proposed land use of the basin. Coefficients for this project are those of the San Bernardino County Hydrology Manual. DETERMINATION OF AVERAGE AREA POINT PRECIPITATION, LOW LOSS FRACTION FACTOR, AND MAXIMUM LOSS RATE Average area point precipitation, "I", in inches is determined using Isohytals maps of Valley Area as per Figures B-4, B-5, and B-6 for IOO-year I-hour, IOO-year 6-hour, and IOO-year 24-hour of San Bernardino Flood Manual and method presented as modified hydro graph method in the above Manual. The Hydrologic Soils Group Map for Southwest-B area of San Bernardino County Flood Manual and Arrowhead springs Property Maximum Proposed Land use map prepared by American Development, Inc. are used for determination of average low loss fraction and average maximum loss rate using area area-average weighting method as presented in san Bernardino Flood Manual. DETERM:INATION OF AREA USGS map is used as base of to po for preparation of this study. The catchment's area boundary for each watercourse is determined based on the valleys and ridges shown on USGS map and the slope of the land as it contributes run-off to East Twin Creek and Watennan Canyon. CONCLUSION To allow for grading of building sites and the construction of streets and the installation of utilities and to protect downstream properties, storm water flows must necessarily be controlled in a system of storm drains consisting of both natural channels and man made facilities of the type normally associated with land development. Provided these measures in compliance with City and County of san Bernardino requirements and consistent with accepted engineering and construction practices are taken, Arrowhead Springs can be developed and it and downstream properties kept reasonably free of flood hazard and stonn water pollution. F-5 RESULTS The results of the Unit Hydrograph Analysis are presented in Table-1. Table-1 Unit Hydrograph Peak Flow Summary Hydrograph No. Watershed Area (Acres) Peak Flow (cfs) Waterman Canyon Arrowhead AS-1 Springs, Developed 3394 6450 Condition Waterman Canyon Arrowhead AS-2 Springs, Un-developed 3394 6288 Condition East Twin Creek AS-3 Arrowhead Springs, 5929 11717 Developed Condition East Twin Creek AS-4 Arrowhead Spr1ngs, Un- 5929 11407 developed Condition NOTE: Developed Peak Flows are based on AMC-lIf moisture condition Undeveloped Peak Flows are based on AMC-If moisture condition F-6 -- -- . I' . "'~~< ';- "----'0"';": 'R..: . 0 N' :1 MILES 3 ,) \ - K..nbrook ~'" ~ "~"'. ,.. ~. '""" . I ~~l~~~~~ ~, ..~ I 'lor.'..... , .. ;~ ..~, ~ II $ '\'~".... - -, :::......~ DI..._ _ \ SIooOkH...,. HeN.n~' , . P..I__ __ "- - - - "I }. tw1L , '~ I : -'~:~' ~S} ":;<;,,,):,;,:; ~,'i1fi~' -.","'.... .-. . 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'/ I _ On r ~_ - I 1._]<.. _ .I...., ,,,J,L --:: ., _.1 ..... _ l--- -1 _;--- f- --J' T --11' ',- I""14Cj~ I~ J1 ,11 ,"'I . ,. . I I,,, '~f--i'-ht--';"/J--+ -J-.,,,,, ~I- 0.""'-' \----:!:-,--',,- r-....'.-,l..~'l ' " " ;'M! f:r:~..! ! \ . '~ 'j 0.' ,r ,! \~:. r ~, ~ I j I i ;i:T .~:..' .~,.. _ . -:ti; t .~L'>-..;;.. U J 1....'--, J - - '--- -l- :h... " :..r"--'f>; .~b ' - - - ,;::. 5..~- - . "" r nil .~ ~-=~ ~ :j. - l. l' \ ~ .. l \ I ;:;, I . . 1 ~~~.. ~*~t... ...~",;:~ r z.. . L-l_ _ '''~.' \-. _ . J , J .-- w ~~ ~~ ~ ., , " :lJ "'m nO f:.c fT'IO m "-,0 " I:) -I>;U ~"P F~ 'fT! z "'0(;) :n ~ 1 :-. ~ ~ :z I ~ '- z APPENDIX-l F-13 I' (,.~. rr;;:> - I \t,.urre R M ~ N C'i N ~ PROJECT: .6.Rf\ow H GAD '5.p ~ Gr, u Y\ dC2.-v" DATE: 2- 23- 05" - ENGINEER: 1. Enter the design storm return frequency (years) 2. Enter catchment lag (hours) 3. Enter the catchment area (acres) 4. Enter 'baseflow (cis/square mile) 5. Enter S-Graph proportions (decimal) Valley: Developed Foothill Mountain Valley: Un'developed Desert 6. Enter maximum loss rate, Fm (inchJhow")* 7. Enter low 105s fraction, Y (decimal) 8. Enter watershed area-averaged 5-minute point rainfall (inches) * Enter watershed area-averaged 30-minute point rain- f all (inches) * Enter watershed area-averaged I-hour poInt rainfall (inches)* . Enter watershed area-averaged 3-hour poInt rainfall (i.nc:hes) * Enter watershed area-averaged 6-hour point rainfall (inches) * Enter watershed area-a'ieraged 24-hour point rainfall (inches) * ~ 9. Enter 24~hour storm unit interval (mirKrtes) *Note: enter values unadjusted by depth-area factors f \-.... - Pi fV1C tv ::: iA. I :3 e:, \CO " . Lt'1 3.3 '14- l' " & \oo%. 0'333 (J · l\ \ 1\ 0.5 !; II \.2..5 " \.1 ~ 1\ .,3.4 H 5-3(p II ly-5o 5 (Y)(r\l, ~N BERNARDINO COUNTY VDROLOGY MANUAL WATERSHED INFORMATION FORM ~-14 F'lQUre E-7 R-?R A ~ ...\ I I l~.'. II 'I I' r I', j: f , . 1 I .. ! ! I' I' i I 'i , f' , :r j ~ I F \ J ,... ,L..e. A ~ -4C;. WaJ~r ~ctv\ ~ y\' PROJECT: P;"(fow \-\ C A\) Sp H \N C~S ~ev, DATE: 2.. Z ~- oS ' ENGINEER: 1. Enter the design storm return frequency (years) 2. Enter catchment lag (hotrs) 3. Enter the catchment area (acres) 4. Enter 'baseflow (ds!sqJaCe mile) 5. Enter S-Graph proportions (decimal) Valley: Developed Foothill Mountain Valley: Undeveloped Desert 6. Enter maximum loss rate, Fm (inchJhotr) 7. Enter low loss fraction, Y (decimal) 8. Enter watershed area-averaged .5-minute point rainfall (inches) * Enter watershed area-averaged 30-minute point rain- fall (inches)* : Enter watershed area-averaged i-hour point rainfall (inches) * Enter watershed area-averaged 3-hour point rainfall (inches) * Enter watershed area-averaged 6-hour point rainfall (inches) * Enter watershed area-averaged 24-hour point rainfall (~)* # 9. Enter 24-hour storm unit interval (mu..rtes) *Note: enter values unadjusted by depth-area factors (~O~ ..... p.. Me..:m: ~ '3/~<<14 .e- \ O~ If c' J 3 8 o./fS 11 6.58 .' \.15 \'f Lf " 3. L; S. 3 G " ; ~r' ~ 5 fr1,' (\J , N BERNARDINO COUNTY 'OROLOGY MANUAL WATERSHED INFORMATION FOAM F-15 F'lQUre E-7 R-?R 1..- ~~ .p ! . f ;' .... ! f f .~: AVERAGE AREA POINT PRECIPITATION ARROWHEAD SPRING PROJECT WATERMAN eveN. UNDEV. 100-VR-1 HR ISO-INCH. AREA-AC. WEIGHTING 2.02 205.20 414.50 1.95 555.90 1084.01 1,85 684.70 1266.70 1.75 556.80 974.40 1.65 579.50 956.18 1,55 363.20 562.96 1.47 448.70 659.59 TOTAL 3394.00 5918.33 1= 1.74 INCHES; 100 YR i00-YR- 6 HR ISO-INCH. AREA-AC. WEIGHTING 6.51 31.30 203.76 6,25 844.00 5275.00 5.50 1202.00 6611.00 4.75 906.50 4305.88 4.50 328.60 1478.70 3.90 81.60 318.24 TOTAL 3394.00 18192.58 1= 5.36 INCHES; 100 YR 100-YR-24 HR ISO-INCH. AREA-AC. WEIGHTING 18,10 48.50 877.85 17.00 1315.50 22363.50 15.00 647.50 9712,50 13.00 723.50 9405.50 11.00 445.00 4895.00 9.10 214.00 1947.40 TOTAL 3394.00 49201.75 1= 14.50 INCHES; 100 YR F-16 AREA AVERAGE MAX. LOSS RATE-Fm; WATERMAN CYN. Arrowhead Spring Developed Condition-TOTAL Watershed Land Use Area Fractional Soil Fp Ap Fm Fm*Frac. Ac. Area Group Area OPEN SPACE 3049,00 0.898 0 0.13 1.00 0.13 0.117 OPEN SPACE 1.36 0.000 B 0,30 1.00 0.30 0.000 18-HOLE GOLF COURSE 106,89 0.031 B 0.40 1.00 0.40 0.013 i8-HOLE GOLF COURSE 87.96 0.026 0 0.17 1,00 0.17 0.004 RL-N 50.00 0,015 0 0.21 0.60 0.13 0,002 RM-N 21.03 0.006 0 0.21 0.20 0.04 0.000 RM-N 7.97 0.002 8 0.42 0.20 0.08 0,000 RL-S 1.30 0.000 B 0.42 0,60 0,25 0.000 RL-S 7,50 0.002 0 0,21 0.60 0.13 0.000 RM-S 22,00 0.006 B 0.42 0.20 0.08 0.001 RM-S-HILL- TOP 8.12 0,002 8 0.42 0.20 0.08 0.000 CORPORATE OFFICE 2.76 0.001 B 0.42 0.10 0,04 0.000 CORPORATE OFFICE 7.47 0.002 0 0,21 0,10 0.02 0.000 VILLAGE SHOPPING 3,60 0.001 B 0.42 0.10 0.04 0,000 VILLAGE SHOPPING 1,84 0,001 0 0.21 0.10 0.02 0,000 RES1/C 5,00 0.001 0 0.21 0,10 0.02 0.000 MWD 10.20 0.003 D 0.21 0.10 0.02 0.000 TOTAL 3394.00 1,000 0.138 *NOTE: FOR DEVELOPED CONDITION ASSUMED AMC-11l F-17 AREA AVERAGE LOW LOSS FRACTION-V; WATRMAN CVN. Arrowhead Spring Developed Condition-Total Watershed P24= 14,5 inch Land Use Area Fractional Soil eN S Y Y*Frac. Ac. Area Group Area OPEN SPACE 3049.00 0,898 0 83 2,05 0.89 0.801 OPEN SPACE 1.36 0,0004 B 66 5.15 0,82 0.000 18-HOLE GOLF COURSE 106.89 0.031 B 58 7,24 0.77 0.024 18-HOLE GOLF COURSE 87,96 0.026 0 79 2.66 0,88 0,023 RL-N 50.00 0.015 0 75 3,33 0,86 0.013 RM-N 21.03 0,006 0 75 3.33 0,86 0.005 RM-N 7.97 0,002 B 56 7.86 0.75 0.002 RL-S 1.30 0.000 B 56 7.86 0.75 0.000 RL-S 7,50 0.002 D 75 3.33' 0.86 0.002 RM-S 22.00 0.006 B 56 7.86 0.75 0.005 RM-S-H1LL- TOP 8.12 0.002 B 56 7.86 0.75 0.002 CORPORATE OFFICE 2,76 0.001 B 56 7.86 0.75 0.001 CORPORATE OFFICE 7.47 0,002 0 75 3.33 0.86 0,002 VILLAGE SHOPPING 3.60 0.001 B 56 7.86 0.75 0,001 VILLAGE SHOPPING 1.84 0,001 D 75 3.33 0,86 0,000 REST/C 5.00 0.001 D 75 3.33 0.86 0.001 MWD 10.20 0,003 D 75 3.33 0.86 0.003 TOTAL 3394.00 1,000 0.885 - y= 0.115 F-18 AREA AVERAGE MAX. LOSS RATE~FrTi; WATERMAN CYN. Arrowhead Spring Undeveloped Condition-TOTAL Watershed - Land Use I Area Fractional I Soil I Fp Ap I Fm I Fm*Frac. Ac. Area Grouo Area OPEN SPACE 3250.20 0.955 0 0.13 1.00 0.13 0.124 OPEN SPACE 154.00 0.045 B 0.30 1.00 0.30 0.014 TOTAL 3404.20 0.138 "NOTE: FOR UNDEVELOPED CONDITION ASSUMED AMC-III F-19 AREA AVERAGE MAX. LOSS RATE-Fm; WATERMAN CYN. Arrowhead Spring Undeveloped Condition-TOTAL Watershed Land Use Area Fractional Soil Fp I Ap Fm Fm*Frac. Ac. Area GrOUD Area OPEN SPACE 3240.00 0,955 D 0.32 1.00 0.32 0,305 OPEN SPACE 154;00 0,045 B 0.61 1.00 0.61 0.028 TOTAL 3394.00 0.333 " "'NOTE: FOR UNDEVELOPED CONDITION ASSUMED AMC-II F-20 AREA AVERAGE LOW LOSS FRACTION-Y; WATRMAN CYN. Arrowhead Spring Undeveloped Condition-Total Watershed P24= 14.5 inch land Use Area Fractional Soil eN S Y Y*Frac. Ac. Area GrouD Area OPEN SPACE 3240,00 0.955 D 83 2.05 0.89 0.852 OPENN SPACE 154.00 0.045 B 66 5.15 0.82 0.037 TOTAL 3394.00 0.889 - y= 0.111 F-21 - a::: ::> 0 [ J: , - ...... , I <f'l W :J: U ~ I - ~ l- - <f'l Z I w l- Z - ...J I -' <( I.L. Z <( I a::: ~ : ==:::r:: 9.0 -_ - - ._~ ,-- .-. - '-;;- ~'::~--=-::5t-,-;. -:: . :/.-., .._~ 8.0 ,:: ". \' ~:-l;.== :::'....'-"_1--:.- ~:: .:.:.t--o-.~_':" -~::'f.:~'~.:~~..; ~:;~ :---+--:: :':::"1 -1-""- .. -- --~;;;;' "]"~Et.= .,:;.;_. -- 7.0 t--.I=:~d;,~~E; :J::- ~_:~-:::: :~ - -- ,- - - ','=:t:-~@:=t:.-E: ;;':.:~ .:_~ :::;:~I .6.0 =_-::::,__ ..._j::::~:!:::.. :::: -- ... --, ::--L-~-::J:-; :d:# ,.-~:~ --'1=:1.=:.. :t~ :-. - .... --;.t-":l:::-,"" ' ,u' t. ... ." 'I . . ..' -;<: _ __ _ -' . "'f--+ __.::h- ,- ~..:::; .... ~~,.::"...F:::L--' ::'"= ,'- :,,;::~_~, ..;--.~ --IN::,,: -i;.}'-';-j~t,'f-io_;n..::~; ,;,'1'7,-: l:::::;~i;:;' ....- ...."'..,.'... - .. ~ =1:::_-= .,. E-'-'- c::::::.~ ~.;.:~ .:~."~;. ,,,~::;r;::: "'J' '{.::!."::'==='$'."" _';1;:... ~~""I" ',~ - '" .0 n.... ._ _.::' ....... ~ ::~ ~,;_..~:.~;.:: ~:~_:: >l.'l~:,;~ =-<..., _,":::" .'~: (~.'. .,--'fo":-' _ ., __ _= _' _ ':"-r-.;::':1: ;-l;c~~-'- "E,L" ._~- .';:,t:.. - _. __ '..;f'.;F-;~~? .. - '~-- :t~._I__~ ;~:~~~::~; --'--.-., :: ..~,- ::.':'-" =.:~=-:: ,-, '.' _.._ ..._ -:::-E . -:;C' r':r.., =~ --~- I.- '-'f:.:' -- ;:;.::F-~..-- ~: :..r:= ....' _' --::----::;; .::};=::~~.~ .~:. ~.--_..~ :':::e-~'~~.~ ._ _~.:":,- _~-;'-'_; c,:' 1::::; - '~-''-: =- ,-' """,,=--- ;~~ t=I' ~i;~ ~:~~ __ ~':'::;F" =-:~: '=:0 ~I: ~~:~.- . '-'-~-' 4.0 .- ~':$.~ 3.0 ~~ .;:"'~ ; ..-. , C-,=!=_ _ 2 0 ~:='~-~::r:~- ~.~..'a._ - - - - -, - - - - -- - - l .. ,. .. ' .. " , .. , ~ H' d.O 0,9 O,S- 0.7 ',II ," 'r" : f 3 .~ : .: " r', -- - - -_. .. .~. ~ I' , _..~' ~::::. ~f ~:'~~t~~~ ~ - , .;;::~ :::!:. ~ ~'-:: .u ~I: ~"-~,:~~~.I~ 0.6 --- 'iij .. 0.5 0.4 0,3 ~~_ -",":-'.- .- -- '~ .. : ,J::.' O,2~ .......1::::=.. ~-- '-'._~ .f-- ....... f:-.; -~ ,- L;:;; I-- . . ,... ;~:s:.: -f-'--'-- .:..~--- ....... .' ft:l..... ~ - , .. ~~ ~ -~- .. -I-- r- ... t. " II , . "~r a. ~. ;r. . .' 1.,1'; 1\ 'I ," .' " " 'I' .. .' ; , .. 0.1 2 20 30 40 ~o 60 70 80 90 STORM DURATION (MINUTES) II 51Y\'1"3- '1 )(S~o.5B DESIGN STORM FREQUENCY = \00 YEARS \, - G;O ONE HOUR POINT RA1NFALL=BB-1NCHES "&0 M\~.:' !-;~""30~1.2SIl LOG-LOG SLOPE:;: o. c.. ~c PROJECT LOCATION: }.\~RowHe~D sp,~\~~) w~'\G-~ fC)f\\\.,J c.,,,.tC~~ "6 7 8 9 10 4 '5 3 \J:{I,J.e V ' SAN BERNARDINO COUNTY HYDROLOGY MANUAL INTENSITY - DURATION CURVES F-2:t:ALC UL AT tON SHEET t I I I ! i .\ I I' '. " .' , , , . -, IH ! 1 I I I, , i' ~ ~ ! ; i , ! I , I j I 1, !,. . ! i 11 1 1 ' ;\ U \: !; 1\ I ~ Ii j I \ j ~ t iH t! ~o.o E$tJ: i 1:.J q t. :.::: 40.0 ... .' . 30.0 J.' . +ft. .. ... 20.0 . ....1-'.1- . " l i.. " 10,0 I. r I I r .. !, -i ) m " S.O ~ .... ~- 4.0 J t 3.0 _ - E:: 2.0 , L to * o,~ 0.4 . ~ 0,2 0.1 ' 5 I , " , t l: 'r i l.l .1 i .i, 'II 10 20 ~ . I ~ I . d7i ,.,,, ..j.' :i: * .. :' :...f: " -'.' I I r' "I- ili. .' H' -t 1 ~ ~ ~~ .:~ " ,11' +- l. . , 1 . ,.- ~ !.ll; ::: .;::-~... 4" ... ,++-- ..... .. .. ,. ::.~ . ,--::.1" ... ...~~. :r : 1000 PROJECT LOCATfON ARRDc..:> ~~P.D .gPR \N6S J wATe;12. mAN .C'1(O' R ,1 NOTES l-H ~ \,14 ~ H R ~ 5".3 Ct,.' \ . ,- -.,.~ - ... '! ::c:: -. . ..:-t, . 1......~ .t:: "t.1 :. ~ ....,..~ _....,_ t- '. ~ r .:- 1= I I-" ,,' " 1-';':: i I 11; 1, I I ; I .t, 114 I I , I .' I' I 30 40 ~o +f ~ i ..... .... .... - 18 ~!: .... . -t-. r,.:l :'::. .. .. ~... + ~ -ti.;t:t - ,J.. 0;-' ...;.a-. ! t I. I '1/ I , :-f.' I 1:1 +' ; -.;..,- . t I r.' .1 : , ~ ! I . - '" .U: .. :.&J '...... ~-- -..... .......... -::..:::..t. :~; -' .:-:ct.. :r::t-:. + r'" :t::t-.:::: 1-- '?-= ,..p r-.... . ....--r I ~~ -;11 i T,' 1 ' ~ . , i-- ... ... _t:'""'-~'" ...- -- ~- 1+ .; :./:. ttlffi. , I' ' !. : ~. ~ .1 ~ I +-~ : 1Z +...... +.. , .1 I-:- . . tti ,H- -! ~ ...: 'J: .t E: ... ~. K ',' 'r . , I ~ ,. , I 1;1 I -1- I .. I 'j 111 tr 100 200 300 400500 STORM DURATION-MINUTES J '1 \-\(< 6~i U \1 J..vJ, SAN BERNARDINO COUNTY HYDROLOGY MANUAL :;. 3 4 /.+11 AREA - AVERAGED MASS RAINFALL F-23 PLOTTING SHEET ..........-..~;,---- - ..... ::t I. l l j I I I I 1 J I. II 11 ! ; j I t ' 1 ; , I },i I \ , . , , f, ' i ~ : /i I r 1 I I ; 'I' ~ i i = , , i I: ~ ; tll~.tt' t I' l- ... ; ~ .' . , '+1 I i I -+ -1 . , " t: =f :: ...... :..: t=;' 1_' .. ., - -..~ . ~i:.:.. J .. -'1 r ! ..... ,~, to ~o.o ...... ........ .t-.~ .00 ..,.... r ., 30.0 _ "-H: 1, --:tt . .. ..u ;. - t++-ri 20.0 1-1. .- .- I~. 10.0 , . I. I I" "'" II '". I I! . i +I ),111 H I' , I I I I ' I ", ...... .....~ , -; , h-H+ ~+ 1 '\' I :..::+~ t:b= . ....:r:;::..J. n..... ........ ,.... ,.... ..... .;: 1: . .... " I ..1 . =:, -c:.:t. ----- ':1:= -:~ ...... ,.....,.... - :1~ ~'" ~. - ) 1: ~.O 4.0 .. Tt?" ~ J 1 + ,., j: .-::=; 3.0 _ '.:';.t -- - ,+-+- ...... ... t: .Z- , 2.0 J 1.. .- iI:ofl 1.0 .il 'n \. -y o.~ 0,. .' 1 ~. t 1 " l- ..: 'J-.: ~. r' -r - I- , 0.3i~ ~ .." ~,::F:!.: :r. :E-' .;p :.;-, j r.F--~E L .it:. '~H' h.... -h- .. 0.2 ;. . ......, r::;:;: 1 -;- , 1=" f-! - .' 4+~~-!" , ~ I . ; [ 1-"1: ;--t;, I . .. "tf I I' J . I: ' .. ~ 1 j I. :: l f I 1'-: 1 I 20 30 40 ~o 100 ::.'i"'~ . " II' . I , ~_ : t;! :r: ....... ...,..... ;'4 ~ .H,l~ f: +-:-', j'l I ". l- . ~ '-t, -f! " ., . , r ;,,". . t-+ . . "t::::... . -:;: ~ --.:: =- :r.+.::: I I. ......".... . :'>;. " ~. ....:: ..~-: ,;.~ +- -+- . ~~::: ~. -....- ;...-- ...H . .:::,S.'*: ..... . 4" __ ::::::t:. .. r~ ::::. .....= .. .::.l:I....::t~ =~;:H= -:~: 'to _I .1 1'1 I 1 I 'I. lIt.: 1i " .,' .' i I '1.1 I f I J I 'r:i 'I I ,. I , I I , :mo -400500 \,IOOOf" &,"115 .J /"t(l.,;; 3. '02." F ~ ~. '1 5 $' <OH~.=. 5.:3 ,\ V.-tl-l~::r 14- 3 e. f. ~''1''!{ ,.- :.: ~~':~. , II I ' I j1 ' " : I}J ~: ~; . illl f ill j I fill f I 1 I I I. I 0,1 I, I I . T 11 l(.).,S.~a faInT 'f'~~c~.(). ..~.'" ~.4 (;," " ."",~ ! - , fY11'IJ.""- \ . a w> ': 1-:- - e>' Q... ?.--:::;, \\ ; r...- C"J ~f)';;\'\14 ~ PROJECT LOCATION ABRow\16t\D 5t\~\"-lCkS}CAj 1.J~k'("lV\b..~ C.Y10. NOTES 10D j~, Po I' r'\t P Y'.!!! C( ~ . I " r- " .,......- --h: I , .......... .,... ....... ;tl.: ~. . a ~ I' i. , . ; , .I~ I .;... "'t.:;" -~_ ..-<~ --+- t I I I 200 STORM DURATION -MINUTES 3.. 3~ l+ l~ 'tiJ.<<\j. SAN BERNARDINO COUNTY HYDROLOGY MANUAL F~4 AC.. - --.;.... - .~ !1 : "t 'I.r ." . f . I; I I I .! ., '"I fl:1 I '" ." ~~ ~. ~ . i' .-- ,..-- ~.-- :1...-"'= ~: --:~~;:: w~ ~- t'!:!' "t .. + I ... T"': :!z :r. -- - ........ t.~ I j I .! n . I IT, + :-1 ~. " I .. :i J- : -+ ~. ....l+' ,. --rt, .-...~ - :;. (5'~ s./Y)) AREA - AVERAGED MASS RAINFALL PLOTT\NG SHEET I I 1 I I I I I " ~I ::1 Ji { l APPENDIX-2 F-25 ,... H...,~ H' ...;Ii ~ c~"'::I1 TWIN C.~E:6k PROJECT: .AR Row HeA D SPRC;:. DATE: 2..- Z ~- ~ ~. v.. Y\d.ev. ENGINEER: 1. Enter ,the design storm return frequency (years) . 2. Enter catchment lag (holrs) 3. Enter the catchment area (acres) 4. Enterbaseflow (ds/SClJMe mile) 5. Enter S-Graph proportions (decimal) 6. Valley: Developed Foothill Mountain Valley: Undeveloped Desert Enter maximum loss rate, Fm (inch/hotr) Enter low loss fraction, Y (decimal) 7. 8. Enter watershed area-averaged 5-minute point rainfall (inches) * Enter watershed area-averaged 30-minute point rain- fall~)* : Enter watershed area-averaged I-hour point rainfall (inches) * Enter watershed area-averaged 3-hour point rainfall (inches) * Enter watershed area-averaged 6-hour point rainfall (inches) * Enter watershed area-a\;eraged 24-hour point rainfall (~)* , 9. Enter 24-hour storm unit interval {minutes} "Note: enter values unadjusted by depth-area factors f -. (-\ I'"" \ \1' , ~> C 10...... I, if '.",- 1 ;l\ - 0.' "\ n' ." .'. - '~C' 100 o. 4 ~ I ~/9 29 ~ . j I t ~ Ice I. (.':).3ZS o. '0'1. 1\ 0.(;.25 \. 33\\ \. 1 B 1\ 3.5 . S. t..t 0 1,-\. I~ 5 · Qty)irJ' . AN BERNARDINO COUNTY iYDROLOGY MANUAL WATERSHED INFORMATION FORM F 26 FtgUr! E-7 'F.-?~ r I J,..,e... H ~ - .., e~?\ -rW\N c.~Ce~ - DEV. PROJECT: ~ R ~DW H€f\ \) 5?R\~C;S DATE: Z,...Zg - 0$. ENGINEER: 1. Enter the design storm return frequency (years) 2. Enter catchment lag (hotrs) 3. Enter the catchment area (acres) 4. Enter -baseflow (cis/square mile) 5. Enter S-Graph proportions (decimal) Valley: Developed Foothill Mountain Valley: Un'developed Desert 6. Enter maximum loss rate, Fm Ci.nch!hot..-) 7. Enter low loss fraction, Y (decimal) 8. Enter watershed area-averaged 5-minute point raInfall (inches) * Enter watershed area-averaged 30-minute point rain- fa11~)* . Enter watershed area-averaged i-hour point rainfall (inches) * Enter: watershed area-averaged 3-hour point rainfall (inches) * Enter watershed area-averaged 6-hour point rainfall (inches) * Enter watershed area-averaged 24-hour point rainfall (inches) * l' 9. Enter 24-hour storm unit interval (mi.n.rtes) *Note: enter values unadjusted by depth-area factors J~o~(,-A ""'C.:!II:. - ~'4 ~ ~ I I I €!!!?- \ 0" I. , i ! 0'/ ~ 2 o' 1 \ 0 f\ 0.(." 2 S i ., ~ y I I' 1.33 " 1. ~) 8 I! 1 ! I I t j I ~J. L:- v .~ ::;"' '0 !-f rLf-.l 5" M \t~' - AN BERNARDINO COUNTY .aYDROLOGY MANUAL WATERSHED INFORMATION FORM F 27 F'lQUre E*7 R-?~ " ,j'c H', d ' , J 'ill 'l...i , , .. l. t ,'.. r , I I 'f! : I : ?u. I *tl .~ - :.a:" "" -..... + . ittii I ffiH4 ~" ~"1" .- . ., , II III , I , if. I:: 1 :...r.. .... .... .! t~.. .:: -- ............ g s.._ !o.o _ ., f ;-:r ..,._ ....- , j-;- ... , . .1- - - ~ .~ ..4 ........ .0.0 '1" " ~. ,~.l!r.l..:j: h-'", 30.0 .. " ur " -~ . 1" ~:.: _ :r: t-ll; ... .' ~ :. ....r,.:. :'::. ... ..... 'C..:' ....... ',- 20,0 '~'" ..' l' I. '. " ~. -t-+ :- -t , rt . I +- H ~ . ti~:l''::::: . ~;;; ~-:"1:... :n..:.; T ~ -::-.:::::::1' ~: ~ -.. ...-.. :::::-::to: _,.. :~-F::;:~: - ~" ..,..-+ -t-m . Lo ~t " I, j , ,'~li-Pf I ! ~ ,11 ~r t II : ., r.-, ...... ."-1": I ~ I I ; .1 "p j I. I:;,l, . I! ;11 . : AI" IT II I I' f " - ! T'" - + -ol' ++I:.rt,'+ ,7' " I. l-;~ _ .. ........ " .....- ~~ =,,9 - ....... .... t.:;: .;:;;.;;:-==:- .. ,,",- ..:: =.:t 'f.:~ ." :: -t+h !~. ~E: J: ,~.~. - ~' .' ,'-r __ 1="'; . ' . I ~k . 1=' ~ ~ . I , . . I. I .:. .l _ :. *-,-:-~~'!:.:-j-I-t-~ I ," '" j' 1 Ji\ I .,,~-;lTr:r-Tf~, 1 II f ,,' -rT I I I I I I I' 0,,"",'11:', ...TT'I I 'Iii"~ I ill1.., , ", 0.1 I, T I ,I I 1 I :TI ,I, ,.:' I I I, "II II, It' I ! I 11 0f I I I I , , ~ 10 20:30 40 ~O 100 200 300 400 50() 1000 ~~Jv...S.t~ pO\\'\+ ?Y"e!A'f' 3t1R: ~.1~)&, 3.5; 3.3~ SP)i('J.:I' 1S ~ (.1<0.&7..5:: G.Lt1 J f, ..154 STOR M DURATION - MINUTES ~""H R::: t!J.'l ~')C.5". Y .# S. 3 3~ Mitl' I 1\ 2.411{1..~ ~."'r(hcl4.l"'/I.j'75' \I-\P-'" 1''34 "f:;) T PROJECT LOCATION i>lf.\Rol..,j H€A 1:> ~, R\N(;; E A sTt.Jn) c ~6e~ NOTES \D 0 'i'C' PO\NT 10.0 1 ' I 1_ I t." ". IJ' 1.1 t . !' ~ n LII t I' T I I '.... .. '';''~' *~ :;--~ n rJ ~ U ~ 5.0 I J 4.0 J ' <l ':L 3,0 Il- l: .';{ 0:: 2.0 T I: I +: I I .,- III .t' , i .. I i I , I' . f::' I I I .,' ij. I i I 1 , I , ....._ -....,., _.. -r:. ...::::..:::: 't~:;: .... ......~..... t.... ~-P-~ ~~ .1.........--. --+- - .,.~. rn ,~~.... - t :...:J.: f= + r.ti . *t Ii ~ , t... _: - -'-:'r~"- _ ..... .... . Z' " I .~ ltG +J4.I. D Q. 1.0 . I n:1 I' !- I ~ /tilt- t I I:! 1 . -4 ~J ~ .: ~ I " t ; , .... ...,. 0,4 O,31~ o.~ P R ec..,} f> · 5J929 , A c:.. . . L\ yl J.. . SAN BERNARDINO COUNTY HYDROLOGY MANUAL F-28 + I I , , - ~:=: +----"" :::-;.: : ... -... ~.... :.t. I I + "":' .. +tt. .. :;" .t ; AREA - AVERAGED MASS RAINFALL PLOTTING SHEET ....... . .~- 1''': :1z ,I jl ~ ~ I ~ Ii II .J-... t.. ~ T. .j f:...-'i.(.. r: 0 <.1-'& f::.o."'14 I i i I AVERAGE AREA POINT PRECIPITATION ARROWHEAD SPRING PROJECT EAST TWIN CREEK UNDEV. 100~YR~ 1 HR ISO-INCH. AREA-AC, WEIGHTING 2.04 1035,00 2111 .40 1.95 852.50 1662,38 1.85 852.50 1577,13 1.75 1308,50 2289.88 1,65 669.00 1103.85 1.55 522.50 809.88 1.47 689.ao 1012.83 TOTAL 5929.00 10567.33 1= 1.78 INCHES; 100 YR i00-YR- 6 HR ISO-INCH, AREA-AC. WEIGHTING 6,65 921.00 6124.65 6.25 896.40 5602.50 5.50 1500.50 8252.75 4,75 1605.60 7626.60 4.50 819.90 3689,55 3.90 185.60 723.84 TOTAL 5929.00 32019.89 1= 5.40 INCHES; 100 YR 100-YR-24 HR ISO-INCH. AREA-AC. WEIGHTING 18.40 1084.00 19945.60 17.00 1244.00 21148.00 15,00 1238.00 18570.00 13,00 1082,00 14066.00 11.00 918.00 10098.00 9.10 363.00 3303.30 TOTAL 5929.00 87130.90 1= 14.70 INCHES; 100 YR F-29 AREA AVERAGE MAX. LOSS RATE-Fm; EAST TWIN CREEK Arrowhead Spring Developed Condition-TOTAL Watershed Land Use Area Fractional Soil Fp Ap Fm Fm*Frac. Ac. Area Group Area OPEN SPACE 5619,78 0,948 D 0,13 1.00 0.13 0.123 OPEN SPACE 142.11 0.024 B 0.30 1.00 0,30 0.007 CORPORATE OFF/CElC 3.77 0.001 D 0,21 0.10 0.02 0.000 INTERNATIONAL HOTEUC 17.00 0.003 D 0.21 0.10 0.02 0.000 HISTORIC HOTEUC 25,00 0.004 D 0.21 0.10 0.02 0.000 COMMERCIAL GEN. 0,70 0.000 D 0.21 0.10 0.02 0.000 GOLF COURSE 4.15 0.001 B 0.40 1.00 0.40 0.000 SPA ClUBtC 22,00 0,004 D 0.21 0.10 0.02 0.000 RESIDENTIAL MED/12fAC 12.14 0.002 B 0.42 0.20 0.08 0,000 RESIDENTIAL MEDI12fAC 47,04 0.008 D 0.21 0.20 0.04 0;000 VILLAGE SHOPPING/C 8.50 0,001 B 0.42 0,10 0.04 0.000 VILLAGE SHOPPINGfC 26.81 0.005 D 0,21 0.10 0.02 0.000 TOTAL 5929.00 1,000 0.132 ONOTE: FOR DEVELOPED CONDITION ASSUMED AMC-/11 F~30 AREA AVERAGE LOW LOSS FRACTION-V; EAST TWIN CREEK Arrowhead Spring Developed Condition-Total Watershed P24== 14.7 inch Land Use Area Fractional Soli eN s y Y"Frac. Ac. Area Group Area OPEN SPACE 5619.78 0,948 0 83 2.05 0.89 0.847 OPEN SPACE 142.11 0.024 B 66 5,15 0,82 0.020 CORPORATE OFFICElC 3,77 0.001 0 75 3.33 0.86 0,001 INTERNA llONAL HOTEUC 17,00 0,003 0 75 3.33 0.86 0.002 HISTORIC HOTEUC 25,00 0.004 0 75 3,33 0,86 0.004 COMMERCIAL GEN. 0.70 0.000 0 75 3.33 0.86 0.000 GOLF COURSE 4,15 0.001 8 58 7.24 0.77 0.001 SPA ClUB/C 22,00 0.004 D 75 3.33 0.86 0.003 RESIDENTIAL MED/121AC 12.14 0.002 B 56 7.86 0.75 0.002 RESIDENTIAL MED/12/AC 47,04 0.008 D 75 3.33 0.86 0,007 VilLAGE SHOPPING/C 8.50 0.001 B. 56 7,86 0.75 0,001 VfLLAGE SHOPPfNG/C 26.81 0.005 0 75 3.33 0.86 0.004 TOTAL 5929.00 1.000 0.890 - y= 0.110 F-31 AREA AVERAGE LOW LOSS FRACTION-V; EAST TWIN CREEK Arrowhead Spring Undeveloped Condition-Total Watershed P24= 14,7 inch land Use Area Fractional Soil eN S y Y*Frac. Ac. Area Grouo Area OPEN SPACE 5762. 10 0.972 0 83 2.05 0.89 0.868 OPENN SPACE 166.90 0.028 B 66 5.15 0.82 0.023 TOTAL 5929.00 0.891 - y= 0.109 F-32 AREA AVERAGE MAX. LOSS RATE-Fm; EAST TWIN CREEK Arrowhead Spring Undeveloped Condition-TOTAL Watershed .......- Land Use Area Fractional Soil Fp Ap Fm Fm*Frac. Ac. Area Groul') Area OPEN SPACE 5762.10 0.972 D 0.13 1.00 0,13 0.126 OPEN SPACE 166.90 0,028 B 0,30 1.00 0.30 0,008 TOTAL 5929.00 0.135 *NOTE: FOR UNDEVELOPED CONDITION ASSUMED AMC-III -==---- F-33 AREA AVERAGE MAX. LOS.S RA TE-Fm; EAST TWIN CREEK Arrowhead Spring Undeveloped Condition-TOTAL Watershed Land Use Area Fractional Soil Fp Ap Fm Fm*Frac. Ac. Area GrouD Area OPEN SPACE 5762.10 0.972 D 0.32 1,00 0.32 0.311 OPEN SPACE 166,90 0.028 B 0.61 1.00 0.61 0.017 TOTAL 5929.00 0.328 *NOTE: FOR UNDEVELOPED CONDITION ASSUMED AMC-lI F-34 _.; _ : = == C::'=-- 'd .--... ~ .__-::l. =====:=:...;::..-:-':::-:-:" :;:j:-:- ~:: -.......~ - ":.-t::;;t:;-: ;:-::.. ::::1:::-' :~. - ~R:'=~=;=:'- =: ~~~~~:-: - ~ 8.0 ::-.. t...... =.. . _ ,._,..:~ =.-...;, ==-+..1-= ;C:::::::~= ~ :. ._ "=,,S ":.. ~~=I=-::: ~c:= -.,. 2 =::.17-=1.= _.. :;~::.--:-;-: ""-- -' ..:.~ -= 7.0,---, .+-_ ._ . -.1-,. ":=:r..=f~ =. I-l::'-_':~' =::::::::1 -i=:" ' -~ .~. ::..- .":..... - -" .....:j:::. .;;.:/-......... . '~::'j . ~. -,.: '_-:.= 6.0 -..-:........::. ..1::::-:-.:'" =--.J. t"~':.:+=t=J:'---=L' ...~::.:..-:-: - .. "'-1-"'~" ....t.... ..;,. ? _ .. _ ". . .n..l--. .-' . .:, ,H I:=~:::' ~..:l;.;= ::.U;_~. _ . ",:, 1K .. ~i' -~j ::::,' f:~'7*:: '~.J":':-""=I::' =-'''1'':- --_.;;.0. ,".. .-.: =1;,.::1:::""::= == -=':.1-:.. ~ -:~ ::.::. ""i.; .: -:;;..;;. .'~~" H~:' ":r 'I,:;!.~",C:;;;;:J,'- ;:.,.",-. ";':~;"l: . ~ ~ ::-~c -: j; ~~ ~':'~ ~~ :;,- ~.: ~~~; ~~,f~~~i t1~ )_~- :~if;~ ... . ;..... ~ .... .. _ k:::::' :-..:: .... .. . .... ...: f-.:... =,:::- - __ __ - .. ~ ~_~ 1..:'..::.... .~. -::::.- :....;....;... ~.. .. ".= g.- . :-::-::==-~... ~"=~~ -,~k..-: ... :~ -_ - ... _ -~~-= el ~ 5 'fi 9.0 3~O .. .~ a:: ::> ~ 2.0 G: .:-::: :~~ :-< ...... (f) W :J: fJ Z >- I- 1.0 (f) Z 0.9 ~ 0.8 3: 0.7 j 0.6 <t LL Z <( 0: 0,4 I '. ~ r' I 1 .,' , , , ,'" , , l ,'1 .... ;:::; - ~ -::::1 "- -I 0.5 .. If . ~Ii'- ::=E::.:- - ~ or. - ~ ~ ...;;::=:1 0.3 .~ ~.. -. ~~-: ~ .. ..~... .-... ;"::t__ . . . .~- ~ ::. . ~.._-- u-- -,* =~~~ ..~ ;;;.-: ~:= 0.2 1=:::::.. :;::.~ ~ _u .~ - f--o-. .~- - .n .f--- "'- ._ -::::~-- -- .....:. _. -- - ....-.: :::: -- '-':!P ,_. li;. - r'" ..,-j-n -;-- t"- ~ .,~ , . Ie +:- -;t- 0.1 2 -" ,. I' ;< -', II , , , 3 ~ 30 4(J ~O 60 70 00 ~ " (MINUTES) 5 PllrJ..::::: "7-5 x5::o,~21 tOO '2. ,,~ II '30 t"\ltJ .$ - )(. '30::r \. 3 ~ ~0 6 7 B 9 10 STORM DURATiON 20 4 DESIGN STORM FREQUENCY;:; \00 YEARS ONE HOUR POINT RAINFALL;:; \.18INCHES LOG-LOG SLOPE 0: 0 Co PROJECT LOCATION:: P\RR OW~ e.A D SPR.\~~c;.S I I::f\ -oT ,. W \ N c.. P1 E. 5- k:. c..f^.. SAN BERNARDINO COUNTY HYDROLOGY MANUAL INTENSITY - DURATION CURVES F-35 CALCULATION SHEET I ;1 ! j , ; I . ! -J ; ~ ' . ~ ! I ' ill: 1 ,[ : Ii ; ~ i ! i I I I ' 1 ! i 1 . j , I l! I I. . , I ~ I: : iI' ll, ; j . I I I 1 \: ! \: I \ Iii ' I I I : I I I j I r ,I J.~ It' t t ~ I lEtt 50,0 HT> IH , ':.J . qr.. ~ :1 ... ~ -l ~ .. .l.:. "0.0 " , 30?O . 1 Ut; ~ } I.,... ... ~ 20.0 ~... , , 10.0 f..... ... U) UJ :I: I 1 0 ;; 5.0 , I ..J 4.0 ..J oCt 3.0 u. Z oCt a:: 2.0 t- +#i+ Z - 0 0.. 1.0 .' I.tl I '" I I o. I. I, !I' ttrli . , , ' I' ! , -I- ... __.... .. 1-~ a1 i . l . o.~ 0.4 0.3 , . .. . '~ - . . ...~. -to ..... . is: .I:; ..i. ,:1 ;. . 'T'. -.. h~ --'1- ... r, .- tJ: ~... 0.2 O,j- ~ ~ . . I';' I I ~ 1-" I : ii' J I ',' :'j T II... I T I .., ., I I" ; I! l' I ' . 20 30 40 ~O 100 , . I I \0 ~ . , ... lli.8t. :t::,:" ~.. -. . ~. r"< -+- '" n- ::' - ;;: ~ , , .' 0 I ,f;; I, f' +~ " f 0 . " . . . W2' * . 'I;:- :: ~Tf- +.. ." -i , .H ... 1: .. - :p;.:= .+ .....= ..~:.L.-_ ,7'~ :...;..:.~ - ~~ :r:b~ "'r-...&.- I , , 'i, ' I' T ~ ... I :.t. , l.t . !' +ti, .1 ~l +.: I I" 0 .-:;: :i.'.I- ; -..... ...-..-,.. ~: m t1 IT I .: l~- ~t:................. ""t'....... . ..,-;-t- f:: 1.. -l-..... .l... . . :i . $ - .... - H - ., . . .. " .{;, I , 'I" I I , 4i'l ' 'I!I , " 0 , I, ii T 1.-1 1 J 200 300 400500 1000 STORM DURATION-MINUTES PROJECT LOCATION A~ROw HE-AD SPR\tJC.,S, E~sT TW\~ CR'EEK. ~ "'-\ ,II NOTES I D .) 'f'. ) I. H ~::::: \ 'l @, c;., H ~ t==' 'S' 4\ I,). Y\d.. . SAN BERNARDINO COUNTY HYDROLOGY MANUAL F-36 1 ... '3 t"\ f'..:r. 3 ... 5 " Ef:-.l" AREA - AVERAGED MASS RAINFALL PLOTTING SHEET J , ..f l' :; J I I I I t i Ii 1'1 f il : I j : ' ! I ~ ~ ~ : ! APPENDIX-3 F-37 - Curve (11 Num!:r, of Hydrolodc Soll-Cl?ver Complexes For PervlOCJl Ar'eu-AMC n L Qua.llty of Soil Group . Cover Type (3) Covet (2) ^ B C 0 r NA TURAL COVERS - I Barren 71 86 91 93 (Rockland, eroded and graded land) Chaparral. Broadleaf Poor n 70 80 S, I (Manzonita, ceanothu, and JCrub oak) Fair. ~ 63 n &l Good :H '1 11 73 I Chaparral, Narro~leaf POOC" 71 32 a3 91 (Chami.se and redshank) Fair " 72 !l 86 GraM, Annual or Perennial POO<<' &7 73 86 8CJ I fair .50 69 19 84 Good 33 61 14 &0 . I Meadows or Ciene!&S . Poor &3 77 &, .u (Areas with seMOnally high water table. Fair '1 70 80 34 principal vegetation is sod forming grass) . Goo9 30. '3 71 73 I Open Brush Poor 62 1& M U (Soft ....ood shrubs - buckwheat. sage, etc.) Fair " 6.6 n &3 Good .1 63 7j &1 t Woodla.nd Poor ., &6 17 33 (Coniferous or broadleaf trees predominate. Fair 36 60 73 79 I Canopy density is at lean .50 percent.) Good 2' " 70 77 'II oodland, Grass . U POO(" '7 73 82 I (Coni1erous or broadleaf trees with canopy Fair 44 &, 77 82 density from 20 to '0 percent) . Good ]3 '8 72 79 URBAN COVERS - Residential or Commercial Landscaping Good 32 56 69 7' (lawn, shrubs, etc.) _-0.- -~.' " Turf Poor '8 74 33 37 (Irrigated and mowed grass) Fair 44 ,.5 77 82 Good 33 ,s. 72 79 - - ^GRICUL TUR^L COVERS - , F&1low 77 36 91 94 (Land plowed but not tilled or seeded) SAN BERNARDINO COUNTY' CURVE NUMBERS FOR HYDROLOGY MANUAL PERVIOUS MEAS F 38 ,.. r Fi~ure C-3 (I of 2) .~ Curve ( I) Numbers of Hydrole<<le SoU..cover Com~lexa For Ptnloua Ateu-AMC U Quallty of Sell Crouo Cover Type (3) Cover (2) ^ B e- rr ^GRICUL TUR^L COVERS (Continued) legume5f Close Seeded Poor " 71 ., I' (Alfalfa, sweetclover, timothy, etc.) Cood .n 72 &l I' Orchards, Evergreen Poor 51 7) 12 && (Citrus, avocados, etc.) FaIr ... " " 12 Good . J) '1 72 7' Pasture, Oryland Poor 61 7' 16 a, (Annual grasses) Fair 4' '9 7' 14 Good J' 61 7' 10 . Pasture, Irrigated Poor ,a 7. .ai 17 (Legumes and pereoolal grass) Fair " " n a2 Good J) 'I n 7' Row Crops Poor 72 11 U 91 (Field crop' - tomatoes, Jugal" beets, etc.) Good '7 7a a, I' Sma.11 grain Poor " 7' a.. U (Wheat, oats, barley, etc.) Good ,) 7' IJ &7 Notes: 1. All curve numbers are far Antecedent Mo'isture Condition CAMe) u. 2. .Quality of caver definitions: Poor-Heavily grazed, regularly burned areas. or areas of high burn potential. Less than 50 percent of the ground surface is protected by plant cover or brush and tree canopy. fair-Moderate cover with 50 percent to 75 percent of the ground surface protected. Good-Heavy or dense cover with more than 75 percent of the ground Sllrface protected. 3. See Figure C-2 for definition of cover types. , SAN BERNARDINO COUNTY CURVE NJWBERS HYDROLOGY FOR MANUAl PERVIOUS AREAS --- . F-39 C-1 Fi9ure C-3 (2 of 2) ACTUAL IMPERVIOUS COVER . . Recomm~nded Value Land Use (0 For ^verage Range-Percent Conditions-Percent (2) Natural or Agriculture 0 - 0 0 Pub lie Park 10 - 25 15 , School - 30 ~ 50 40 Single Family Residential: (3) 2.5 acre lots . 5 - 15 10 1 acre lots. 10 - 25 20 2 qwelHngs/acre 20 - 40 30 3-4 dwe l1irigs/acre 30 - 50 40 5-7 dwellings/acre 35. - 55 :;0 8-10 dwellings/acre 50 - 70 60 More than 10 dwellings/acre 65 - 90 80 . Multiple Family Residential: Condom iniums 45 - 70 65 , Apartments 65 - 90 80 . Mobile Home Park 60 - 8.5 75 CommerCial, Downtow~ Business 100 90 or Jndustrial 80 - Notes: 1. Land use should be based on ultimate development' of the watershed. Long range master plans for the County and incorporated cities. should be revi~wed to insure reasonable land use assumptions. 2. Recommended values are based on average conditions which may not apply -to a particular study area. The percentage impervious may vary greatly even on comparable sized lots due to differences in dweUing size, improvements, etc. Landscape practices should also be considered as it is common in some areas to use ornamental gravels underlain by impervious plastic materials in place of lawns and shrubs. A field investigation of a study area shall always be made, and a review of aerial photos, where available, may assist in estimating the percentage of imperviou's cover in developed areas. 3. For typical equestrian subdivisions increase impervious area .5 percent over the \lalues recommended in the table abol/e. . SAN BERNARDINO COUNTY HYDROLOGY MANUAL F~40 ACTUAL IMPERVIOUS .COVER FOR DEVELOPED AREAS .... 0 Figure :J . L-,-l I 1. - ~~ H-t- ,__ '-... I I 0-, , ~ .t:. ......- .so !""J Z co ~ o ~ z ... <t El co en 10 z "0 m C\! 1-. II ->- a.Cl...J ., Z ~~ 0 w :' I- u>- I- co _ t <f? u t; f--t- . b ,. Z ~ w + I-W() a. i- ...J a:: a:: (J) --<1-0 OW t: ~ l1.. lL.. a:: '- >- x - lJ.J i- ~- -j ~ =4 :. I r , ... I 1 - ,I i I ,. ~ Ie II I : +- ~~+. I,.,. I !: I , I I . I I " ~ I 'I I ' , t .J I " I I I t j . Cl i. ; IJ t j - 'h : 0. O'! CO INFILTRATION RATE FOR PERVIOUS AREAS (Fp) Inches/hour C\! I I I . I . i " r ) I'-: :I ~ ,7 -- :--j' I "-l I I I I -H-,' I I , I I . 1.- , 'r ~I--+ 1-- l- I ,) -f F .I +. ; I i I , I I , I r <'! SAN BERNARDINO COUNTY HYDROLOGY MANUAL F-41 , I I I I .\. -- I J V' I f .J.... I ~ ., .I + r.. r T , . I I ! I I I ' ! j I I 'I IJ I I : .~ I ~T " 1 1.$ I LL , I I I rJ It) . '" ,if .I I I . I I ' , " en 1-1- OIJ.. 000 z:lt"D en o a: co::::::> w. :r-~ 00 . <t(f)U) me.. (/)I' 1J.Jc:n 1-2..J <XO..J O::I-::t: (/)<!z .. en ..J wOlJ.J<t: -- I- ...J a:: a: f- o ..I- - Z I -, JIr .I' I I -.I' . .J ... " .A '.J I L ! I I- "f , , I , 1. I ~. . ' I " .l- i- I . l I. l't- I I I I .+ . I I ~+f-7 f T. .+ q- . r - fi) I --I .11 , ; I~l I ..,.-,' ~ ,.,. I I " rI' T I I I I . J ,., I I . I , ., 'I r 1 I II I I , J I .I . I , 1 j I- 1 ; I I o 2 'j j ~~[ 1 u~ 1 ~ ( "t:~ o <J'l .--,,~ ~ ('J r/'r" ('/J ~ fl 11 2tL tJ\!.- o r-- - ':: ...9 ~ ~ z utf- - :z o - o CD 0: lLJ m ~ ::l, Z ~ ~ 0:: ::> o en o (/) t::t I U :E <t o ~ o /'f) I"' I ~ : I' :1 I I: o C\J o ij I I i ! , ' ", INF!LTRATION RATE FOR PERVIOUS AREAS VERSUS S C S CURVE NUMBERS n '" 'l..{.' TO. '(, QS'WO -- ~~ Ql'S'J ...;S, ~...... I. ,--<\tp ~ " ---~ " --- i'--., " "- I~, '- 90 4 w 0:: cs: z ~?.S j ~ 80 C) a:: o l.\. z Q " ~ 10 ~ t- g; (.) W a: Q. ... 60 z (5 Q. , It. '0 ; 50 LlJ ~ ILJ Q, 40 30 24-HOUR 6-HOUR , ; l1"'~ ," / f""'-..... ~ J,:,HOUR , ~""--- i i \ \- ~~ ~~ ~~ \f\"~" . '\ ~, "" '" "' '- "r--.-.. "'~ -- ~ ""- ''" ~~~UTE ""',- - ~.............. S-MINUTE ...............---- --- If : ;1: . 'I ---. ,; ~ , ; i '-~UR I i j ! I i. I 20 j I o ~(r'2.0S'~' (fl. o. ~..s, Ii'i. 50 100 AREA (SQUARE MILES) . A ~ R. 0 LV r\ 6A D ~pC\ V1..-S 'S J I~O ~l~~~~tlt .' SAN BERNARDINO COUNTY F-4 ~ HYDROLOGY MANUAL DESIGN STORM DEPTH AREA CURVES r n ;;: 0.015 1. Drainage area has fairly uniform, gentle slopes 2. Most watercourses either improved or along paved streets 3. Groundcover consists of some grasses - large % of area impervious 4. Main water course improved channel or conduit 0.020 i. Drainage area has some graded and non-uniform, gentle slopes 2. Over half of the area watercourses are improved or paved streets 3. Croundcover consists of equal amount of grasses and impervious area 4. Main watercourse is partly improved channel or conduit and partly greenbelt (see n ~ 0.025) 0.02' 1. Drainage area i5 generally ro11108 with gentle side slopes 2. Some drainage improvements In the area - streets and canals J. Groundcover consists mostly of scattered brum and grass and small 96 impervious. . . 4. Main watercourse is straIght channeJs which are turfed or with stony beds and weeds on earth bank (greenbelt type) , - n .. - n ;;: n = 0.030 1. Drainage area is generaUy rolllng with rounded ridges and modera te side slopes 2. No drainage improvements exist in the area 3. Groundcover includes scattered brush and grasses 4. Wa tercourses meander in fairly straIght, unimproved channels with some boulders and lodged debris 0.0.0 1. Drainage area is composed of steep upper canyons ....ith modera te slopes in lower canyons 2. No drainage improvemenu exist in the area 3. Groundcover: is milc:ed brush and trees with gras$es in lower canyons _ 4. Watercourses have moderate bends and are moderately Impeded by boulders and debris with meandering courses 0.0>> 1. Drainage area is quite rugged with sharp ridges and steep canyons 2. No drainage improvements exist in the area J. Groundcover, excluding smaU areas of rock outcrops, includes many trees and considerable underbrush 4. Watercourses meander around sharp bends, over 1arge boulders and considerable debris obstruction - n = - n :: - n 0.200 1. Drainage are!, has comparatively uniform slopes 2. No drainage improv~ments exist in the area 3. Croundcover. consists of cultivated crops or substantial growths of grass and fairly dense small shrubs, cacti, or similar vegetation 4. Surface characteristics are such that channelization does not occur ,~ BERNARDINO COUNTY tiYDROLOGY MANUAL 43 BASIN FACTOR DESCRIPTIONS ~,.. ,- :,1 , I , ! , I ". i, ; 1 i i I I i I I, ! { l: II :' I' I :' ! : i ., I , , ~ : ':! f " ; '\ .J ,I .f i i : I l I ; ,I 1 ".. .... TABLE C.2. Fm (in/hr~V ALUES FOR TYPICAL COVER TYPES SOll GROUP COVER TYPE ^ (I) p ^ B C o NATURAL: Barren 1.0 0.41 0.27 0.18 0.14 Row Crops (good) 1.0 0.59 0.41 0.29 0.22 Grass (fair) 1.0 0.82 0.56 0.40 0.31 Orchards (tair) 1.0 D.8S ,0.62 0..43 0.:}4 Woodland (fair) 1.0 0.95 0.69 0.50 0.40 URBAN: Residential (I OW! AC) 0.80 0.78 0.60 0.45 0.37 Residential (2 DU! AC) 0.70 0.68 0.53 0.39 0.32 ,. Residential (4 DU! AC) 0.60 0.58 0.45 0.34 0.28 ..... Reside'ntial (10 DU!AC) 0.40 0.39 0.30 0.22 0.18 Condominium 0.35 0.34 0.26, 0.20 0.16 Mobile Home Park 0.25 0.24 0.19 0.14 0..12 Apartments 0.20 0..19 0..15 0.11 0.09 Com mere ial/Jndustrial 0.10 0.10 0.0,8 0.'06 0.05 " NOTES: (1) (2) (3) (4) Recommended ap values from figure C-4 AMC II assumed for aU Fm values eN values obtained from Figure C-3 DU/ AC=dweJling unit per acre ( :f:446 APPENDIX-4 F-45 , ..... ) mCi' \ r-'" f'l0\ .(.W (I) (l S~~ 6 z f'1 1;1:l:C z~ -T'\ Cl~ ,1J \ g~ t;j-4 .......AJ Cl f'I{"i ~o :C zr. {"iiO .......t- t;jAJ -If'I ~(I) ,(1 (1 d ...(:t:. {"it@. -\ ...... .(.10 ~ Q -pC/) ~ (l -4f'l -I ....... f'1 ...... ~ y- o z t./) ~ ~ o r tn fJ'l ';J f'"\ -c... tP(/)~ O"'OiO CiOo ~z<. ');>G\J: AJV'lf'l ...(Cl1='" ('10 ~ 10 J> r <.1"\ ~y- -\{/l rr1-\ iO-I {/l~ :r:....... Qz (l iO f'I f'\ r.. F-46 :C(1:C ~~~ -\...(f'I qolO (/)Z~ A ~ d w-o t@."S z~ O(l ~-\ -< ~ :r:.J7 -<.70 0/0 lOW o-Z: r-:r:. Orl C\J7 -<d 5:(/) J>v v/O r-4 Z C\ (/) APPENDIX-5 F-47 **************************************************************************** F L 0 0 D R 0 UTI N G A N A L Y S I S USING COUNTY HYDROLOGY MANUAL OF SAN BERNARDINO(1986) (c) Copyright 1989-2002 Advanced Engineering Software (aes) Ver. 8.0 Release Date: 01/01/2002 License 10 1542 Analysis prepared by: TRANSTECH ENGINEERS, INC, 624 Brea Canyon Road Walnut, CA 91789 ************************** DESCRIPTION OF STUDY ************************** * WATERMAN CANYON * UNDEVELOPED CONDITION * * * * ************************************************************************** FILE NAME: AS-l.0AT TIME/DATE OF STUDY: 12:03 03/04/2005 F-48 **************************************************************************** FLOW PROCESS FROM NODE 1.00 TO NODE 2.00 IS CODE = 1 >>>>>SUBAREA RUNOFF (UNIT-HYDROGRAPH ANALYSIS) <<<<< -----------------------------------~----~~---------------------------------- -----------------------------~-----------~---------------------------------- (UNIT-HYDROGRAPH ADDED TO STREAM #1) WATERSHED AREA = 3394.000 ACRES BASEFLOW = 0.000 CFS/SQUARE-MILE *USER ENTERED "LAG" TIME = 0.490 HOURS CAUTION: LAG TIME IS LESS THAN 0.50 HOURS. THE 5-MINUTE PERIOD UH MODEL (USED IN THIS COMPUTER PROGRAM) MAY BE TOO LARGE FOR PEAK FLOW ESTIMATES. FOOTHILL S-GRAPH SELECTED MAXIMUM WATERSHED LOSS RATE (INCH/HOUR) 0.333 LOW LOSS FRACTION = 0.111 *HYDROGRAPH MODEL #1 SPECIFIED* SPECIFIED PEAK 5-MINOTES RAINFALL(INCH)= 0.58 SPECIFIED PEAK 30-MINUTES RAINFALL(INCH)= 1.25 SPECIFIED PEAK l-HOOR RAINFALL (INCH) 1. 74 SPECIFIED PEAK 3-HOUR RAINFALL (INCH) 3.40 SPECIFIED PEAK 6-HOUR RAINFALL (INCH) 5.36 SPECIFIED PEAK 24-HOUR RAINFALL (INCH) 14.50 *OSER SPECIFIED PRECIPITATION DEPTH-AREA REDUCTION FACTORS: 5-MINUTE FACTOR = 0.825 30-MINUTE FACTOR = 0.825 1-HOUR FACTOR 0.825 3-HOOR FACTOR 0,975 6-HOOR FACTOR 0.985 24-HOUR FACTOR 0.992 UNIT HYDROGRAPH TIME UNIT 5.000 MINUTES UNIT INTERVAL PERCENTAGE OF LAG-TIME = 17.007 =====~=~========================================================~=~~=~==~=~= UNIT HYDROGRAPH DETERMINATION INTERVAL NUMBER "S" GRAPH MEAN VALUES UNIT HYDROGRAPH ORDINATES (CFS) 1 2 3 4 5 6 7 8 1. 112 3.972 8.270 14 . 027 23,093 40.739 56,602 64.590 456.415 1174.010 1764,123 2362.960 3721.370 7243,110 6511.134 3278.796 F-49 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 70,054 74.597 78.312 81.413 84.114 86,481 88.450 90.133 91.679 93.009 94.182 95.115 95.981 96.569 97.118 97.667 98.032 98.122 98.210 98.298 98.387 98.474 98.562 98.650 98.738 98.826 98.914 99.002 99,090 99.178 99.266 99.354 99.442 99.530 99.618 99,706 99.794 99.882 99.970 100,000 F-50 2242.409 1864.988 1524.745 1272.823 1108.722 971. 371 808.551 690.703 634.514 545.824 481.546 383.101 355,334 241.444 225.182 225.232 149.899 37.194 36,157 36.060 36,251 35,919 36.201 36.016 36.107 36.110 36,107 36.110 36.107 36.107 36,107 36.107 36,107 36.107 36,107 36.107 36.107 36 , 107 36.107 12,470 **************************************************************************** UNIT PERIOD (NUMBER) UNIT RAINFALL (INCHES) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 0.0361 0,0362 0.0362 0.0363 0.0363 0,0364 0.0364 0.0365 0.0366 0.0366 0.0367 0.0367 0,0368 0.0368 0.0369 0.0369 0.0370 0.0370 0.0371 0.0372 0.0372 0.0373 0.0374 0.0374 0.0375 0.0375 0.0376 0.0377 0.0377 0,0378 0.0379 0.0379 0.0380 0,0380 0.0381 0.0382 0.0383 0.0383 0.0384 0,0385 0.0385 0.0386 0.0387 0.0387 0.0388 0.0389 0.0390 0.0390 0.0391 0,0392 0.0393 UNIT SOIL-LOSS (INCHES) EFFECTIVE RAINFALL (INCHES) 0.0040 0.0040 0.0040 0.0040 0.0040 0.0040 0.0040 0.0040 0.0041 0.0041 0.0041 0.0041 0.0041 0.0041 0.0041 0,0041 0.0041 0.0041 0.0041 0.0041 0.0041 0.0041 0.0041 0.0042 0.0042 0.0042 0.0042 0.0042 0.0042 0.0042 0.0042 0.0042 0.0042 0.0042 0.0042 0.0042 0.0042 0.0043 0.0043 0.0043 0.0043 0.0043 0.0043 0.0043 0.0043 0.0043 0,0043 0.0043 0.0043 0.0043 0.0044 0,0321 0.0321 0.0322 0.0322 0.0323 0.0323 0,0324 0.0324 0.0325 0.0325 0,0326 0,0326 0.0327 0,0327 0,0328 0.0328 0,0329 .0.0329 0.0330 0.0330 0.0331 0,0331 0.0332 0,0333 0.0333 0.0334 0.0334 0.0335 0.0336 0.0336 0.0337 0.0337 0.0338 0.0338 0,0339 0.0339 0,0340 0,0341 0.0341 0.0342 0.0343 0.0343 0.0344 0,0344 0.0345 0.0346 0,0347 0.0347 0.0348 0,0348 0,0349 F-51 52 0.0393 0.0044 0.0350 53 0.0394 0.0044 0.0351 54 0.0395 0.0044 0.0351 55 0,0396 0.0044 0,0352 56 0.0396 0.0044 0.0352 57 0,0398 0.0044 0.0353 58 0.0398 0.0044 0.0354 59 0.0399 0.0044 0.0355 60 0.0400 0.0044 0.0355 61 0.0401 0.0044 0.0356 62 0.0401 0.0045 0,0357 63 0.0403 0.0045 0.0358 64 0,0403 0.0045 0.0358 65 0.0404 0.0045 0.0359 66 0.0405 0.0045 0.0360 67 0.0406 0,0045 0.0361 68 0.0407 0.0045 0.0362 69 0.0408 0.0045 0.0363 70 0,0408 0.0045 0,0363 71 0.0410 0.0045 0.0364 72 0.0410 0.0046 0.0365 73 0.0412 0.0046 0.0366 74 0.0412 0.0046 0.0367 75 0,0414 0.0046 0.0368 76 0,0414 0.0046 0.0368 77 0.0416 0.0046 0.0369 78 0.0416 0.0046 0.0370 79 0.0418 0.0046 0.0371 80 0.0418 0.0046 0.0372 81 0.0420 0.0047 0.0373 82 0.0420 0.0047 0.0374 83 0.0422 0.0047 0,0375 84 0.0422 0.0047 0.0376 85 0.0424 0.0047 0,0377 86 0.0425 0.0047 0.0377 87 0.0426 0.0047 0.0379 88 0.0427 0.0047 0.0379 89 0.0428 0.0048 0.0381 90 0.0429 0.0048 0.0381 91 0.0431 0.0048 0,0383 92 0.0431 0.0048 0.0384 93 0.0433 0,0048 0.0385 94 0,0434 0,0048 0.0386 95 0.0435 0,0048 0,0387 96 0.0436 0,0048 0.0388 97 0.0438 0.0049 0,0389 98 0.0439 0.0049 0.0390 99 0,0441 0.0049 0,0392 100 0.0441 0.0049 0,0392 101 0,0443 0.0049 0,0394 102 0.0444 0.0049 0.0395 103 0.0446 0.0049 0.0396 104 0.0447 0.0050 0.0397 105 0.0449 0.0050 0.0399 106 0.0450 0,0050 0.0400 107 0.0452 0.0050 0,0401 108 0.0453 0,0050 0,0402 F-52 109 0.0455 0.0050 0.0404 110 0.0456 0.0051 0.0405 111 0,0458 0.0051 0.0407 112 0.0459 0.0051 0.0408 113 0.0461 0.0051 0,0410 114 0.0462 0.0051 0.0411 115 0.0464 0.0052 0.0412 116 0.0465 0.0052 0,0413 117 0,0467 0.0052 0,0415 118 0.0468 0.0052 0.0416 119 0.0471 0.0052 0.0419 120 0.0472 0.0052 0.0420 121 0.0474 0.0053 0.0422 122 0.0476 0.0053 0.0423 123 0.0478 0.0053 0,0425 124 0.0479 0.0053 0,0426 125 0,0482 0.0054 0.0429 126 0.0483 0.0054 0.0430 127 0.0486 0.0054 0,0432 128 0.0487 0.0054 0.0433 129 0.0490 0.0054 0.0436 130 0.0492 0.0055 0,0437 131 0.0495 0.0055 0.0440 132 0.0496 0,0055 0,0441 133 0,0499 0,0055 0,0444 134 0.0501 0.0056 0.0445 135 0.0504 0.0056 0.0448 136 0.0505 0.0056 0,0449 137 0.0509 0.0056 0,0452 138 0.0511 0.0057 0.0454 139 0.0514 0.0057 0.0457 140 0.0516 0.0057 0,0459 141 0.0519 0.0058 0,0462 142 0.0521 0.0058 0.0463 143 0.0525 0.0058 0.0467 144 0.0527 0.0059 0,0469 145 0,0493 0.0055 0.0439 146 0.0496 0.0055 0.0441 147 0.0500 0.0056 0.0445 148 0.0503 0.0056 0.0447 149 0.0508 0.0056 0.0452 150 0.0510 0.0057 0,0454 151 0.0516 0.0057 0,0459 152 0.0519 0.0058 0.0461 153 0.0524 0.0058 0.0466 154 0.0527 0.0059 0.0469 155 0.0533 0.0059 0,047 4 156 0.0536 0.0060 0,0477 157 0.0543 0.0060 0.0483 158 0.0546 0.0061 0,0486 159 0.0553 0.0061 0.0492 160 0,0557 0,0062 0,0495 161 0,0564 0.0063 0.0502 162 0.0568 0.0063 0,0505 163 0.0577 0,0064 0,0513 164 0,0581 0.0064 0.0517 165 0.0590 0.0065 0,0525 F-53 166 0.0595 0.0066 0.0529 167 0.0605 0.0067 0.0538 168 0.0610 0.0068 0.0542 169 0.0704 0.0078 0.0626 170 0.0709 0.0079 0.0630 171 0.0719 0.0080 0.0639 172 0.0724 0.0080 0.0644 173 0.0736 0.0082 0.0654 174 0.0742 0.0082 0.0659 175 0,0755 0.0084 0.0671 176 0.0762 0.0085 0.0677 177 0.0777 0.0086 0.0690 178 0.0785 0.0087 0.0698 179 0.0802 0.0089 0.0713 180 0.0812 0.0090 0.0722 181 0.0833 0.0092 0.0741 182 0.0845 0.0094 0.0751 183 0.0871 0.0097 0.0775 184 0.0886 0.0098 0.0788 185 0.0584 0.0065 0.0519 186 0.0613 0.0068 0.0545 187 0.0684 0,0076 0.0608 188 0.0731 0.0081 0.0650 189 0.0775 0.0086 0.0689 190 0.0870 0.0097 0.0773 191 0.1221 0.0136 0.1086 192 0.1656 0.0184 0.1472 193 0.4785 0.0277 0.4507 194 0.1005 0.0112 0.0893 195 0.0787 0,0087 0.0699 196 0.0645 0,0072 0.0573 197 0.0903 0.0100 0.0802 198 0.0857 0.0095 0.0762 199 0.0822 0.0091 0.0731 200 0.0793 0.0088 0.0705 201 0.0769 0.0085 0.0684 202 0.0748 0.0083 0.0665 203 0.0730 0.0081 0.0649 204 0.0714 0.0079 0.0634 205 0.0615 0.0068 0.0547 206 0.0600 0.0067 0.0533 207 0.0585 0.0065 0.0520 208 0.0572 0.0064 0.0509 209 0.0561 0.0062 0.0498 210 0.0550 0.0061 0.0489 211 0.0540 0.0060 0.0480 212 0.0530 0.0059 0.0471 213 0.0521 0.0058 0.0463 214 0.0513 0.0057 0.0456 215 0.0505 0,0056 0.0449 216 0.0498 0.0055 0.0443 217 0.0529 0.0059 0.0470 218 0.0523 0.0058 0.0465 219 0.0518 0.0057 0.0460 220 0.0512 0.0057 0.0455 221 0.0507 0.0056 0.0451 222 0.0502 0.0056 0.0447 F-54 223 0.0498 0.0055 0.0442 224 0.0493 0,0055 0.0438 225 0,0489 0.0054 0,0435 226 0.0485 0.0054 0.0431 227 0.0481 0,0053 0.0427 228 0.0477 0.0053 0.0424 229 0.0473 0.0053 0.0421 230 0.0470 0.0052 0.0418 231 0.0466 0,0052 0.0414 232 0.0463 0.0051 0.0412 233 0,0460 0.0051 0,0409 234 0.0457 0.0051 0.0406 235 0.0454 0,0050 0.0403 236 0.0451 0.0050 0.0401 237 0.0448 0.0050 0,0398 238 0.0445 0,0049 0.0396 239 0.0442 0,0049 0.0393 240 0.044 0 0.0049 0.0391 241 0.0437 0.0049 0.0389 242 0.0435 0,0048 0.0386 243 0.0432 0.0048 0.0384 244 0.0430 0,0048 0.0382 245 0.0428 0.0047 0.0380 246 0,0425 0.0047 0.0378 247 0,0423 0.0047 0,0376 248 0,0421 0.0047 0.0374 249 0.0419 0.0046 0.0372 250 0,0417 0,0046 0.0371 251 0.0415 0.0046 0,0369 252 0,0413 0,0046 0,0367 253 0,0411 0.0046 0.0365 254 0.0409 0.0045 0.0364 255 0.0407 0,0045 0.0362 256 0.0405 0.0045 0.0360 257 0.0404 0.0045 0.0359 258 0.0402 0.0045 0.0357 259 0.0400 0.0044 0.0356 260 0.0399 0.0044 0.0354 261 0.0397 0.0044 0.0353 262 0.0395 0.0044 0.0352 263 0.0394 0.0044 0,0350 264 0.0392 0.0044 0.0349 265 0.0391 0.0043 0,0347 266 0.0389 0.0043 0,0346 267 0.0388 0.0043 0.0345 268 0.0386 0.0043 0.0344 269 0.0385 0.0043 0.0342 270 0.0384 0.0043 0.0341 271 0.0382 0.0042 0.0340 272 0.0381 0.0042 0.0339 273 0,0380 0.0042 0.0337 274 0.0378 0.0042 0,0336 275 0,0377 0.0042 0.0335 276 0,0376 0.0042 0.0334 277 0,0374 0.0042 0.0333 278 0.0373 0.0041 0,0332 279 0.0372 0,0041 0.0331 F-55 280 281 282 283 284 285 286 287 288 0.0371 0.0370 0.0369 0.0367 0,0366 0.0365 0.0364 0.0363 0.0362 0.0041 0.0041 0,0041 0.0041 0.0041 0.0041 0.0040 0,0040 0.0040 0.0330 0.0329 0,0328 0.0327 0.0326 0.0325 0.0324 0.0323 0,0322 TOTAL STORM RAINFALL (INCHES) 14,38 TOTAL SOIL-LOSS(INCHES) = 1.57 TOTAL EFFECTIVE RAINFALL (INCHES) = 12,81 --------~-~-~--~~-------------------------------~~---------~------~--------- TOTAL SOIL-LOSS VOLUME (ACRE-FEET) = 444.4048 TOTAL STORM RUNOFF VOLUME(ACRE-FEET) = 3621.9980 -~----~-----~------~-------------~~-----------------------------~~-------~-- F-56 =======~~========~================~~~================~===========~========== 2 4 - H 0 U R S TOR M RON 0 F F H Y 0 R 0 G RAP H ==================~~=~====================~=~~=============~~e~======~=~==== HYDROGRAPH IN FIVE-MINUTE UNIT INTERVALS (CFS) (Note: Time indicated is at END of Each Unit Intervals) -----------------------------~-~~---------------------~------------~-------~ TIME (HRS) VOLOME (AF) Q(CFS) O. 1575.0 3150.0 4725,0 6300,0 --------------------~----~-------------~------------------------~-----~----- 0.083 0.1010 14.66 Q 0.167 0,4617 52.38 Q 0.250 1. 2131 109.10 Q 0.333 2.4881 185.13 VQ 0.417 4.5879 304.90 VQ 0.500 8.2926 537.93 V Q 0.583 13.4424 747.75 V Q 0.667 19.3247 854.11 V Q 0.750 25.7115 927 . 36 V Q 0.833 32.5201 988.61 V Q 0,917 39.6759 1039.02 V Q 1. 000 47.1239 1081.44 V Q 1. 083 54.8280 1118.64 V Q 1.167 62,7585 1151.51 V Q 1. 250 70.8797 1179.20 V Q 1. 333 79.1660 1203.17 V Q 1.417 87.6051 1225,36 V Q 1. 500 96.1778 1244.76 ,v Q 1. 583 104.8701 1262.12 .V Q 1.667 113.6606 1276.37 .V Q 1. 750 122,5431 1289.75 .V Q 1. 833 131. 4929 1299.51 ,v Q 1.917 140.5065 1308.77 .V Q 2,000 149.5841 1318.07 ,v Q 2.083 158.7092 1324.96 .V Q 2. Hi7 167,8570 1328.26 .V Q 2.250 177.0274 1331.54 .V Q 2.333 186.2205 1334.84 V Q 2,417 195,4365 1338.16 V Q 2,500 204.6754 1341.49 V Q 2,583 213.9374 1344.85 V Q 2.667 223.2227 1348.22 V Q 2,750 732 _ 5313 1351.60 V Q 2.833 241.8633 1355,02 V Q 2.917 251. 2190 1358.44 V Q 3,000 260.5984 1361,89 V Q 3,083 270,0016 1365.35 V Q 3,167 279.4289 1368.84 V Q 3.250 288.8803 1372.34 V Q 3,333 298,3560 1375.87 V Q 3,417 307.8560 1379,41 V Q 3.500 317.3807 1382.98 V Q 3.583 326.9301 1386.57 V Q 3,667 336.5043 1390.18 V Q 3.750 346,1035 1393,81 V Q F-57 3.833 355.7280 1397.46 v Q . F-58 TIME(HRS) VOLUME (AF) 3.917 4.000 4.083 4.167 4,250 4.333 4.417 4.500 4.583 4.667 4.750 4.833 4,917 5,000 5.083 5.167 5.250 5.333 5.417 5.500 5,583 5.667 5,750 5,833 5.917 6.000 6,083 6.167 6.250 6.333 6.417 6.500 6.583 6.667 6.750 6.833 6.917 7.000 7.083 7.167 7.250 7,333 7.417 7.500 7.583 7.667 7.750 7,833 7,917 8.000 365.3777 375,0476 384,7351 394,4405 404,1638 413.9052 423.6649 433.4429 443.2395 453.0549 462.8892 472.7425 482.6151 492.5070 502.4186 512.3500 522.3013 532.2728 542.2645 552,2769 562.3099 572.3638 582.4389 592,5353 602.6533 612.7930 622.9547 633.1385 643.3448 653.5739 663.8257 674.1007 684,3990 694.7211 705.0669 715.4369 725.8312 736.2502 746.6941 757,1632 767.6578 778,1782 788.7245 799.2974 809.8969 820.5234 831.1772 841,8586 852.5680 863.3057 Q (CFS) O. 1401.13 1404.08 1406.63 1409.22 1411.82 1414.46 1417 .10 1419.78 1422.47 1425.19 1427,93 1430.71 1433.49 1436.32 1439.16 1442.04 1444.93 1447.86 1450.81 1453.79 1456.79 1459.84 1462.90 1466,00 1469.12 1472,29 1475.47 1478.71 1481.95 1485.25 1488.56 1491. 93 1495.32 1498.75 1502.21 1505.72 1509.26 1512.84 1516.45 1520.12 1523,81 1527.56 1531.34 1535.18 1539,04 1542,97 1546,93 1550.95 1555,00 1559.12 1575.0 v Q V Q V Q V Q V Q V Q V Q V Q. V Q. V Q. V Q. V Q. V Q, V Q. V Q. V Q. V Q. V Q. V Q. V Q. V Q. V Q. V Q. V Q. V Q, V Q, V Q. V Q. V Q. V Q. V Q. V Q. V Q. V Q. V Q, V Q. VQ. VQ, VQ. VO. VQ. VQ. VQ, VQ. VQ, Q. Q. Q. Q. Q. F-59 3150,0 4725.0 6300.0 ------------~~~------------------------------------------------------------- TIME (HRS) VOLUME (AF) Q(CFS) 0, 1575.0 3150.0 4725.0 6300,0 ----~-~------------------------------------------------------------~~------- 8.083 874.0721 1563.27 Q. 8.167 884.8675 1567.50 Q. 8.250 895.6923 1571.75 Q. 8.333 906.5469 1576.09 Q 8,417 917.4315 1580.45 Q 8,500 928.3468 1584.90 Q 8.583 939.2930 1589.38 Q 8.667 950.2706 1593.95 Q 8.750 961. 2798 1598.55 Q 8.833 972.3214 1603.24 Q 8.917 983.3955 1607.96 Q 9.000 994,5028 1612.78 Q 9.083 1005.6436 1617.63 QV 9.167 1016,8184 1622.59 QV 9,250 1028.0277 1627 . 58 QV 9.333 1039.2721 1632,68 QV 9.417 1050.5519 1637.82 QV 9.500 1061.8678 1643.07 QV 9.583 1073.2202 1648.37 QV 9.667 1084.6099 1653.78 QV 9.750 1096.0371 1659.24 Q V 9,833 1107.5028 1664.82 Q V 9.917 1119.0073 1670.45 Q V 10,000 1130.5515 1676.21 Q V 10.083 1142.1357 1682.02 Q V 10.167 1153.7609 1687.97 Q V 10.250 1165.4274 1693.97 Q V 10.333 1177.1361 1700.11 Q V 10.417 1188.8877 1706.32 Q V 10.500 1200.6830 1712.68 Q V 10,583 1212.5226 1719.10 Q V 10.667 1224.4075 1725.68 Q V 10.750 1236.3381 1732.34 Q V 10.833 1248.3158 1739.16 ,Q V 10.917 1260.3411 1746.06 ,Q V 11. 000 1272.4150 1753.13 .Q V 11. 083 1284.5383 1760.30 .Q V 11.167 1296.7122 1767.65 .Q V 11. 250 1308.9374 1775.09 ,Q V 11. 333 1321.2151 1782,73 ,Q V 11.417 1333.5463 1790.48 .Q V 11,500 1345.9321 1798.43 .Q V 11.583 1358.3737 1806.51 .Q V 11. 667 1370.8723 1814.80 .Q V 11.750 1383.4290 1823.22 .Q V 11 . 833 1396.0452 1831.88 .Q V 11,917 1408.7220 1840.68 .Q V 12.000 1421.4613 1849.74 ,Q V 12.083 1434.2534 1857.42 ,Q V 12,167 1447,0839 1862.97 .Q V F-60 ~-----------------------------~--~~--------------~---~-~---~---------------- TIME (HRS) VOLUME (AF) Q(CFS) O. 1575,0 3150.0 4725,0 6300,0 -----~-----------------~~~--~------------~-~~------------------------------~ 12.250 1459.9403 1866.76 .Q V 12,333 1472.8114 1868.87 .Q V 12,417 1485.6675 1866.70 .Q V 12,500 1498.4302 1853.14 .Q V 12.583 1511.1191 1842.44 .Q V 12.667 1523.8131 1843.16 ,Q V 12.750 1536,5383 1847.70 .Q V 12,833 1549.3070 1854.00 ,Q V 12,917 1562.1293 1861.79 .Q V 13.000 1575,0145 1870.94 .Q V 13.083 1587.9691 1881.00 .Q V 13.167 1601. 0000 1892.09 Q V 13.250 1614 ,1138 1904.12 Q V. 13.333 1627,3174 1917,16 Q V 13.417 1640.6151 1930.84 Q V 13.500 1654.0138 1945.49 Q V 13.583 1667.5184 1960.87 Q V 13,667 1681.1365 1977.33 Q V 13,750 1694.8724 1994.47 Q V . 13.833 1708.7350 2012.85 Q V 13.917 1722.7291 2031. 94 Q V. 14.000 1736.8615 2052.02 Q V. 14.083 1751.1622 2076,47 Q V, 14.167 1765.6779 2107.67 Q V. 14.250 1780.4435 2143.96 Q V. 14,333 1795,4967 2185.73 Q V. 14.417 1810.9114 2238.21 Q V. 14.500 1826.8729 2317.61 Q V 14.583 1843.3462 2391.91 Q V 14.667 1860.1715 2443.04 Q V 14.750 1877.3024 2487.39 Q V 14,833 1894.7300 2530.50 Q V 14 .917 1912.4465 2572.44 Q ,v 15.000 1930.4531 2614.56 Q ,v 15.083 1948.7542 2657.31 Q .V 15,167 1967.3610 2701,71 Q .V 15.250 1986,2826 2747,42 Q ,V 15.333 2005.5376 2795.83 Q V 15.417 2025.0532 2833.68 Q V 15,500 2044.7137 2854,71 Q V 15.583 2064,4402 2864.29 Q V 15,667 2084.1731 2865,22 Q V 15.750 2103.6985 2835.10 Q V 15.833 2122.3884 2713.77 Q V 15.917 2140.6101 2645.79 Q V 16.000 2159.4392 2733.97 Q V 16.083 2180.4004 3043.57 Q. V 16.167 2204.1855 3453.61 .Q V 16,250 2230.7236 3853.33 Q 16.333 2260,6348 4343,09 V Q F-61 -----------~-~-------~~-------------------~~-------------------------------- TIME(HRS) VOLUME (AF) Q (CFSl O. 1575.0 3150.0 4725.0 6300.0 ------~~--------------------------~-~-----------------------~--------------- 16.417 2295.7537 5099.27 V Q 16.500 2339.0620 6288.36 V Q, 16.583 2378.9861 5796.97 V Q 16.667 2409.6760 4456.17 V Q Hi. 750 2436.7678 3933. 72 Q V 16.833 2462.8674 3789.66 Q V 16.917 2488.2322 3682.97 Q V 17.000 2512.6257 3541,94 Q V 17 .083 2536.1355 3413.63 .Q V 17 .167 2558.8064 3291. 80 Q V 17.250 2580.5627 3159.03 Q V 17 .333 2601. 4966 3039.58 Q. V 17.417 2621.7056 2934.36 Q V 17 .500 2640.9639 2796.30 Q V. 17.583 2659.3518 2669,94 Q V, 17.667 2676.9592 2556,59 Q V. 17.750 2694.0112 2475.95 Q V. 17 . 833 2710.3677 2374,97 Q V. 17.917 2726.2913 2312.12 Q V 18.000 2741. 8079 2253.00 Q V 18.083 2756.7715 2172.72 Q V 18.167 2771.1555 2088.57 Q V 18.250 2785.2839 2051. 45 Q V 18.333 2799,2148 2022.78 Q V 18.417 2812.9941 2000.76 Q .V 18.500 2826.7029 1990.52 Q .V 18,583 2840.3452 1980.85 Q .V 18.667 2853.8638 1962.90 Q .V 18.750 2867,2480 1943.39 Q ,v 18.833 2880.5042 1924.79 Q ,v 18.917 2893.6338 1906.43 Q ,v 19.000 2906,6384 1888,29 ,Q V 19.083 2919,5249 1871. 12 .Q V 19.167 2932.3018 1855.20 .Q V 19.250 2944.9707 1839.55 .Q V 19.333 2957.5388 1824.90 .Q V 19.417 2970.0117 1811. 06 .Q V 19.500 2982.3906 1797.40 .Q V 19.583 2994.6768 1783.95 .Q V 19.667 3006.8708 1770.59 .Q V 19.750 3018,9741 1757.39 .Q V 19.833 3030,9812 1743.44 .Q V 19.917 3042.8860 1728.58 Q V 20.000 3054,6384 1706,47 Q V 20.083 3066.2725 1689.25 Q V 20,167 3077.8218 1676,97 Q V 20.250 3089,2925 1665.55 Q V 20,333 3100,6841 1654.07 Q V 20,417 3111.9973 1642.69 Q V 20,500 3123,2351 1631. 72 Q V F-62 -~------------------------~~-----~~--~-------~----~~--~--~--~--------------~ TIME (HRS) VOLUME (AF) Q(CFS) O. 1575.0 3150,0 4725.0 6300.0 ------~--------------------------------------------------------------------- 20.583 3134,3999 1621.12 Q V 20.667 3145.4939 1610.85 Q V 20.750 3156.5193 1600.89 Q V 20,833 3167.4780 1591.22 Q V 20.917 3178.3721 1581. 82 Q V 21.000 3189.2043 1572.85 Q, V 21.083 3199.9773 1564.23 Q. V 21. 167 3210,6924 1555.84 Q. V 21. 250 3221.3513 1547.67 Q. V 21.333 3231,9553 1539.71 Q. V 21.417 3242.5061 1531. 96 Q. V 21. 500 3253,0046 1524.40 Q. V 21. 583 3263,4524 1517,03 Q. V 21.667 3273,8506 1509,83 Q. V 21. 750 3284.2004 1502.79 Q, V 21.833 3294.5029 1495.92 Q. V 21.917 3304,7590 1489.20 Q. V 22.000 3314.9695 1482.55 Q. V 22.083 3325.1348 1475.99 Q. V 22.167 3335.2559 1469.58 Q. V 22.250 3345.3335 14 63.29 Q. V 22.333 3355.3689 1457.13 Q. V 22.417 3365.3625 1451.08 Q. V 22.500 3375.3154 1445.15 Q. V 22.583 3385,2283 1439.33 Q. V 22.667 3395.1018 1433.63 Q. V 22.750 3404.9368 1428.03 Q. V 22.833 3414.7336 1422.52 Q, V 22.917 3424.4934 1417 .12 Q V 23.000 3434.2166 1411. 80 Q V 23.083 3443,9038 1406.59 Q V 23.167 3453,5557 1401.46 Q V 23.250 3463.1729 1396.42 Q V 23.333 3472.7559 1391.46 Q V 23.417 3482.3054 1386.58 Q V 23.500 3491. 8218 1381.79 Q V 23.583 3501.3057 1377 .07 Q V 23 . 667 3510.7576 1372.42 Q V 23.750 3520.1780 1367.85 Q V 23,833 3529,5674 1363,35 Q V 23.917 3538,9263 1358.92 Q V, 24.000 3548.2551 1354.55 Q V. 24.083 3557.4534 1335.60 Q V, 24.167 3566.3633 1293.73 Q V, 24.250 3574.8557 1233.10 Q V, 24.333 3582.7998 1153.47 Q V, 24,417 3589.8970 1030.52 Q V. 24.500 3595.3721 794.97 Q V. 24.583 3599.3914 583.62 Q V. 24.667 3602.6738 476.60 Q v. F-63 TIME (HRS) VOLUME (AF} Q{CFS) O. 1575.0 3150,0 4725.0 6300.0 ------------------~------~~~-~~~~~~--~~~~--------~---~---------------------- 24,750 3605.4504 403.17 Q V, 24.833 3607.8064 342.08 Q V. 24.917 3609.8181 292.09 .Q V. 25,000 3611.5422 250,34 .Q V, 25.083 3613.0159 213.99 ,Q V, 25.167 3614.2703 182.15 .Q V. 25.250 3615.3423 155.64 Q V. 25.333 3616.2583 132.99 Q V, 25.417 3617.0312 112,22 Q V. 25.500 3617.6812 94.35 Q V. 25,583 3618.2224 78.61 Q V. 25.667 3618.6775 66.07 Q V. 25,750 3619.0525 54,45 Q V. 25.833 3619.3730 46.53 Q V, 25.917 3619.6428 39,16 Q V. 26.000 3619.8618 31. 81 Q V. 26.083 3620.0471 26,89 Q V. 26.167 3620.2236 25,61 Q V. 26.250 3620.3914 24,37 Q V. 26.333 3620.5508 23,13 Q V. 26.417 3620.7017 21.90 Q V, 26,500 3620.8440 20.67 Q V. 26,583 3620.9780 19.45 Q V. 26.667 3621.1035 18.23 Q V. 26.750 3621.2207 17.01 Q V. 26.833 3621.3296 15,80 Q V. 26.917 3621. 4302 14.59 Q V, 27.000 3621.5225 13,39 Q V, 27,083 3621.6064 12,19 Q V, 27 . 167 3621.6821 11. 00 Q V. 27,250 3621.7498 9.80 Q V, 27.333 3621. 8091 8.62 Q V, 27,417 3621,8604 7.43 Q V. 27 .500 3621. 9033 6.25 Q V. 27.583 3621.9382 5.07 Q V. 27,667 3621.9651 3.90 Q V, 27,750 3621.9839 2.73 Q V. 27.833 3621. 9946 1. 56 Q V. 27.917 3621,9973 0.40 Q v+ ============~~=~===~=====================~===~===~~====:~~================~~~ END OF FLOODSCx ROUTING ANALYSIS F-64 F..65 **************************************************************************** F L 0 0 D R 0 UTI N G A N A L Y S I S USING COUNTY HYDROLOGY MANUAL OF SAN BERNARDINO(1986) (c) Copyright 1989-2002 Advanced Engineering Software (aes) Ver. 8,0 Release Date: 01/01/2002 License 10 1542 Analysis prepared by: TRANSTECH ENGINEERS, INC. 624 Brea Canyon Road Walnut, CA 91789 ************************** DESCRIPTION OF STUDY ************************** * WATERMAN CANYON * DEVELOPED CONDITION * * * * ************************************************************************** FILE NAME: AS-2.DAT TIME/DATE OF STUDY: 12:03 03/0412005 F-66 *********************************k****************************************** FLOW PROCESS FROM NODE 1. 00 TO NODE 2.00 IS CODE = 1 --~------------------~~-~--~--------------~~----~------------------------~~- >>>>>SUBAREA RUNOFF (UNIT-HYDROGRAPH ANALYSIS) <<<<< ---------------~-----------------~~--~--~----------------------------------- ---------------~~-~--------------~---~--~.----------------------------------- (UNIT-HYDROGRAPH ADDED TO STREAM #1) WATERSHED AREA = 3394.000 ACRES BASEFLOW = 0.000 CFS!SQUARE-MILE *USER ENTERED "LAG" TIME = 0.490 HOURS CAUTION: LAG TIME IS LESS THAN 0.50 HOURS. THE 5-MINUTE PERIOD UH MODEL (USED IN THIS COMPUTER PROGRAM) MAY BE TOO LARGE FOR PEAK FLOW ESTIMATES, FOOTHILL S-GRAPH SELECTED MAXIMUM WATERSHED LOSS RATE(INCH!HOUR} 0.138 LOW LOSS FRACTION = 0.115 *HYDROGRAPH MODEL *1 SPECIFIED* SPECIFIED PEAK SPECIFIED PEAK SPECIFIED PEAK SPECIFIED PEAK SPECIFIED PEAK SPECIFIED PEAK 5-MINUTES RAINFALL(INCH)= 0.58 3D-MINUTES RAINFALL{INCH)= 1.25 1-HOUR RAINFALL(INCH) 1. 74 3-HOUR RAINFALL (INCH) 3,40 6-HOUR RAINFALL(INCH) 5.36 24-HOUR RAINFALL(INCH) 14,50 *USER SPECIFIED PRECIPITATION DEPTH-AREA REDUCTION FACTORS: 5-MINUTE FACTOR = 0.825 30-MINUTE FACTOR = 0.825 I-HOUR FACTOR 0,825 3-HOUR FACTOR 0,975 6-HOUR FACTOR 0,985 24-HOOR FACTOR 0.992 UNIT HYDROGRAPH TIME UNIT 5.000 MINUTES UNIT INTERVAL PERCENTAGE OF LAG-TIME = 17.007 ===~~~~===========~=~====================~=~=~~====-=~====================== UNIT HYDROGRAPH DETERMINATION ------~~----------~--------------------------~---~-----~~------------------- INTERVAL NUMBER "S" GRAPH MEAN VALUES UNIT HYDROGRAPH ORDINATES (CFS) -------------~--------------------------~-~--------------------~--~-~------- 1 2 3 4 5 6 7 8 1.112 3.972 8.270 14.027 23.093 40.739 56,602 64.590 456,415 1174.010 1764.123 2362.960 3721,370 7243.110 6511.134 3278.796 F-67 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 70.054 74.597 78.312 81.413 84.114 86.481 88.450 90.133 91.679 93.009 94.182 95.115 95.981 96.569 97.118 97.667 98.032 98.122 98.210 98.298 98.387 98.474 98.562 98.650 98.738 98.826 98.914 99.002 99.090 99.178 99.266 99.354 99,442 99,530 99.618 99.706 99.794 99.882 99.970 100.000 F-68 2242.409 1864,988 1524.745 1272.823 1108.722 971,371 808.551 690.703 634.514 545.824 481.546 383,101 355,334 24 L 444 225.182 225.232 149.899 37.194 36.157 36.060 36.251 35.919 36.201 36.016 36.107 36.110 36.107 36.110 36.107 36.107 36.107 36.107 36.107 36.107 36.107 36.107 36.107 36,107 36.107 12.470 **************************************************************************** UNIT PERIOD (NUMBER) UNIT RAINFALL (INCHES) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 0.0361 0.0362 0.0362 0.0363 0.0363 0.0364 0.0364 0.0365 0.0366 0,0366 0.0367 0.0367 0.0368 0.0368 0.0369 0.0369 0.0370 0.0370 0,0371 0.0372 0.0372 0.0373 0.0374 0.0374 0.0375 0.0375 0.0376 0.0377 0.0377 0.0378 0.0379 0,0379 0.0380 0.0380 0.0381 0,0382 0.0383 0.0383 0.0384 0.0385 0.0385 0,0386 0.0387 0.0387 0.0388 0.0389 0.0390 0.0390 0.0391 0.0392 0,0393 UNIT SOIL-LOSS (INCHES) EFFECTIVE RAINFALL (INCHES) 0,0042 0,0042 0.0042 0.0042 0.0042 0.0042 0.0042 0.0042 0.0042 0.0042 0.0042 0.0042 0.0042 0.0042 0,0042 0.0042 0.0043 0.0043 0,0043 0.0043 0.0043 0.0043 0.0043 0.0043 0.0043 0.0043 0.0043 0.0043 0,0043 0,0043 0,0044 0,0044 0.0044 0.0044 0.0044 0.0044 0.0044 0,0044 0,0044 0,0044 0,0044 0,0044 0,0044 0,0045 0.0045 0.0045 0.0045 0,0045 0,0045 0,0045 0.0045 0.0320 0.0320 0.0321 0.0321 0.0322 0.0322 0.0323 0.0323 0.0324 0.0324 0.0325 0.0325 0.0325 0.0326 0.0327 0.0327 0.0328 0.0328 0.0329 0.0329 0.0330 0.0330 0.0331 0.0331 0.0332 0,0332 0,0333 0.0333 0,0334 0.0334 0.0335 0.0336 0.0336 0,0337 0,0337 0.0338 0.0339 0.0339 0.0340 0,0340 0.0341 0.0342 0.0342 0.0343 0.0344 0.0344 0.0345 0.0345 0,0346 0.0347 0.0348 F-69 52 0.0393 0.0045 0.0348 53 0.0394 0.0045 0.0349 54 0,0395 0.0045 0.0349 55 0.0396 0.0046 0.0350 56 0,0396 0.0046 0.0351 57 0.0398 0,0046 0.0352 58 0.0398 0,0046 0.0352 59 0.0399 0,0046 0.0353 60 0.0400 0.0046 0.0354 61 0.0401 0.0046 0.0355 62 0.0401 0.0046 0,0355 63 0.0403 0.0046 0.0356 64 0.0403 0.0046 0,0357 65 0.0404 0,0046 0.0358 66 0,0405 0.0047 0.0358 67 0.0406 0.0047 0.0359 68 0.0407 0.0047 0,0360 69 0.0408 0.0047 0,0361 70 0.0408 0.0047 0.0362 71 0.0410 0.0047 0.0363 72 0.0410 0.0047 0.0363 73 0.0412 0.0047 0.0364 74 0.0412 0.0047 0.0365 75 0.0414 0.0048 0.0366 76 0.0414 0.0048 0.0367 77 0,0416 0.0048 0.0368 78 0.0416 0.0048 0.0368 79 0,0418 0.0048 0.0370 80 0;0418 0.0048 0.0370 81 0.0420 0.0048 0.0371 82 0.0420 0.0048 0.0372 83 0.0422 0.0048 0.0373 84 0.0422 0.0049 0.0374 85 0.0424 0.0049 0.0375 86 0.0425 0.0049 0.0376 87 0.0426 0,0049 0.0377 88 0.0427 0.0049 0.0378 89 0.0428 0.0049 0.0379 90 0.0429 0.0049 0.0380 91 0.0431 0.0050 0.0381 92 0.0431 0.0050 0.0382 93 0.0433 0.0050 0.0383 94 0.0434 0.0050 0.0384 95 0.0435 0.0050 0.0385 96 0.0436 0,0050 0.0386 97 0.0438 0.0050 0.0388 98 0.0439 0.0050 0.0388 99 0.0441 0.0051 0.0390 100 0.0441 0,0051 0.0391 101 0.0443 0.0051 0.0392 102 0,0444 0.0051 0.0393 103 0.0446 0.0051 0.0395 104 0.0447 0.0051 0.0395 105 0.0449 0.0052 0.0397 106 0.0450 0.0052 0.0398 107 0.0452 0,0052 0.0400 108 0.0453 0.0052 0,0400 F-70 109 0,0455 0.0052 0,0402 110 0.0456 0.0052 0.0403 111 0.0458 0.0053 0,0405 112 0,0459 0,0053 0,0406 113 0.0461 0.0053 0,0408 114 0.0462 0.0053 0,0409 115 0.0464 0.0053 0,0411 116 0.0465 0.0053 0.0412 117 0.0467 0.0054 0.0414 118 o . 04 68 0.0054 0,0415 119 0.0471 0.0054 0.0417 120 0.0472 0.0054 0.0418 121 0,0474 0.0055 0.0420 122 0.0476 0.0055 0.0421 123 0,0478 0.0055 0.0423 124 0.0479 0.0055 0.0424 125 0,0482 0.0055 0.0427 126 0.0483 0.0056 0.0428 127 0.0486 0.0056 0.0430 128 0.0487 0.0056 0.0431 129 0.0490 0.0056 0,0434 130 0,0492 0.0057 0.0435 131 0.0495 0,0057 0.0438 132 0.0496 0,0057 0.0439 133 0.0499 0.0057 0.0442 134 0.0501 0.0058 0.0443 135 0.0504 0.0058 0.0446 136 0.0505 0,0058 0,0447 137 0.0509 0.0059 0.0450 138 0.0511 0.0059 0.0452 139 0.0514 0.0059 0.0455 140 0.0516 0,0059 0.0456 141 0.0519 0,0060 0.0460 142 0.0521 0.0060 0.0461 143 0,0525 0.0060 0.0465 144 0.0527 0.0061 0.0467 145 0.0493 0.0057 0,0437 146 0,0496 0.0057 0.0439 147 0,0500 0.0058 0.0443 148 0.0503 0.0058 0.0445 149 0,0508 0,0058 0.0449 150 0,0510 0.0059 0.0452 151 0,0516 0.0059 0.0456 152 0.0519 0.0060 0.0459 153 0.0524 0.0060 0.0464 154 0.0527 0.0061 0.0466 155 0.0533 0.0061 0.0472 156 0.0536 0.0062 0.0475 157 0.0543 0,0062 0.0480 158 0.0546 0.0063 0.0483 159 0,0553 0,0064 0,0490 160 0.0557 0,0064 0.0493 161 0,0564 0.0065 0.0500 162 0,0568 0.0065 0.0503 163 0,0577 0.0066 0.0510 164 0,0581 0.0067 0.0514 165 0.0590 0.0068 0.0522 F-71 166 0.0595 0.0068 0.0526 167 0,0605 0,0070 0,0535 168 0.0610 0.0070 0.0540 169 0.0704 0.0081 0.0623 170 0,0709 0.0081 0.0627 171 0.0719 0,0083 0.0636 172 0.0724 0,0083 0,0641 173 0.0736 0.0085 0.0651 174 0.0742 0,0085 0.0656 175 0.0755 0.0087 0,0668 176 0.0762 0.0088 0,0674 177 0.0777 0.0089 0.0687 178 0.0785 0.0090 0,0694 179 0,0802 0.0092 0.0710 180 0.0812 0.0093 0.0718 181 0,0833 0.0096 0.0737 182 0.0845 0.0097 0.0748 183 0.0871 0.0100 0,0771 184 0,0886 0.0102 0,0784 185 0.0584 0.0067 0.0516 186 0.0613 0.0070 0,0542 187 0.0684 0.0079 0.0605 188 0.0731 0.0084 0,0647 189 0.0775 0.0089 0.0686 190 0.0870 0.0100 0.0770 191 0.1221 0.0115 0.1106 192 0.1656 0.0115 0,1541 193 0.4785 0.0115 o . 4 670 194 0.1005 0.0115 0.0890 195 0,0787 0.0090 0.0696 196 0.0645 0.0074 0.0571 197 0.0903 0.0104 0.0799 198 0.0857 0.0099 0.0759 199 0.0822 0.0095 0,0728 200 0.0793 0.0091 0,0702 201 0.0769 0.0088 0.0680 202 0.0748 0.0086 0,0662 203 0.0730 0,0084 0.0646 204 0.0714 0.0082 0.0632 205 0,0615 0,0071 0.0545 206 0,0600 0.0069 0.0531 207 0,0585 0.0067 0,0518 208 0,0572 0,0066 0,0507 209 0,0561 0.0064 0.0496 210 0,0550 0,0063 0.0486 211 0,0540 0.0062 0.0477 212 0.0530 0,0061 0,0469 213 0.0521 0.0060 0.0461 214 0.0513 0.0059 0,0454 215 0,0505 0.0058 0.0447 216 0.0498 0,0057 0.0441 217 0,0529 0.0061 0,0468 218 0,0523 0,0060 0,0463 219 0,0518 0,0060 0.0458 220 0,0512 0.0059 0.0453 221 0,0507 0.0058 0.0449 222 0.0502 0.0058 0.0445 F-72 223 0.0498 0.0057 0,0440 224 0.0493 0,0057 0.0436 225 0.0489 0.0056 0.0433 226 0.0485 0.0056 0.0429 227 0.0481 0.0055 0,0425 228 0.0477 0.0055 0,0422 229 0.0473 0.0054 0.0419 230 0.0470 0.0054 0,0416 231 0.0466 0.0054 0.0413 232 0.0463 0.0053 0.0410 233 0.0460 0.0053 0.0407 234 0.0457 0.0053 0.0404 235 0,0454 0.0052 0,0401 236 0.0451 0.0052 0,0399 237 0.0448 0.0051 0,0396 238 0,0445 0.0051 0,0394 239 0.0442 0.0051 0.0391 240 0.0440 0.0051 0.0389 241 0.0437 0.0050 0.0387 242 0.0435 0.0050 0.0385 243 0,0432 0.0050 0.0383 244 0,0430 0.0049 0.0380 245 0,0428 0.0049 0.0378 246 0.0425 0.0049 0.0376 247 0.0423 0.0049 0,0374 248 0.0421 0.0048 0.0373 249 0.0419 0.0048 0.0371 250 0.0417 0.0048 0.0369 251 0.0415 0.0048 0.0367 252 0.0413 0,0047 0.0365 253 0.0411 0.0047 0.0364 254 0,0409 0.0047 0.0362 255 0.0407 0,0047 0.0360 256 0.0405 0,0047 0.0359 257 0,0404 0,0046 0.0357 258 0.0402 0,0046 0.0356 259 0,0400 0.0046 0.0354 260 0,0399 0.0046 0.0353 261 0.0397 0.0046 0.0351 262 0.0395 0.0045 0.0350 263 0.0394 0.0045 0.0349 264 0.0392 0.0045 0.0347 265 0,0391 0.0045 0,0346 266 0.0389 0,0045 0.0345 267 0.0388 0.0045 0.0343 268 0.0386 0,0044 0.0342 269 0.0385 0,0044 0.0341 270 0,0384 0,0044 0.0339 271 0.0382 0.0044 0.0338 272 0.0381 0.0044 0.0337 273 0.0380 0.0044 0.0336 274 0.0378 0.0044 0.0335 275 0.0377 0.0043 0.0334 276 0.0376 0.0043 0.0333 277 0.0374 0.0043 0.0331 278 0,0373 0.0043 0.0330 279 0.0372 0,0043 0.0329 F-73 280 281 282 283 284 285 286 287 288 0.0371 0.0370 0,0369 0.0367 0.0366 0.0365 0.0364 0,0363 0,0362 0.0043 0.0043 0.0042 0.0042 0.0042 0.0042 0.0042 0.0042 0,0042 TOTAL STORM RAINFALL (INCHES) 14.38 TOTAL SOIL-LOSS (INCHES) = 1.60 TOTAL EFFECTIVE RAINFALL (INCHES) = 12.78 TOTAL SOIL-LOSS VOLUME (ACRE-FEET) = 452.6700 TOTAL STORM RUNOFF VOLUME(ACRE-FEET) = 3613,7358 F-74 0.0328 0.0327 0.0326 0,0325 0".0324 0.0323 0.0322 0.0321 0.0320 ------~-~-------------------~~~~---~-~-~--~-----------------~----~---~~~~~~- ----_.......-------------~~----~~~~~~-~~~~~- - - ---- ----"-----------~ ---~------------- 2 4 - H 0 U R S TOR M RUN 0 F F H Y D R 0 G RAP H ========~~===~======================~~====================================== HYDROGRAPH IN FIVE-MINUTE UNIT INTERVALS (CFS) (Note: Time indicated is at END of Each Unit Intervals) TIME{HRS) VOLUME (AF) Q(CFS) O. 1625.0 3250.0 4875.0 6500,0 ------------~~-------------------~---~-~------------------------------------ 0.083 0.1005 14.59 Q 0.167 0,4596 52.14 Q 0.250 1. 2076 108.61 Q 0,333 2,4769 184.30 vQ 0.417 4,5673 303.53 VQ 0.500 8,2553 535.51 V Q 0.583 13.3819 744.38 V Q 0.667 19.2378 850,27 V Q 0.750 25.5958 923.19 V Q 0.833 32,3738 984,17 V Q 0.917 39.4974 1034.35 V Q 1. 000 46.9118 1076.57 V Q 1. 083 54.5813 1113.61 V Q 1. 167 62.4761 1146.33 V Q 1.250 70.5608 1173.89 V Q 1. 333 78.8098 1197.75 V Q 1.417 87.2109 1219.85 V Q 1.500 95.7451 1239.16 .V Q 1.583 104.3983 1256.44 .V Q 1. 667 113.1492 1270.63 .V Q 1.750 121.9918 1283.95 .V Q 1. 833 130.9013 1293.66 .V Q 1.917 139.8743 1302.88 .V Q 2.000 148.9111 1312.14 .V Q 2.083 157.9951 1319.00 .V Q 2.167 167.1018 1322.29 .V Q 2.250 176.2309 1325.55 .V Q 2.333 185.3827 1328.84 V Q 2.417 194.5572 1332.14 V Q 2.500 203.7545 1335.46 V Q 2.583 212.9749 1338.79 V Q 2.667 222.2184 1342.15 V Q 2.750 231,4850 1345.52 V Q . 2.833 240.7751 1348.92 V Q 2.917 250.0886 1352.33 V Q 3.000 259.4258 1355.76 V Q 3.083 268.7868 1359.21 V Q 3,167 278,1716 1362.68 V Q 3.250 287,5805 1366,16 V Q 3,333 297,0135 1369.68 V Q 3.417 306,4709 1373,20 V Q 3.500 315.9527 1376.76 V Q 3.583 325.4591 1380.33 V Q 3,667 334,9903 1383,93 V Q 3.750 344.5463 1387,53 V Q F-75 3.833 354.1274 1391.18 v Q , F~76 TIME (HRS) VOLUME (AF) Q(CFS) O. 1625.0 3,917 363.7337 1394,83 V Q 4.000 373.3601 1397.76 V Q 4.083 383,0041 1400.30 V Q 4.167 392.6657 1402,88 V Q 4.250 402.3453 1405.47 V Q 4.333 412.0429 1408,09 V Q 4.417 421.7586 1410.72 V Q 4.500 431. 4927 1413.39 V Q 4.583 441.2452 1416.07 V Q 4.667 451.0165 1418.78 V Q 4.750 460,8065 1421. 51 V Q 4.833 470.6155 1424.27 V Q 4.917 480.4436 1427,04 V Q 5.000 490.2911 1429.85 V Q 5.083 500.1580 1432.68 V Q 5.167 510.0447 1435,55 V Q 5.250 519.9512 1438.43 V Q 5.333 529.8779 1441.35 V Q 5.417 539.8247 1444.28 V Q 5.500 549.7920 1447.25 V Q 5.583 559.7798 1450.24 V Q 5.667 569.7886 1453,27 V Q 5.750 579.8183 1456.32 V Q 5,833 589.8693 1459.41 V Q 5.917 599.9417 1462.51 V Q, 6.000 610.0358 1465.66 V Q. 6,083 620.1518 1468,84 V Q. 6.167 630,2899 1472.05 V Q. 6,250 640.4503 1475.28 V Q, 6.333 650.6332 1478.57 V Q, 6.417 660.8389 1481.87 V Q. 6,500 671.0677 1485,22 V Q. 6,583 681.3197 1488.59 V Q. 6,667 691.5953 1492.01 V Q. 6.750 701. 8945 1495,45 V Q. 6,833 712.2179 1498,95 V Q, 6,917 722,5654 1502,46 V Q, 7.000 732.9376 1506,04 VQ, 7.083 743,3345 1509,63 VQ, 7.167 753.7565 1513.28 VQ, 7.250 764.2039 1516,95 VQ. 7.333 774,6769 1520,69 vQ. 7,417 785.1758 1524.45 VQ. 7,500 795.7011 1528.27 vQ, 7.583 806.2529 1532.12 VQ. 7,667 816.8316 1536.03 Q. 7,750 827.4374 1539,97 Q, 7.833 838,0709 1543.97 Q, 7.917 848.7321 1548.00 Q, 8.000 859.4214 1552.10 Q. F-77 3250.0 4875,0 6500.0 --------------------------------------------------------~~-------------~~--- TIME (HRS) VOLUME (AF) Q (CFS) O. 1625.0 3250.0 4875.0 6500.0 ------------------------------------------------~----~-------~~~-----------~ 8.083 870.1393 1556.24 Q. 8.167 880.8862 1560.44 Q. 8.250 891.6623 1564.68 Q. 8.333 902.4680 1569.00 Q. 8.417 913.3037 1573.34 QV 8.500 924.1699 1577 . 77 QV 8.583 935.0668 1582.23 QV 8.667 945.9951 1586,78 QV 8.750 956.9548 1591.36 QV 8.833 967.9467 1596,02 QV 8.917 978.9709 1600,73 QV 9.000 990.0283 1605.52 QV 9.083 1001. 1188 1610.36 Q.V 9.167 1012.2434 1615.29 Q.V 9.250 1023.4022 1620.26 Q.V 9.333 1034,5959 1625.33 QV 9,417 1045.8250 1630.45 QV 9.500 1057.0900 1635.68 QV 9.583 1068.3914 1640.95 QV 9.667 1079.7297 1646,34 QV 9,750 1091.1056 1651,78 Q V 9.833 1102.5197 1657,33 Q V 9.917 1113.9724 1662.94 Q V 10.000 1125.4646 1668.67 Q V 10.083 1136.9967 1674.46 Q V 10,167 1148.5695 1680.37 Q V 10.250 1160.1835 1686.35 Q V 10.333 1171,8396 1692.46 Q V 10,417 1183.5382 1698.65 Q V 10.500 1195.2804 1704.97 Q V 10.583 1207.0667 1711. 37 Q V 10.667 1218.8981 1717.92 Q V 10.750 1230.7751 1724.55 Q V 10.833 1242.6990 1731.33 Q V 10.917 1254.6700 1738.20 Q V 11. 000 1266.6897 1745.25 Q V 11.083 1278.7584 1752.38 Q V 11.167 1290.8776 1759.69 Q V 11.250 1303.0477 1767,11 Q V 11. 333 1315.2703 1774.71 Q V 11.417 1327.5459 1782.42 Q V 11,500 1339,8761 17 90. 34 .Q V 11.583 1352.2616 1798.38 .Q V 11, 667 1364.7040 1806.63 ,Q V 11.750 1377.2041 1815,02 ,Q V 11.833 1389.7635 1823.64 .Q V 11.917 1402.3834 1832.40 .Q V 12.000 1415.0653 1841.41 .Q V 12.083 1427.7999 1849,06 .Q V 12.167 1440.5726 1854,59 .Q V F-78 ------~----------------------------~----~~-~~--~~-~~~~~~~-~--~-~~~--~-~----- TIME (HRS) VOLUME (AF) Q(CFS) O. 1625.0 3250.0 4875.0 6500.0 ---------------------------------~-------~---~~--~--------------------~---~~ 12,250 1453,3712 1858.36 .Q V 12,333 1466.1843 1860.47 .Q V 12, 41 7 1478.9825 1858.30 .Q V 12.500 1491.6877 1844,80 .Q V 12,583 1504.3196 1834.15 .Q V 12.667 1516,9564 1834.86 .Q V 12,750 1529.6244 1839.39 ,Q V 12,833 1542.3356 1845.66 .Q V 12.917 1555.1001 1853.41 .Q V 13.000 1567.9274 1862.52 .Q V 13.083 1580.8236 1872.54 .Q V 13.167 1593.7959 1883.58 .Q V 13.250 1606.8507 1895.55 .Q V 13.333 1619.9949 1908.54 .Q V 13.417 1633.2328 1922.15 ,Q V 13.500 1646.5712 1936.74 .Q V 13.583 1660.0150 1952.04 Q V 13.667 1673,5718 1968.44 Q V 13.750 1687.2460 1985.50 Q V 13.833 1701. 0461 2003.79 Q V 13.917 1714.9773 2022.80 Q V 14.000 1729.0460 2042.78 Q V. 14.083 1743,2825 2067.13 Q V. 14 .167 1757.7328 2098.19 Q V, 14 .250 1772.4319 2134.32 Q V. 14.333 1787.4174 2175.89 Q V. 14.417 1802,7627 2228.14 Q V, 14.500 1818.6523 2307.18 Q V 14.583 1835.0515 2381.15 Q V 14,667 1851.8011 2432.05 Q V 14.750 1868.8549 2476.20 Q V 14.833 1886,2041 2519.11 Q V 14.917 1903.8409 2560.87 Q .V 15.000 1921. 7665 2602.79 Q ,V 15.083 1939.9852 2645.35 Q .V 15. 167 1958.5083 2689.55 Q ,v 15.250 1977.3448 2735.06 Q .V 15,333 1996.5132 2783.25 Q V 15,417 2015.9410 2820.93 Q V 15.500 2035.5131 2841.87 Q V 15.583 2055.1509 2851. 40 Q V 15.667 2074.7949 2852.32 Q V 15.750 2094.2327 2822.35 Q V 15.833 2112.8384 2701.56 Q V 15.917 2130.9861 2635.05 Q V 16.000 2149.7747 2728.11 Q V 16.083 2170.7910 3051.57 Q V 16.167 2194.7502 3478.89 .Q V 16.250 2221. 5796 3895.61 QV 16.333 2251.9746 4413.37 V Q F-79 -----------~~------------------------------------~~-~-~~--------------~----- TIME (HRS) VOLUME (AF) Q(CFS) O. 1625.0 3250.0 4875.0 6500,0 --------~~-------~---~-----------------------~------------------------------ 16.417 2287.8955 5215.72 V Q 16.500 2332,3181 6450.16 V Q. 16.583 2373,0947 5920.76 V Q 16.667 2404.2109 4518.08 VQ 16,750 2431. 5879 3975.15 Q V 16.833 2457.9072 3821. 57 Q V 16.917 2483,4363 3706.81 Q V 17.000 2507.9556 3560.20 .Q V 17.083 2531.5645 3428.00 .Q V 17.167 2554,3101 3302.67 Q V 17.250 2576.1177 3166.48 Q. V 17.333 2597.0869 3044.75 Q V 17.417 2617.3220 2938.14 Q V 17.500 2636.5942 2798.34 Q V. 17 ,583 2654.9866 2670.56 Q V. 17.667 2672.5859 2555.42 Q V. 17.750 2689.6226 2473.73 Q V. 17.833 2705.9517 2370.99 Q V. 17.917 2721.8464 2307.93 Q V 18.000 2737.3301 2248.21 Q V 18.083 2752.2478 2166.07 Q V 18.167 2766.5745 2080.23 Q V 18.250 2780.6465 2043.24 Q V 18.333 2794.5220 2014.70 Q V 18,417 2808.2463 1992.78 Q .V 18.500 2821.9006 1982.59 Q .V 18.583 2835.4885 1972.97 Q .V 18,667 2848.9534 1955.09 Q .V 18.750 2862.2844 1935.67 .Q .V 18.833 2875,4880 1917.16 .Q .V 18.917 2888,5657 1898.87 .Q .V 19.000 2901.5190 1880.82 .Q V 19.083 2914.3547 1863.73 .Q V 19.167 2927.0813 1847.88 .Q V 19,250 2939.7004 1832.29 .Q V 19,333 2952.2192 1817.72 .Q V 19.417 2964.6431 1803,94 .Q V 19,500 2976,9731 1790.34 .Q V 19.583 2989.2112 1776.95 Q V 19.667 3001.3574 1763.65 Q V 19.750 3013.4133 1750.51 Q V 19.833 3025,3730 1736.56 Q V 19,917 3037.2295 1721. 56 Q V 20,000 3048,9307 1699.02 Q V 20.083 3060.5122 168 L 65 Q V 20,167 3072.0095 1669.42 Q V 20,250 3083.4287 1658.06 Q V 20.333 3094.7690 1646.63 Q V 20,417 3106.0315 1635.30 Q V 20.500 3117.2188 1624.38 Q, V F-80 -------------~~--~--------------------------------------~--~---------------- TIME(HRS) VOLUME (AF) Q ( C FS ) O. 1625.0 3250.0 4875.0 6500,0 -----~~-~---~------~-------~-~~~-------------------------~------------~~---- 20.583 3128.3333 1613.83 Q. V 20.667 3139,3774 1603.61 Q, V 20.750 3150.3533 1593.69 Q. V 20.833 3161.2627 1584.06 Q. V 20.917 3172.1077 1574,70 Q. V 21.000 3182.8914 1565.78 Q, V 21. 083 3193.6157 1557.19 Q. V 21. 167 3204.2827 1548,84 Q. V 21. 250 3214.8936 1540.70 Q, V 21. 333 3225.4500 1532,79 Q, V 21.417 3235.9531 1525.07 Q, V 21,500 3246,4045 1517.55 Q, V 21.583 3256.8054 1510.20 Q. V 21. 667 3267.1570 1503,03 Q. V 21. 750 3277,4602 1496,03 Q. V 21. 833 3287.7163 1489,19 Q, V 21.917 3297,9263 1482.50 Q. V 22.000 3308,0908 1475.88 Q, V 22.083 3318.2102 1469.35 Q. V 22.167 3328.2856 1462.96 Q. V 22.250 3338.3181 1456.71 Q V 22.333 3348.3083 1450.57 Q V 22.417 3358.2571 1444,55 Q V 22.500 3368,1650 1438,65 Q V 22.583 3378.0332 1432.86 Q V 22.667 3387.8623 1427.18 Q V 22.750 3397.6528 1421.60 Q V 22.833 3407.4058 1416.12 Q V 22.917 3417.1216 1410.74 Q V 23.000 3426.8010 1405.45 Q V 23.083 3436,4446 1400.26 Q V 23.167 3446.0530 1395.15 Q V 23.250 3455.6270 1390.13 Q V 23.333 3465.1670 1385.20 Q V 23.417 3474.6736 1380.34 Q V 23.500 3484,1472 1375,57 Q V 23.583 3493.5886 1370.88 Q V 23.667 3502.9980 1366.25 Q V 23,750 3512,3762 1361. 7 0 Q V 23,833 3521.7234 1357.22 Q V 23.917 3531.0403 1352.80 Q V. 24.000 3540.3271 1348.45 Q V. 24.083 3549.4841 1329.59 Q V. 24,167 3558.3540 1287.91 Q v. 24.250 3566.8081 1227 . 55 Q V. 24.333 3574.7163 1148.28 Q V. 24.417 3581.7817 1025.88 Q V, 24.500 3587.2322 791. 39 Q V. 24.583 3591.2334 580.99 Q V, 24.667 3594.5010 474.46 Q V. F-81 TIME (HRS) VOLUME (AF) Q(CFS) 0, 1625.0 3250.0 4875.0 6500.0 --------------~~-------------~------~~-~--------------~----------------~---- 24.750 3597.2651 401.36 Q V. 24.833 3599,6104 340.54 Q V. 24.917 3601.6130 290.78 .Q V, 25.000 3603.3293 249.21 .Q v. 25,083 3604.7964 213,02 ,Q V. 25.167 3606.0452 181. 33 ,Q V, 25.250 3607.1123 154.94 Q V. 25.333 3608,0242 132,39 Q V, 25.417 3608.7935 111.71 Q V. 25.500 3609.4404 93.93 Q V. 25.583 3609,9792 78,25 Q v. 25.667 3610.4321 65,77 Q V. 25.750 3610.8054 54.21 Q V, 25.833 3611.1245 46.32 Q V, 25.917 3611.3931 38.98 Q V, 26.000 3611.6111 31. 66 Q V, 26.083 3611.7954 26,77 Q V, 26.167 3611.9709 25.50 Q V. 26.250 3612.1379 24.26 Q V. 26.333 3612.2966 23,03 Q V. 26.417 3612.4468 21. 80 Q V. 26.500 3612.5886 20.58 Q V. 26,583 3612.7219 19,36 Q V, 26.667 3612.8469 18.15 Q V. 26.750 3612.9636 16,94 Q V. 26.833 3613.0720 15,73 Q V. 26.917 3613.1721 14,53 Q V. 27.000 3613.2639 13.33 Q v, 27.083 3613,3474 12.14 Q V, 27.167 3613.4229 10.95 Q V. 27.250 3613.4900 9.76 Q V. 27.333 3613,5491 8.58 Q V, 27,417 3613.6001 7.40 Q V, 27,500 3613.6431 6.22 Q V. 27.583 3613.6777 5.05 Q v. 27.667 3613.7046 3.88 Q V, 27.750 3613.7234 2.72 Q V, 27 .833 3613.7341 1.56 Q V. 27.917 3613.7368 0.40 Q V ===========~~=======================~===============~===:=================== END OF FLOODSCx ROUTING ANALYSIS F-82 F-83 **************************************************************************** F L 0 0 0 USING COUNTY (c) Copyright Ver. 8.0 R 0 UTI N G A N A L Y S I S HYDROLOGY MANUAL OF SAN BERNARDINO (1986) 1989-2002 Advanced Engineering Software (aes) Release Date: 01/01/2002 License ID 1S42 Analysis prepared by: TRANSTECH ENGINEERS, INC. 624 Brea Canyon Road Walnut, CA 91789 * EAST TWIN CREEK * UNDEVELOPED CONDITION ************************** DESCRIPTION OF STUDY ************************** * * * ************************************************************************** * FILE NAME: AS-3.DAT TIME/DATE OF STUDY: 12:04 03/04/2005 F-84 **************************************************************************** FLOW PROCESS FROM NODE 3,00 TO NODE 4.00 IS CODE = 1 --------~~--------------------~~-----------~-----------------~~-~~----~~---- >>>>>SOBAREA RUNOFF (UNIT-HYDROGRAPH ANALYSIS)<<<<< =====~=~======~=~========~===========~=============~~=~===================== (UNIT-HYDROGRAPH ADDED TO STREAM #1) WATERSHED AREA = 5929,000 ACRES BASEFLOW = 0,000 CFS/SQUARE-MILE *USER ENTERED "LAG" TIME = 0.460 HOURS CAUTION: LAG TIME IS LESS THAN 0.50 HOURS, THE 5-MINUTE PERIOD OH MODEL (USED IN THIS COMPUTER PROGRAM) MAY BE TOO LARGE FOR PEAK FLOW ESTIMATES. FOOTHILL S-GRAPH SELECTED MAXIMUM WATERSHED LOSS RATE (INCH/HOUR) 0.328 LOW LOSS FRACTION = 0.109 *HYDROGRAPH MODEL #1 SPECIFIED* SPECIFIED PEAK 5-MINUTES RAINFALL(INCH)= 0.62 SPECIFIED PEAK 3D-MINUTES RAINFALL(INCH)= 1. 33 SPECIFIED PEAK 1-HOUR RAINFALL{INCH) 1. 78 SPECIFIED PEAK 3-HOUR RAINFALL(INCH) 3.50 SPECIFIED PEAK 6-HOOR RAINFALL(INCH} 5.40 SPECIFIED PEAK 24-HOUR RAINFALL(INCH} 14.70 *USER SPECIFIED PRECIPITATION DEPTH-AREA REDUCTION FACTORS: 5-MINUTE FACTOR = 0.754 3D-MINUTE FACTOR = 0.754 I-HOUR FACTOR 0.754 3-HOUR FACTOR 0.960 6-HOUR FACTOR 0.980 24-HOUR FACTOR 0.990 UNIT HYDROGRAPH TIME UNIT 5.000 MINUTES UNIT INTERVAL PERCENTAGE OF LAG-TIME = 18.116 ===~~==~=======~==========~=~~~~=========~~:========~==~====~=============== UNIT HYDROGRAPH DETERMINATION ---------------------------------~-~~-------~-----------------~------------- INTERVAL NUMBER "8fT GRAPH MEAN VALUES UNIT HYDROGRAPH ORDINATES (CFS) -~~----------------------~~~-~~~--------------------~---~------------------- 1 2 3 4 5 6 7 8 L 192 4.323 9,081 15,792 26.926 47.997 60.489 67,334 854.907 2245.042 3411.125 4812.522 7983.473 15108.547 8957.346 4908.329 F-85 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 72.642 77.045 80.404 83.519 86,066 88.232 90.044 91.693 93.105 94,321 95.305 96.161 96.754 97.338 97,890 98.081 98.175 98,269 98.363 98.456 98.550 98.644 98.737 98.831 98 . 925 99.019 99.112 99.206 99.299 99.393 99.487 99.580 99.674 99.767 99.861 99.954 100.000 F-86 3805,979 3157.087 2408.095 2233.962 1826,344 1552,843 1299.660 1182.010 1012.318 872.085 705.720 613.732 425.260 418.996 395.265 137.371 67.332 67.025 67.332 67.102 67.255 67.255 67.255 67.102 67,102 67.414 67.102 67.102 67.102 67.102 67.102 67.102 67.102 67.102 67,102 67.102 32.632 **************************************************************************** UNIT PERIOD (NUMBER} UNIT RAINFALL ( INCHES) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 0.0369 0.0369 0.0370 0,0370 0.0371 0.0371 0.0372 0.0372 0.0373 0.0374 0.0374 0.0375 0.0375 0.0376 0.0377 0.0377 0,0378 0.0378 0,0379 0.0379 0.0380 0.0380 0.0381 0.0382 0.0382 0.0383 0.0384 0.0384 0.0385 0.0385 0.0386 0.0387 0,0388 0.0388 0,0389 0,0389 0.0390 0.0391 0,0392 0.0392 0,0393 0.0393 0.0394 0.0395 0,0396 0.0396 0.0397 0,0398 0.0399 0,0399 0.0400 UNIT SOIL-LOSS (INCHES) EFFECTIVE RAINFALL ( INCHES) 0,0040 0,0040 0,0040 0.0040 0.0040 0.0040 0.0041 0.0041 0.0041 0.0041 0.0041 0.0041 0.0041 0.0041 0.0041 0.0041 0.0041 0,0041 0.0041 0.0041 0.0041 0.0041 0.0042 0,0042 0.0042 0.0042 0.0042 0.0042 0.0042 0.0042 0.0042 0.0042 0.0042 0.0042 0.0042 0.0042 0.0043 0.0043 0.0043 0.0043 0.0043 0.0043 0.0043 0.0043 0,0043 0.0043 0,0043 0.0043 0,0043 0.0044 0.0044 0,0329 0.0329 0.0330 0.0330 0.0331 0.0331 0.0332 0.0332 0.0333 0.0333 0,0333 0,0334 0.0334 0.0335 0.0336 0.0336 0,0337 0.0337 0,0338 0.0338 0.0339 0,0339 0.0340 0.0340 0.0341 0.0341 0.0342 0,0342 0.0343 0.0343 0.0344 0.0345 0.0345 0.0346 0.0347 0.0347 0.0348 0.0348 0.0349 0.0349 0.0350 0.0351 0.0351 0.0352 0.0353 0.0353 0,0354 0,0354 0.0355 0.0356 0.0357 F-87 52 0.0401 0.0044 0.0357 53 0,0402 0.0044 0.0358 54 0.0402 0.0044 0.0359 55 0.0403 0.0044 0.0359 56 0.0404 0.0044 0.0360 57 0.0405 0,0044 0.0361 58 0.0406 0.0044 0.0361 59 0.0407 0.0044 0,0362 60 0,0407 0,0044 0.0363 61 0,0408 0.0045 0.0364 62 0,0409 0.0045 0,0364 63 0,0410 0.0045 0,0365 64 0.0411 0,0045 0.0366 65 0.0412 0,0045 0.0367 66 0.0412 ,0.0045 0.0367 67 0.0413 0,0045 0.0368 68 0.0414 0.0045 0.0369 69 0.0415 0.0045 0.0370 70 0.0416 0.0045 0.0371 71 0,0417 0.0045 0.0372 72 0.0418 0.0046 0.0372 73 0.0419 0,0046 0.0373 74 0,0420 0.0046 0.0374 75 0.0421 0,0046 0,0375 76 0.0422 0.0046 0.0376 77 0.0423 0.0046 0,0377 78 0.0424 0.0046 0.0377 79 0.0425 0.0046 0.0379 80 0.0426 0,0046 0.0379 81 0.0427 0.0047 0.0380 82 0.0428 0,0047 0.0381 83 0,0429 0.0047 0,0382 84 0,0430 0,0047 0,0383 85 0.0431 0.0047 0,.0384 86 0.0432 0.0047 0.0385 87 0.0433 0.0047 0.0386 88 0.0434 0.0047 0.0387 89 0.0436 0.0047 0.0388 90 0.0436 0.0048 0,0389 91 0,0438 0.0048 0,0390 92 0.0439 0.0048 0.0391 93 0.0440 0.0048 0.0392 94 0.0441 0.0048 0.0393 95 0.0443 0.0048 0.0394 96 0.0443 0.0048 0.0395 97 0.0445 0,0049 0,0397 98 0,0446 0,0049 0.0397 99 0.0448 0.0049 0.0399 100 0.0449 0.0049 0,0400 101 0.0450 0.0049 0.0401 102 0,0451 0.0049 0.0402 103 0.0453 0.0049 0.0404 104 0,0454 0.0049 0.0404 105 0,0456 0.0050 0.0406 106 0,0457 0,0050 0,0407 107 0,0459 0,0050 0.0409 108 0.0460 0.0050 0.0409 F-88 109 0.0462 0.0050 0.0411 110 0.0463 0.0050 0.0412 111 0.0465 0,0051 0.0414 112 0.0466 0.0051 0.0415 113 0.0468 0.0051 0.0417 114 0,0469 0.0051 0,0418 115 0.0471 0.0051 0.0420 116 0.0472 0.0051 0.0421 117 0.0474 0.0052 0.0423 118 0.0475 0.0052 0.0424 119 0.0478 0.0052 0.0426 120 0.0479 0.0052 0.0427 121 0.0481 0,0052 0.0429 122 0,0482 0,0053 0.0430 123 0.0485 0.0053 0.0432 124 0.0486 0.0053 0.0433 125 0.0489 0,0053 0.0436 126 0.0490 0.0053 0.0437 127 0.0493 0.0054 0.0439 128 0.0494 0.0054 0.0440 129 0.0497 0.0054 0.0443 130 0.0498 0.0054 0.0444 131 0.0501 0,0055 0.0447 132 0.0503 0.0055 0,0448 133 0.0506 0.0055 0,0451 134 0.0507 0,0055 0.0452 135 0.0510 0,0056 0.0455 136 0.0512 0,0056 0.0456 137 0,0515 0.0056 0.0459 138 0.0517 0.0056 0.0461 139 0.0520 0.0057 0,0464 140 0.0522 0.0057 0.0465 141 0.0526 0.0057 0.0468 142 0.0528 0.0058 0.0470 143 0.0531 0,0058 0.0473 144 0.0533 0.0058 0.0475 145 0.0483 0.0053 0.0430 146 0,0485 0.0053 0.0432 147 0,0490 0.0053 0.0437 148 0.0493 0.0054 0.0439 149 O. 0498 0.0054 0,0443 150 0,0500 0.0055 0.0446 151 0.0506 0.0055 0,0451 152 0.0509 0,0055 0.0453 153 0,0514 0,0056 0.0458 154 0.0517 0.0056 0.0461 155 0.0524 0.0057 0.0467 156 0.0527 0,0057 0,0469 157 0.0534 0,0058 0.0475 158 0.0537 0.0059 0,0479 159 0.0544 0,0059 0.0485 160 0.0548 0,0060 0,0488 161 0,0556 0,0061 0.0495 162 0.0560 0.0061 0.0499 163 0.0569 0.0062 0.0507 164 0,0573 0.0062 0.0511 165 0.0582 0,0063 0,0519 F-89 166 0.0587 0.0064 0.0523 167 0.0598 0.0065 0.0533 168 0.0603 0.0066 0.0537 169 0,0781 0.0085 0,0696 170 0.0785 0,0086 0.0700 171 0,0793 0.0086 0,0706 172 0.0797 0,0087 0.0710 173 0.0806 0.0088 0.0718 174 0.0810 0,0088 0.0722 175 0.0820 0,0089 0.0731 176 0.0825 0.0090 0,0735 177 0.0836 0.0091 0.0745 178 0,0842 0.0092 0.0751 179 0.0855 0.0093 0.0762 180 O. 0862 0,0094 0,0768 181 0,0878 0.0096 0.0782 182 0.0887 0.0097 0.0790 183 0.0906 0.0099 0.0807 184 0.0916 0.0100 0.0816 185 0.0482 0.0053 0.0429 186 0.0509 0.0055 0,0453 187 0.0574 0,0063 0,0512 188 0,0618 0,0067 0.0551 189 0.0742 0.0081 0.0661 190 0,0834 0.0091 0.0743 191 0.1176 0,0128 0.1047 192 0,1600 0.0174 0.1426 193 O. 4712 0.0273 0.4439 194 0.0965 0.0105 0.0860 195 0.0671 0.0073 0.0598 196 0,0538 0.0059 0,0480 197 0.0928 0,0101 0.0827 198 0.0896 0.0098 0,0798 199 0.0870 0.0095 0.077 5 200 0.0849 0.0093 0.0756 201 0.0831 0.0091 0.0740 202 0,0815 0.0089 0.0726 203 0.0801 0.0087 0.0714 204 0.0789 0.0086 0.0703 205 0.0609 0.0066 0.0542 206 0,0592 0,0065 0.0528 207 0.0578 0,0063 0.0515 208 0.0564 0.0062 0.0503 209 0.0552 0,0060 0.0492 210 0.0541 0.0059 0.0482 211 0.0530 0.0058 0.0472 212 0.0521 0.0057 0.0464 213 0,0511 0.0056 0,0456 214 0,0503 0,0055 0,0448 215 0.0495 0.0054 0.0441 216 0.0488 0.0053 0.0434 217 0.0535 0.0058 0.0477 218 0.0530 0,0058 0.0472 219 0.0524 0.0057 0,0467 220 0.0519 0.0057 0,0462 221 0.0514 0.0056 0.0458 222 0,0509 0.0055 0.0453 F-90 223 0.0504 0.0055 0,0449 224 0.0500 0.0054 0.0445 225 0,0496 0.0054 0.0442 226 0.0491 0.0054 0.0438 227 0.0488 0.0053 0.0434 228 0.0484 0.0053 0.0431 229 0.0480 0.0052 0.0428 230 0.0477 0.0052 0.0425 231 0.0473 0.0052 0.0422 232 0.0470 0,0051 0.0419 233 0.0467 0.0051 0,0416 234 0.0464 0.0051 0.0413 235 0.0461 0,0050 0,0410 236 0.0458 0.0050 0.0408 237 0.0455 0.0050 0,0405 238 0,0452 0.0049 0.0403 239 0.0449 0.0049 0.0400 240 0.0447 0.0049 0.0398 241 0.0444 0.0048 0.0396 242 0.0442 0,0048 0.0394 243 0.0439 0.0048 0.0392 244 0,0437 0.0048 0.0389 245 0,0435 0,0047 0.0387 246 0.0433 0.0047 0.0385 247 0.0430 0.0047 0.0383 248 0,0428 0.0047 0,0382 249 0.0426 0,0046 0,0380 250 0.0424 0.0046 0.0378 251 0.0422 0.0046 0.0376 252 0.0420 0.0046 0.0374 253 0,0418 0.0046 0.0373 254 0.0417 0.0045 0,0371 255 0.0415 0.0045 0,0369 256 0.0413 0.0045 0.0368 257 0.0411 0.0045 0.0366 258 0.0409 0.0045 0.0365 259 0.0408 0.0044 0.0363 260 0.0406 0.0044 0.0362 261 0.0404 0.0044 0.0360 262 0.0403 0,0044 0.0359 263 0.0401 0,0044 0.0358 264 0.0400 0,0044 0.0356 265 0.0398 0.0043 0,0355 266 0.0397 0,0043 0.0354 267 0.0395 0.0043 0.0352 268 0.0394 0.0043 0.0351 269 0.0393 0.0043 0.0350 270 0.0391 0.0043 0.0349 271 0.0390 0.0042 0.0347 272 0.0388 0,0042 0,0346 273 0.0387 0.0042 0.0345 274 0.0386 0.0042 0.0344 275 0.0385 0,0042 0.0343 276 0.0383 0.0042 0.0342 277 0,0382 0.0042 0.0340 278 0,0381 0.0042 0.0339 279 0,0380 0.0041 0.0338 F-91 280 281 282 283 284 285 286 287 288 0.0378 0.0377 0.0376 0.0375 0.0374 0,0373 0.0372 0.0371 0.0370 0.0041 0.0041 0.0041 0.0041 0,0041 0.0041 0.0041 0.0040 0.0040 TOTAL STORM RAINFALL (INCHES) 14.55 TOTAL SOIL-LOSS (INCHES) = 1.56 TOTAL EFFECTIVE RAINFALL {INCHES) = 12.99 TOTAL SOIL-LOSS VOLUME(ACRE-FEET) = 771.8786 TOTAL STORM RUNOFF VOLUME (ACRE-FEET) = 6415.2002 F-92 0.0337 0.0336 0.0335 0,0334 0.0333 0.0332 0.0331 0.0330 0.0329 =======~~~==============~=~~=======~=================:====~~=======~======== 2 4 - H 0 U R S TOR M RUN 0 F F H Y 0 R 0 G RAP H =~~~====================~==========~~================~=======~~======~=====~ HYDROGRAPH IN FIVE-MINUTE UNIT INTERVALS (CFS) (Note: Time indicated is at END of Each Unit Intervals) ---------------------------------~-----------------~-~~----~~-------------~~ TIME (HRS) VOLUME (AF) Q(CFS) O. 2875.0 5750.0 8625.0 11500.0 ----------------~--------------~~~----------~-~------------~------~--------~ 0.083 0.1935 28.10 Q 0,167 0.8955 101.92 Q 0.250 2,3704 214.17 Q 0.333 4.9367 372.63 VQ 0.417 9.313 6 635.53 V Q 0.500 17.1164 1132.96 V Q 0.583 26.9569 1428,84 V Q 0.667 37.9227 1592.23 V Q 0.750 49,7652 1719.52 V Q 0.833 62,3395 1825.80 V Q 0.917 75.4766 1907.51 V Q 1. 000 89.1388 1983.75 V Q 1.083 103.2337 2046.59 V Q 1.167 117.7012 2100.68 V Q 1. 250 132.4836 2146.40 V Q 1. 333 147.5558 2188.48 V Q 1.417 162.8789 2224.92 .V Q 1,500 178.4227 2256.96 .V Q 1. 583 194.1490 2283.45 .V Q 1.667 210.0383 2307,13 .V Q 1.750 226.0475 2324.53 .V Q 1. 833 242.1764 2341. 91 .V Q 1.917 258.4189 2358.41 .V Q 2,000 274.7179 2366.61 .V Q 2.083 291.0568 2372.42 .V Q 2.167 307.4368 2378,37 .V Q 2.250 323,8571 2384.23 V Q 2,333 340.3189 2390.25 V Q 2.417 356.8215 2396.18 V Q 2.500 373.3661 2402.27 V Q 2.583 389.9518 2408,24 V Q 2.667 406.5798 2414.39 V Q 2.750 423.2495 2420.44 V Q 2.833 439.9620 2426,66 V Q 2,917 456.7166 2432.76 V Q 3.000 473,5144 2439,04 V Q 3.083 490.3547 2445.21 V Q 3.167 507.2387 2451.56 V Q 3.250 524,1656 2457.79 V Q 3.333 541.1368 2464,22 V Q 3,417 558.1516 2470,54 V Q 3.500 575.2111 2477.04 V Q 3,583 592.3146 2483,42 V Q 3,667 609,4633 2490.00 V Q 3,750 626,6487 2495.32 V Q F-93 3.833 643,8647 2499.77 v Q. F-94 -----~~--~~------------------~-----------------------~------------~--------- TIME(HRS) VOLUME (AF) Q(CFS) O. 2875.0 5750.0 8625.0 11500,0 -----------------------------~-~~--------~----~~~-~-~------------~--------~- 3,917 661.1105 2504,08 V Q 4.000 678.3874 2508.61 V Q 4.083 695.6945 2513.00 V 0 4.167 713,0333 2517 . 59 V Q 4.250 730,4029 2522.07 V Q 4.333 747,8047 2526.74 V Q 4.417 765.2378 2531.29 V Q 4.500 782.7037 2536.04 V Q 4.583 800.2015 2540.68 V Q 4.667 817.7326 2545.52 V Q 4,750 835,2962 2550.23 V Q 4.833 852,8937 2555.16 V Q 4.917 870,5243 2559.95 V Q 5.000 888.1894 2564.97 V Q 5.083 905,8881 2569.86 V Q 5.167 923.6221 2574.97 V Q 5.250 941.3903 2579.95 V Q 5.333 959.1944 2585.15 V Q 5.417 977.0334 2590.22 V Q. 5,500 994.9089 2595.53 V Q, 5.583 1012.8200 2600.69 V Q, 5.667 1030.7683 2606.09 V Q, 5,750 1048,7529 2611. 36 V Q. 5,833 1066.7755 2616.88 V Q. 5.917 1084.8350 2622,23 V Q. 6.000 1102.9331 2627.85 V Q, 6,083 1121.0690 2633.32 V Q. 6.167 1139.2443 2639.06 V Q. 6.250 1157.4581 2644,64 V Q. 6.333 1175.7123 2650.50 V Q. 6.417 1194.0056 2656.19 V Q, 6.500 1212.3401 2662.17 V Q. 6.583 1230.7146 2667.98 V Q. 6.667 1249.1312 2674.09 V Q, 6,750 1267.5887 2680.03 V Q. 6.833 1286.0892 2686.28 VQ, 6.917 1304.6315 2692.34 VQ. 7.000 1323.2177 2698.71 VQ. 7.083 1341.8466 2704.91 VQ, 7.167 1360.5204 2711. 44 VQ, 7.250 1379.2378 2717.77 VQ. 7,333 1398,0011 2724.44 VQ. 7.417 1416,8091 2730,93 VQ. 7.500 1435.6641 2737.75 VQ. 7.583 1454.5647 2744.37 Q. 7,667 1473.5134 2751. 35 Q. 7.750 1492.5089 2758.14 Q, 7.833 1511.5536 2765,29 Q. 7.917 1530.6462 2772.25 Q, 8.000 1549,7894 2779.58 Q, F-95 ----------------~--~~-------------~-~~~-----------------~--------~---------- TIME (HRS) VOLUME (AF) Q(CFS) O. 2875.0 5750.0 8625.0 11500,0 -----------------------------------------~~~-------------------------------- 8.083 1568.9816 2786.70 Q. 8.167 1588.2255 2794.22 Q. 8.250 1607.5197 2801. 51 QV 8.333 1626.8668 2809.21 QV 8.417 1646.2656 2816.71 QV 8,500 1665.7189 2824.61 QV 8.583 1685.2251 2832.30 QV 8.667 1704.7871 2840,40 QV 8.750 1724.4036 2848.30 QV 8.833 1744,0773 2856.63 QV 8.917 1763,8069 2864.74 QV 9.000 1783,5955 2873.30 Q.v 9.083 1803.4414 2881.63 QV 9.167 1823.3480 2890.44 QV 9.250 1843.3137 2899.01 QV 9.333 1863.3418 2908.07 QV 9.417 1883.4307 2916.90 QV 9.500 1903.5837 2926.23 QV 9.583 1923.7994 2935.32 QV 9,667 1944.0813 2944.93 Q V 9.750 1964.4277 2954.30 Q V 9.833 1984.8424 2964.20 Q V 9.917 2005.3236 2973.88 Q V 10.000 2025.8752 2984.10 Q V 10.083 2046.4956 2994.08 Q V 10.167 2067.1887 3004.63 Q V 10.250 2087.9529 3014094 Q V 10.333 2108.7920 3025.85 Q V 10.417 2129,7046 3036.51 Q V 10.500 2150.6948 3047.79 Q V 10.583 2171.7610 3058.82 Q V 10.667 2192.9077 3070.50 Q V 10.750 2214.1331 3081.94 Q V 10.833 2235.4419 3094.04 Q V 10.917 2256.8323 3105.89 Q V 11 . 000 2278.3091 3118.45 Q V 11. 083 2299.8708 3130.75 Q V 11. 167 2321. 5225 3143.80 Q V 11 . 250 2343.2620 3156,58 Q V 11. 333 2365.0950 3170,15 .Q V 11.417 2387,0195 3183.46 .Q V 11. 500 2409,0415 3197,58 ,Q V 11. 583 2431.1589 3211.44 .Q V 11. 667 2453.3777 3226.17 .Q V 11.750 2475,6960 3240.63 .Q V 11.833 2498.1204 3256.01 .Q V 11.917 2520.6487 3271.12 ,Q V 12,000 2543.2878 3287.21 ,Q V 12.083 2566.0073 3298,87 .Q V 12.167 2588,7678 3304.83 .Q V F-96 ---------------------------------------------~-~~~---------~~~~-~----------- TIME(HRS) VOLUME (AF) Q(CFS) O. 2875.0 5750.0 8625.0 11500.0 -----------------------------~~----~-~----------------------~~--------~--~~- 12.250 2611.5291 3304.95 .Q V 12.333 2634.2529 3299,49 .Q V 12,417 2656,8325 3278.57 .Q V 12.500 2679,0400 3224.52 .Q V 12.583 2701. 0833 3200,66 .Q V 12.667 2723.1101 3198.29 ,Q V 12,750 2745.1570 3201,20 .Q V 12.833 2767.2573 3208.97 .Q V 12.917 2789.4353 3220.24 .Q V 13.000 2811.7092 3234.16 ,Q V 13.083 2834,0916 3249,91 .Q V 13.167 2856.6047 3268.92 .Q V 13.250 2879.2563 3289.01 .Q V 13.333 2902.0647 3311. 76 .Q V 13.417 2925.0344 3335.22 ,Q V 13.500 2948.1860 3361.63 .Q V 13.583 2971.5247 3388.76 ,Q V 13.667 2995.0703 3418.84 .Q V 13.750 3018.8293 3449.80 .Q V 13.833 3042.8208 3483.57 Q V 13.917 3067,0459 3517.49 Q V. 14.000 3091.5347 3555.78 Q V. 14.083 3116.3779 3607.24 Q V. 14.167 3141. 7407 3682.68 Q V. 14.250 3167.7395 3775.04 Q V. 14.333 3194.5378 3891.13 Q V. 14.417 3222.4524 4053.18 Q V 14.500 3252.2263 4323.16 Q V 14.583 3283.2014 4497,58 Q V 14.667 3314.9663 4612,26 Q V 14.750 3347.4021 4709.66 Q V 14,833 3380.4607 4800.11 Q .V 14.917 3414.0642 4879.24 Q .V 15.000 3448.2205 4959.50 Q .V 15.083 3482.8911 5034.18 Q .V 15.167 3518.0808 5109.54 Q .V 15,250 3553.7720 5182.37 Q V 15.333 3589.9956 5259.67 Q V 15.417 3626.5093 5301.79 Q V 15.500 3662.9709 5294.25 Q V 15,583 3699.0908 5244.61 Q V 15.667 3734.5947 5155,17 Q V 15.750 3768.7146 4954.19 Q V 15.833 3799.7310 4503,57 Q V 15,917 3829.8474 4372.91 Q V 16.000 3861.0439 4529.73 Q V 16.083 3896.1587 5098.65 Q V 16.167 3937.0916 5943.44 Q V 16,250 3983,6692 6763.07 QV 16.333 4037.2358 7777.86 V Q F-97 - -..... --------- -'- - - ~ -~ ~-- --- ---- --- ..........- -- --- -. - -.~ ~-- -.... -- ---- ..;...-......- ---- --.;.-- -- -- ---- --.- TIME (HRS ) VOLUME (AF) Q(CFS) O. 2875.0 5750.0 8625,0 11500.0 --------~-_......~---------~~~-------------~......_------~~~----------~------~--------- 16.417 4101. 0986 9272.86 V Q 16.500 4179,6616 11407.36 V Q. 16.583 4240,7998 8877,27 V Q 16.667 4289.5303 7075.68 Q V 16.750 4334.4106 6516.66 Q V 16.833 4379.3638 6527.21 Q V 16.917 4423.1113 6352.12 Q V 17,000 4466,1201 6244.88 .Q V 17,083 4507.7104 6038.95 .Q V 1 7 . 1 67 4548.0068 5851.03 Q V 17.250 4586.8677 5642.62 Q. V 17.333 4624.5596 5472.85 Q. V 17.417 4660.5928 5232.01 Q V. 17 ,500 4694.2456 4886.39 Q V. 17.583 4726.0352 4ti15.85 Q V. 17.667 4756.5420 4429.59 Q V. 17.750 4785,7046 4234.43 Q V. 17 ,833 4813.9927 4107,42 Q V 17 ,917 4841.3921 3978.38 Q V 18.000 4867.4443 3782.81 Q V 18.083 4892.6938 3666,22 Q V 18.167 4917.4590 3595.90 Q V 18,250 4941.8574 3542.66 Q V 18.333 4965,9131 3492.90 Q V 18,417 4989.7593 3462.50 Q .V 18.500 5013.6753 3472.62 Q .V 18.583 5037.4976 3459.02 Q .V 18.667 5061.1201 3430.02 .Q ,v 18.750 5084.5430 3400.99 .Q .V 18.833 5107.7607 3371.19 .Q ,v 18.917 5130.7622 3339,80 .Q .V 19.000 5153,5806 3313.26 ,Q V 19.083 5176,2310 3288.84 .Q V 19.167 5198.7231 3265.89 ,Q V 19.250 5221.0571 3242,87 .Q V 19.333 5243.2354 3220.27 .Q V 19.417 5265.2568 3197.53 .Q V 19.500 5287.1201 3174,56 .Q V 19.583 5308.8179 3150,48 Q V 19,667 5330.3369 3124.58 Q V 19.750 5351.5972 3086.99 Q V 19.833 5372,6211 3052.67 Q V 19,917 5393.4995 3031. 54 Q V 20.000 5414.2373 3011.11 Q V 20.083 5434.8306 2990.15 Q V 20,167 5455.2764 2968.74 Q V 20,250 5475.5796 2948.05 Q V 20.333 5495.7451 2928.02 Q V 20.417 5515,7769 2908,61 Q V 20,500 5535.6787 2889,77 Q V F-98 --------~~-------~---------------------------~--~~~~~~-----~-------------~-- TIME (HRS) VOLOME(AF) Q (CFS) O. 2875,0 5750.0 8625,0 11500.0 --------------------------------------------~-~----------------------------- 20.583 5555.4546 2871.46 Q. V 20 . 667 5575.1079 2853.65 Q. V 20.750 5594.6455 2836.83 Q. V 20.833 5614.0737 2820.98 Q. V 20.917 5633.3960 2805.57 Q, V 21,000 5652.614 7 2790.59 Q, V 21. 083 5671. 7334 2776.02 Q. V 21. 167 5690.7544 2761.85 Q. V 21. 250 5709.6802 2748.04 Q. V 21. 333 5728.5137 2734.59 Q. V 21.417 5747.2568 2721.48 Q, V 21. 500 5765.9116 2708.67 Q, V 21.583 5784.4805 2696 .18 Q. V 21. 667 5802,9653 2683.98 Q, V 21.750 5821.3667 2671,88 Q, V 21.833 5839.6855 2659.89 Q. V 21.917 5857.9238 2648.16 Q. V 22.000 5876.0830 2636.68 Q. V 22.083 5894.1646 2625,43 Q. V 22..167 5912.1704 2614.42 Q. V 22,250 5930.1016 2603.62 Q. V 22,333 5947.9600 2593.03 Q. V 22.417 5965,7466 2582.64 Q V 22.500 5983.4634 2572.45 Q . V 22.583 6001.1108 2562.44 Q. . V 22.667 6018.6909 2552.61 Q V 22.750 6036.2046 2542.96 Q V 22.833 6053.6528 2533.48 Q V 22.917 6071. 0371 2524.16 Q V 23.000 6088.3584 2515.02 Q V 23.083 6105.6177 2506.03 Q V 23,167 6122.8159 2497.19 Q V 23.250 6139.9541 2488,48 Q V 23,333 6157.0337 2479,92 Q V 23.417 6174,0552 2471.51 Q V 23.500 6191.0195 2463.23 Q V 23.583 6207.9277 2455,08 Q V 23,667 6224.7808 2447.06 Q V 23.750 6241. 5796 2439.16 Q V 23,833 6258.3247 2431. 38 Q V. 23.917 6275.0171 2423.73 Q V. 24.000 6291.6572 2416.18 Q V. 24.083 6308,0527 2380.65 Q V, 24,167 6323.8906 2299.67 Q V, 24,250 6338.9092 2180.71 Q V. 24.333 6352.7944 2016.13 Q V. 24.417 6364.8325 1747.96 Q V. 24,500 6373.4180 1246.62 Q V, 24,583 6379.9521 948.74 Q V, 24.667 6385.3564 784.70 Q V, F-99 ------------------------------~--------------------~-----------'------------- TIME (HRS} VOLOME(AF) 24.750 24.833 24,917 25.000 25.083 25,167 25,250 25,333 25.417 25.500 25,583 25,667 25,750 25.833 25.917 26.000 26,083 26.167 26.250 26.333 26.417 26.500 26.583 26.667 26,750 26,833 26.917 27.000 27.083 27 . 167 27.250 27.333 27.417 27,500 27.583 27,667 6389.8838 6393.6831 6396.9263 6399.6548 6401. 9619 6403.9106 6405.5596 6406.9360 6408.0796 6409.0225 6409.8027 6410,4419 6410.9829 6411.4272 6411.7808 6412.1025 6412.4077 6412.6968 6412.9697 6413.2266 6413.4678 6413.6929 6413.9019 6414.0952 6414,2729 6414.4346 6414.5806 6414.7109 6414.8262 6414.9258 6415.0098 6415.0786 6415.1318 6415.1699 6415,1924 6415.1997 Q(CFS) O. 657.34 551. 68 470.94 396.15 334.98 282.97 239.43 199.89 166.04 136,90 113.30 92.80 78,55 64.54 51.36 46.69 44.33 41. 99 39.65 37.32 35,00 32.68 30.37 28,08 25.79 23,50 21.23 18,96 16.70 14.45 12.20 9.96 7.73 5.51 3.29 1. 07 Q .Q .Q ,Q .Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q 2875,0 5750.0 8625.0 11500,0 V. V. V. v, v, v. v, V. v. V. v, v, V. V. v. v. v. v, v, V. V. V. v, V. v, V. V. V. V. v, v. v, V. V. V. V. -----------------------------~~~~-~-~~~~~------------~-----------------~-~~- ----------------------------_._~~--~-~~-~-~-------------------------------~~~-- END OF FLOODSCx ROOTING ANALYSIS F -100 F-IOl *********************************~****************************************** F L 0 0 D R 0 UTI N G A N A L Y S I S USING COUNTY HYDROLOGY MANUAL OF SAN BERNARDINO (1986) (c) Copyright 1989-2002 Advanced Engineering Software (aes) Ver, 8,0 Release Date: 01/01/2002 License ID 1542 Analysis prepared by: TRANSTECH ENGINEERS, INC. 624 Brea Canyon Road Walnut, CA 91789 ************************** DESCRIPTION OF STUDY ************************** * EAST TWIN CREEK * DEVELO~ED CONDITION * * * * ************************************************************************** FILE NAME: AS-4.DAT TIME/DATE OF STUDY: 12:05 03/04/2005 F-I02 **************************************************************************** FLOW PROCESS FROM NODE 3,00 TO NODE 4.00 IS CODE = 1 >>>>>SUBAREA RUNOFF (UNIT-HYDROGRAPH ANALYSIS)<<<<< ------------------------------------------------~._--~-"~~---------------~'"'---- -------------------------------------------~---- --------~~.~~-------------------- (UNIT-HYDROGRAPH ADDED TO STREAM #1) WATERSHED AREA = 5929.000 ACRES BASEFLOW = 0.000 eFS/SQUARE-MILE *USER ENTERED "LAG" TIME = 0.460 HOURS CAUTION: LAG TIME IS LESS THAN 0.50 HOURS, THE 5-MINUTE PERIOD UH MODEL (USED IN THIS COMPUTER PROGRAM) MAY BE TOO LARGE FOR PEAK FLOW ESTIMATES. FOOTHILL S-GRAPH SELECTED MAXIMUM WATERSHED LOSS RATE (INCH/HOUR) 0.132 LOW LOSS FRACTION = 0,110 *HYDROGRAPH MODEL #1 SPECIFIED* SPECIFIED PEAK 5-MINUTES RAINFALL(INCH)~ 0,62 SPECIFIED PEAK 30-MINUTES RAINFALL(INCH)= 1.33 SPECIFIED PEAK I-HOUR RAINFALL(INCH) 1. 78 SPECIFIED PEAK 3-HOUR RAINFALL(INCH) 3.50 SPECIFIED PEAK 6-HODR RAINFALL(INCH) 5,40 SPECIFIED PEAK 24-HODR RAINFALL(INCH) 14.70 *USER SPECIFIED PRECIPITATION DEPTH-AREA REDUCTION FACTORS: 5-MINDTE FACTOR = 0.754 3D-MINUTE FACTOR = 0.754 I-HOUR FACTOR 0.754 3-HOUR FACTOR 0.960 6-HOUR FACTOR 0,980 24-HOUR FACTOR 0.990 UNIT HYDROGRAPH TIME UNIT 5.000 MINUTES UNIT INTERVAL PERCENTAGE OF LAG-TIME = 18.116 ----------------------_._-------~----~----------------~---~------------------- ----------------------------~~----------------------------------------------- UNIT HYDROGRAPH DETERMINATION INTERVAL NUMBER "S" GRAPH MEAN VALUES UNIT HYDROGRAPH ORDINATES (CFS) 1 2 3 4 5 6 7 8 1,192 4.323 9.081 15.792 26.926 47.997 60.489 67,334 854,907 2245,042 3411.125 4812,522 7983.473 15108.547 8957.346 4908.329 F -103 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 2S 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 72.642 77.045 80.404 83.519 86.066 88.232 90.044 91. 693 93.105 94 .321 95.305 96.161 96.754 97.338 97.890 98.081 98.175 98.269 98.363 98.456 98.550 98.644 98.737 98.831 98.925 99.019 99.112 99.206 99.299 99..393 99.487 99.580 99.674 99.767 99.861 99.954 100.000 F -104 3805.979 3157.087 2408.095 2233.962 1826.344 1552.843 1299.660 1182.010 1012.318 872.085 705.720 613.732 425.260 418.996 395.265 137.371 67.332 67.025 67.332 67.102 67.255 67.255 67.255 67.102 67.102 67.414 67.102 67.102 67.102 67.102 67.102 67.102 67.102 67.102 67.102 67.102 32.632 **************************************************************************** UNIT PERIOD (NUMBER) UNIT RAINFALL (INCHES) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 0.0369 0.0369 0.0370 0.0370 0.0371 0.0371 0.0372 0.0372 0.0373 0.0374 0.0374 0.0375 0.0375 0.0376 0.0377 0.0377 0.0378 0.0378 0.0379 0.0379 0.0380 0.0380 0.0381 0.0382 0.0382 0.0383 0.0384 0.0384 0.0385 0.0385 0.0386 0.0387 0.0388 0.0388 0.0389 0.0389 0.0390 0.0391 0.0392 0.0392 0.0393 0.0393 0.0394 0.0395 0.0396 0.0396 0.0397 o . 0398 0.0399 0.0399 0.0400 UNIT SOIL-LOSS (INCHES) EFFECTIVE RAINFALL (INCHES) 0.0041 0.0041 0.0041 0.0041 0.0041 0.0041 0.0041 0.0041 0.0041 0.0041 0.0041 0.0041 0.0041 0.0041 0.0041 0.0041 0.0042 0.0042 0.0042 0.0042 0.0042 0.0042 0.0042 0.0042 0.0042 0.0042 0.0042 0.0042 0.0042 0.0042 0.0042 0.0043 0.0043 0.0043 0.0043 0.0043 0.0043 0.0043 0.0043 0.0043 0.0043 0.0043 0.0043 0.0043 0.0044 0.0044 0.0044 0.0044 0.0044 0.0044 0.0044 0.0328 0.0329 0.0329 0.0330 0.0330 0.0331 0.0331 0.0331 0.0332 0.0332 0.0333 0.0333 0.0334 0.0334 0.0335 0.0335 0.0336 0.0337 0.0337 0.0338 0.0338 0.0339 0.0339 0.0340 0.0340 0.0341 0.0342 0.0342 0.0343 0.0343 0.0344 0.0344 0.0345 0.0345 0.0346 0.0347 0.0347 0.0348 0.0349 0.0349 0.0350 0.0350 0.0351 0.0351 0.0352 0.0353 0.0354 0.0354 0.0355 0.0355 0.0356 F-I05 52 0.0401 0.0044 0.0357 53 0.0402 0.0044 0.0358 54 0.0402 0.0044 0.0358 55 0.0403 0.0044 0.0359 56 0.0404 0.0044 0.0360 57 0.0405 0.0045 0.0360 58 0.0406 0.0045 0.0361 59 0.0407 0.0045 0.0362 60 0.0407 0.0045 0.0362 61 0.0408 0.0045 0.0363 62 0.0409 0.0045 0.0364 63 0.0410 0.0045 0.0365 64 0.0411 0.0045 0.0365 65 0.0412 0.0045 0.0366 66 0.0412 0.0045 0.0367 67 0.0413 0.0045 0.0368 68 0.0414 0.0046 0.0369 69 0.0415 0.0046 0.0370 70 0.0416 0.0046 0.0370 71 0.0417 0.0046 0.0371 72 0.0418 0.0046 0.0372 73 0.0419 0.0046 0.0373 74 0.0420 0.0046 0.0373 75 0.0421 0.0046 0.0375 76 0.0422 0.0046 0.0375 77 0.0423 0.0047 0.0376 78 0.0424 0.0047 0.0377 79 0.0425 0.0047 0.0378 80 0.0426 0.0047 0.0379 81 0.0427 0.0047 0.0380 82 0.0428 0.0047 0.0381 83 0.0429 0.0047 0.0382 84 0.0430 0.0047 0.0382 85 0.0431 0.0047 0.0384 86 0.0432 0.0048 0.0384 87 0.0433 0.0048 0.0386 88 0.0434 0.0048 0.0386 89 0.0436 0.0048 0.0388 90 0.0436 0.0048 0.0388 91 0.0438 0.0048 0.0390 92 0.0439 0.0048 0.0390 93 0.0440 0.0048 0.0392 94 0.0441 0.0049 0.0393 95 0.0443 0.0049 0.0394 96 0.0443 0.0049 0.0395 97 0.0445 0.0049 0.0396 98 0.0446 0.0049 0.0397 99 0.0448 0.0049 0.0398 100 0.0449 0.0049 0.0399 101 0.0450 0.0050 0.0401 102 0.0451 0.0050 0.0402 103 0.0453 0.0050 0.0403 104 0.0454 0.0050 0.0404 105 0.0456 0.0050 0.0406 106 0.0457 0.0050 0.0406 107 0.0459 0.0050 0.0408 108 0.0460 0.0051 0.0409 F -106 109 0.0462 0.0051 0.0411 110 0.0463 0.0051 0.0412 111 0.0465 0.0051 0.0413 112 0.0466 0.0051 0.0414 113 0.0468 0.0051 0.0416 114 0.0469 0.0052 0.0417 115 0.0471 0.0052 0.0419 116 0.0472 0.0052 0.0420 117 0.0474 0.0052 0.0422 118 0.0475 0.0052 0.0423 119 0.0478 0.0053 0.0425 120 0.0479 0.0053 0.0426 121 0.0481 0.0053 0.0428 122 0.0482 0.0053 0.0429 123 0.0485 0.0053 0.0432 124 0.0486 0.0053 0.0433 125 0.0489 0.0054 0.0435 126 0.0490 0.0054 0.0436 127 0.0493 0.0054 0.0439 128 0.0494 0.0054 0.0440 129 0.0497 0.0055 0.0442 130 o . 0498 0.0055 0.0444 131 0.0501 0.0055 0.0446 132 0.0503 0.0055 0.0447 133 0.0506 0.0056 0.0450 134 0.0507 0.0056 0.0451 135 0.0510 0.0056 0.0454 136 0.0512 0.0056 0.0456 137 0.0515 0.0057 0.0459 138 0.0517 0.0057 0.0460 139 0.0520 0.0057 0.0463 140 0.0522 0.0057 0.0465 141 0.0526 0.0058 0.0468 142 0.0528 0.0058 0.0470 143 0.0531 0.0058 0.0473 144 0.0533 0.0059 0.0475 145 0,0483 0.0053 0.0430 146 0.0485 0.0053 0.0432 147 0.0490 0.0054 0.0436 148 0.0493 0.0054 0.0438 149 0.0498 0.0055 0.0443 150 0.0500 0.0055 0.0445 151 0.0506 0.0056 0.0450 152 0.0509 0.0056 0.0453 153 0.0514 0.0057 0.0458 154 0.0517 0,0057 0.0461 155 0.0524 0.0058 0.0466 156 0.0527 0.0058 0.0469 157 0.0534 0.0059 0.0475 158 0.0537 0.0059 0.0478 159 0.0544 0.0060 0.0484 160 0.0548 0.0060 0.0488 161 0.0556 0.0061 0.0495 162 0.0560 0.0062 0.0498 163 0.0569 0.0063 0.0506 164 0.0573 0.0063 0.0510 165 0.0582 0.0064 0.0518 F -107 166 0.0587 0..0065 0.0523 167 0.0598 0.0066 0.0532 168 0.0603 0.0066 0.0537 169 0.0781 0.0086 0.0695 170 0.0785 0.0086 0.0699 171 0.0793 0.0087 0.0706 172 0.0797 0.0088 0.0709 173 0.0806 0.0089 0.0717 174 0.0810 0.0089 0.0721 175 0.0820 0.0090 0.0730 176 0.0825 0.0091 0.0734 177 0.0836 0.0092 0.0744 178 0.0842 0.0093 0.0750 179 0.0855 0.0094 0.0761 180 0.0862 0.0095 0.0768 181 0.0878 0.0097 0.0781 182 0.0887 0.0098 0.0789 183 0.0906 0.0100 0.0806 184 0.0916 0.0101 0.0816 185 0.0482 0.0053 0.0429 186 0.0509 0.0056 0.0453 187 0.0574 0.0063 0.0511 188 0.0618 0.0068 0.0550 189 0.0742 0.0082 0.0660 190 0.0834 0.0092 0.0742 191 0.1176 0.0110 0.1066 192 0.1600 0.0110 0.1490 193 0.4712 0.0110 0.4602 194 0.0965 0.0106 0.0859 195 0.0671 0.0074 0.0597 196 0.0538 0.0059 0.0479 197 0.0928 0.0102 0.0826 198 0.0896 0.0099 0.0797 199 0.0870 0.0096 0.0774 200 0.0849 0.0093 0.0755 201 0.0831 0.0091 0.0739 202 0.0815 0.0090 0.0725 203 0.0801 0.0088 0.0713 204 0.0789 0.0087 0.0702 205 0.0609 0.0067 0.0542 206 0.0592 0.0065 0.0527 207 0.0578 0.0064 0.0514 208 0.0564 0.0062 0.0502 209 0.0552 0.0061 0.0491 210 0.0541 0.0059 0.0481 211 0.0530 0.0058 0.0472 212 0.0521 0.0057 0.0463 213 0.0511 0.0056 0.0455 214 0.0503 0.0055 0.0448 215 0.0495 0.0054 0.0441 216 0.0488 0.0054 0.0434 217 0.0535 0.0059 0.0476 218 0.0530 0.0058 0.0471 219 0.0524 0.0058 0.0466 220 0.0519 0.0057 0.0462 221 0.0514 0.0056 0.0457 222 0.0509 0.0056 0.0453 F -108 223 0.0504 0.0055 0.0449 224 0.0500 0.0055 0.0445 225 0.0496 0.0055 0.0441 226 0.0491 0.0054 0.0437 227 0.0488 0.0054 0.0434 228 0.0484 0.0053 0.0431 229 0.0480 0.0053 0.0427 230 0.0477 0.0052 0.0424 231 0.0473 0.0052 0.0421 232 0.0470 0.0052 0.0418 233 0.0467 0.0051 0.0415 234 0.0464 0.0051 0.0413 235 0.0461 0.0051 0.0410 236 0.0458 0.0050 0.0407 237 0.0455 0.0050 0.0405 238 0.0452 0.0050 0.0402 239 0.0449 0.0049 0.0400 240 0.0447 0.0049 0.0398 241 0.0444 0.0049 0.0395 242 0.0442 0.0049 0.0393 243 0.0439 0.0048 0.0391 244 0.0437 0.0048 0.0389 245 0.0435 0.0048 0.0387 246 0.0433 0.0048 0.0385 247 0.0430 0.0047 0.0383 248 0.0428 0.0047 0.0381 249 0.0426 0.0047 0.0379 250 0.0424 0.0047 0.0378 251 0.0422 0.0046 0.0376 252 0.0420 0.0046 0.0374 253 0.0418 0.0046 0.0372 254 0.0417 0.0046 0.0371 255 0.0415 0.0046 0.0369 256 0.0413 0.0045 0.0367 257 0.0411 0.0045 0.0366 258 0.0409 0.0045 0.0364 259 0.0408 0.0045 0.0363 260 0.0406 0.0045 0.0361 261 0.0404 0.0044 0.0360 262 0.0403 0.0044 0.0359 263 0.0401 0.0044 0.0357 264 0.0400 0.0044 0.0356 265 0.0398 0.0044 0.0354 266 0.0397 0.0044 0.0353 267 0.0395 0.0043 0.0352 268 0.0394 0.0043 0.0351 269 0.0393 0.0043 0.0349 270 0.0391 0.0043 0.0348 271 0.0390 0.0043 0.0347 272 0.0388 0.0043 0.0346 273 0.0387 0.0043 0.0345 274 0.0386 0.0042 0.0343 275 0.0385 0.0042 0.0342 276 0.0383 0.0042 0.0341 277 0.0382 0.0042 0.0340 278 0.0381 0.0042 0.0339 279 0.0380 0.0042 0.0338 F -1 09 280 281 282 283 284 285 286 287 288 0.0378 0.0377 0.0376 0.0375 0.0374 o . 0373 0.0372 0.0371 0.0370 0.0042 0.0042 0.0041 0.0041 0.0041 0.0041 0.0041 0.0041 0.0041 TOTAL STORM RAINFALL (INCHES) 14.55 TOTAL SOIL-LOSS (INCHES) = 1.55 TOTAL EFFECTIVE RAINFALL (INCHES) = 13.00 TOTAL SOIL-LOSS VOLUME(ACRE-FEET) = 766.5504 TOTAL STORM RUNOFF VOLUME (ACRE-FEET) = 6420.5244 F-l10 0.0337 0.0336 0.0335 0.0334 0.0333 0.0332 0.0331 0.0330 0.0329 ===========================================================================~ 2 4 - H 0 0 R S TOR M RUN 0 F F H Y 0 R 0 G RAP H =======================================================~~~~===============~~ HYDROGRAPH IN FIVE-MINUTE UNIT INTERVALS (CFS) (Note: Time indicated is at END of Each Unit Intervals) TIME (HRS) VOLUME (AF) Q(CFS} O. 2950.0 5900.0 8850.0 11800.0 0.083 0.1933 28.07 Q 0.167 0.8945 101. 81 Q 0.250 2.3678 213.93 Q 0.333 4.9312 372.21 VQ 0.417 9.3032 634.81 V Q 0.500 17.0972 1131.69 V Q 0.583 26.9267 1427.24 V Q 0.667 37.8802 1590.45 V Q 0.750 49.7093 1717.59 V Q 0.833 62.2696 1823.75 V Q 0.917 75.3919 1905.37 V Q 1. 000 89.0388 1981.52 V Q 1.083 103.1179 2044.29 V Q 1. 167 117.5691 2098.32 V Q 1. 250 132.3349 2143.99 V Q 1.333 147.3902 2186.03 V Q 1.417 162.6961 2222.42 .V Q 1.500 178.2225 2254.43 .V Q 1. 583 193.9311 2280.89 .V Q 1. 667 209.8026 2304.54 .V Q 1. 750 225.7938 2321. 92 .V Q 1. 833 241. 9046 2339.28 .V Q 1.917 258.1289 2355.77 .V Q 2.000 274.4096 2363.96 .V Q 2.083 290.7302 2369.75 .V Q 2.167 307.0918 2375.70 .V Q 2.250 323.4937 2381.56 . V Q 2.333 339.9370 2387.57 . V Q 2.417 356.4211 2393.49 V Q 2.500 372.9471 2399.57 V Q 2.583 389.5142 2405.54 V Q 2.667 406.1236 2411.69 V Q 2.750 422.7746 2417.72 V Q 2.833 439.4683 2423.93 V Q 2.917 456.2041 2430.03 V Q 3.000 472.9831 2436.31 V Q 3.083 489.8044 2442.46 V Q 3.167 506.6695 2448.81 V Q 3.250 523.5774 2455.03 V Q 3.333 540.5295 2461. 45 V Q 3.417 557.5252 2467.77 V Q 3.500 574.5656 2474.26 V Q 3.583 591.6498 2480.63 V Q 3.667 608.7793 2487.20 V Q 3.750 625.9454 2492.52 V Q F-l11 3.833 643.1421 2496.96 v Q. F~112 TIME(HRS) VOLUME (AF) Q (CFS) O. 2950.0 3.917 660.3685 2501.27 V Q 4.000 677 . 6260 2505.79 V Q 4.083 694.9137 2510.18 V Q . 4.167 712.2330 2514.77 V Q 4.250 729.5831 2519.23 V Q 4.333 746.9654 2523.90 V Q 4.417 764.3790 2528.45 V Q 4.500 781.8253 2533.20 V Q 4.583 799.3034 2537.82 V Q 4.667 816.8149 2542.66 V Q 4.750 834.3588 2547.37 V Q 4.833 851. 9365 2552.29 V Q 4.917 869.5472 2557.08 V Q 5.000 887.1925 2562.09 V Q 5.083 904.8714 2566.97 V Q 5.167 922.5854 2572.08 V Q 5.250 940.3337 2577.05 V Q 5.333 958.1179 2582.25 V Q 5.417 975.9368 2587.32 V Q . 5.500 993.7923 2592.61 V Q 5.583 1011.6833 2597.77 V Q 5.667 1029.6115 2603.17 V Q 5.750 1047.5759 2608.43 V Q 5.833 1065.5782 2613.94 V Q 5.917 1083.6174 2619.29 V Q 6.000 1101.6953 2624.90 V Q 6.083 1119.8108 2630.36 V Q 6.167 1137.9657 2636.10 VQ 6.250 1156.1591 2641. 68 vQ 6.333 11 7 4 . 3927 2647.52 VQ 6.417 1192.6655 2653.21 vQ 6.500 1210.9795 2659.18 V Q. 6.583 1229.3334 2664.99 V Q. 6.667 1247.7292 2671. 09 V Q. 6.750 1266.1660 2677.03 V Q. 6.833 1284.6458 2683.26 VQ. 6.917 1303.1672 2689.32 VQ. 7.000 1321.7325 2695.68 VQ. 7.083 1340.3406 2701. 88 VQ. 7.167 1358.9934 2708.39 vQ. 7.250 1377 . 6898 2714.72 VQ. 7.333 1396.4321 2721. 38 VQ. 7.417 1415.2190 2727.86 VQ. 7.500 1434.0529 2734.68 VQ. 7.583 1452.9323 2741.29 Q. 7.667 1471.8597 2748.27 Q. 7.750 1490.8339 2755.04 Q. 7.833 1509.8572 2762.19 Q. 7.917 1528.9283 2769.14 Q. 8.000 1548.0500 2776.46 Q. F-113 5900.0 8850.0 11800.0 ------------------------------------------~~---~-------------~---------~---- TIME {HRS} VOLUME (AF) Q(CFS) O. 2950.0 5900.0 8850.0 11800.0 ----------------~~-----------------------------------------~~--------------- 8.083 1567.2207 2783.58 Q. 8.167 1586.4430 2791. 08 Q. 8.250 1605.7155 2798.37 QV 8.333 1625.0409 2806.06 QV 8.417 1644.4180 2813.55 QV 8.500 1663.8494 2821. 44 QV 8.583 1683.3336 2829.12 QV 8.667 1702.8737 2837.22 QV 8.750 1722.4680 2845.11 QV 8.833 1742.1198 2853.42 QV 8.917 1761.8273 2861. 53 QV 9.000 1781.5936 2870.08 Q.V 9.083 1801. 4174 2878.40 Q.V 9.167 1821. 3016 2887.19 Q.V 9.250 1841. 2449 2895.76 Q.v 9.333 1861. 2505 2904.81 Q.V 9.417 1881.3168 2913.63 Q.V 9.500 1901.4473 2922.94 Q.V 9.583 1921. 6403 2932.02 Q.V 9.667 1941.8994 2941. 62 Q. V 9.750 1962.2230 2950.98 Q V 9.833 1982.6147 2960.88 Q V 9.917 2003.0730 2970.54 Q V 10.000 2023.6016 2980.75 Q V 10.083 2044.1989 2990.72 Q V 10.167 2064.8687 3001. 26 Q V 10.250 2085.6094 3011.56 Q V 10.333 2106.4250 3022.45 Q V 10.417 2127.3142 3033.10 Q V 10.500 2148.2810 3044.37 Q V 10.583 2169.3237 3055.39 Q V 10.667 2190.4468 3067.06 Q V 10.750 2211.6484 3078.48 Q V 10.833 2232.9333 3090.57 Q V 10.917 2254.2998 3102.41 Q V 11.000 2275.7527 3114.95 Q V 11. 083 2297.2900 3127.24 Q V 11.167 2318.9172 3140.27 Q V 11.250 2340.6323 3153.04 Q V 11.333 2362.4409 3166.59 Q V 11.417 2384.3408 3179.88 Q V 11.500 2406.3381 3193.99 Q V 11.583 2428.4307 3207.84 Q V 11 . 667 2450.6245 3222.55 Q V 11.750 2472.9177 3236.99 Q V 11.833 2495.3169 3252.35 .Q V 11.917 2517.8201 3267.45 .Q V 12.000 2540.4338 3283.52 .Q V 12.083 2563.1277 3295.16 .Q V 12.167 2585.8628 3301.12 .Q V F-114 -----------------------------------------------------------~--~~~-~--------- TIME (HRS) VOLUME (AF) Q(CFS) O. 2950.0 5900.0 8850.0 11800.0 ----------------------------------------------------------~--~~-----------~- 12.250 2608.5986 3301. 24 .Q V 12.333 2631.2969 3295.79 .Q V 12.417 2653.8513 3274.89 .Q V 12.500 2676.0339 3220.90 Q V 12.583 2698.0522 3197.07 Q V 12.667 2720.0544 3194.70 Q V 12.750 2742.0767 3197.61 Q V 12.833 2764.1521 3205.36 Q V 12.917 2786.3052 3216.63 Q V 13 . 000 2808.5540 3230.53 Q V 13.083 2830.9111 3246.26 .Q V 13 .167 2853.3992 3265.25 .Q V 13.250 2876.0254 3285.32 .Q V 13.333 2898.8081 3308.05 .Q V 13.417 2921. 7522 3331.47 .Q V 13 . 500 2944.8779 3357.86 .Q V 13.583 2968.1902 3384.95 .Q V 13.667 2991. 7095 3415.00 .Q V 13.750 3015.4417 3445.93 .Q V 13.833 3039.4062 3479.66 .Q V 13.917 3063.6042 3513.54 .Q V. 14.000 3088.0657 3551.78 Q V. 14.083 3112.8811 3603.19 Q V. 14 .167 3138.2153 3678.55 Q V. 14 .250 3164.1851 3770.80 Q V. 14.333 3190.9534 3886.76 Q V. 14.417 3218.8364 4048.63 Q V 14.500 3248.5769 4318.31 Q V 14.583 3279.5171 4492.53 Q V 14.667 3311.2463 4607.09 Q V 14.750 3343.6455 4704.38 Q V 14.833 3376.6670 4794.72 Q .V 14.917 3410.2329 4873.76 Q .V 15.000 3444.3508 4953.93 Q .V 15.083 3478.9827 5028.53 Q .V 15.167 3514.1328 5103.80 Q .V 15.250 3549.7839 5176.56 Q V 15.333 3585.9670 5253.77 Q V 15.417 3622.4397 5295.84 Q V 15.500 3658.8606 5288.30 Q V 15.583 3694.9399 5238.72 Q V 15.667 3730.4041 5149.38 Q V 15.750 3764.4856 4948.63 Q V 15.833 3795.4670 4498.51 Q V 15.917 3825.5610 4369.65 Q V 16.000 3856.7913 4534.62 Q V 16.083 3892.1130 5128.73 Q V 16. 167 3933.4792 6006.37 Q V 16.250 3980.7249 6860.08 QV 16.333 4035.3530 7932.01 VQ F-115 -------------~--------------------------------~----~-----------~--~~--------~ TIME(HRS) VOLUME (AF) Q(CFS) O. 2950.0 5900.0 8850.0 11800.0 --~-------------------------~--------------------------------~-~~----------- 16.417 4100.8755 9513.86 V Q 16.500 4181. 5742 11717.47 V Q. 16.583 4243.9561 9057.82 V Q 16.667 4293.4160 7181.58 Q V 16.750 4338.8628 6598.90 Q V 16.833 4384.2705 6593.23 Q V 16.917 4428.3740 6403.80 .Q V 17.000 4471.6973 6290.53 .Q V 17.083 4513.5405 6075.67 Q V 17.167 4554.0464 5881.46 Q. V 17.250 4593.0815 5667.92 Q. V 17.333 4630.9258 5494.97 Q V 17.417 4667.0850 5250.30 Q V. 17.500 4700.8413 4901.42 Q V. 17.583 4732.7104 4627.42 Q V. 17 . 667 4763.2788 4438.56 Q V. 17.750 4792.4824 4240.37 Q V. 17.833 4820.8071 4112.74 Q V 17.917 4848.2285 3981.60 Q V 18.000 4874.2715 3781. 45 . Q V 18.083 4899.5044 3663.81 . Q V 18.167 4924.2534 3593.57 . Q V 18.250 4948.6362 3540.39 Q V 18.333 4972.6768 3490.68 .Q V 18.417 4996.5083 3460.32 .Q .V 18.500 5020.4092 3470.43 .Q .V 18.583 5044.2168 3456.84 .Q .V 18.667 5067.8247 3427.87 .Q .V 18.750 5091.2329 3398.88 .Q .V 18.833 5114.4360 3369.11 .Q .V 18.917 5137.4233 3337.76 .Q V 19.000 5160.2280 3311.24 .Q V 19.083 5182.8647 3286.85 .Q V 19.167 5205.3438 3263.93 .Q V 19.250 5227.6641 3240.93 Q V 19.333 5249.8291 3218.35 Q V 19.417 5271.8379 3195.64 Q V 19.500 5293.6885 3172.70 Q V 19.583 5315.3730 3148.58 Q V 19.667 5336.8774 3122.42 Q V 19.750 5358.1177 3084.08 Q V 19.833 5379.1182 3049.24 Q V 19.917 5399.9731 3028.14 Q V 20.000 5420.6875 3007.73 Q V 20.083 5441.2578 2986.79 Q V 20.167 5461.6807 2965.41 Q V 20.250 5481.9614 2944.74 Q. V 20.333 5502.1045 2924.74 Q. V 20.417 5522.1138 2905.35 Q. V 20.500 5541. 9937 2886.53 Q. V F-116 ---~-~-----------------------------------~~~-~~~----~~-----------~-----~-~-~ TIME(HRS) VOLUME (AF) Q(CFSj O. 2950.0 5900.0 8850.0 11800.0 -------------------------~--------------------------------------------------- 20.583 5561. 7476 2868.24 Q. V 20.667 5581. 3789 2850.45 Q. V 20.750 5600.8945 2833.65 Q. V 20.833 5620.3008 2817.81 Q. V 20.917 5639.6011 2802.42 Q. V 21.000 5658.7983 2787.45 Q. V 21. 083 5677.8955 2772.91 Q. V 21.167 5696.8950 2758.75 Q. V 21. 250 5715.7998 2744.96 Q. V 21. 333 5734.6118 2731. 52 Q. V 21.417 5753.3335 2718.42 Q. V 21. 500 5771.9673 2705.63 Q. V 21.583 5790.5151 2693.15 Q. V 21. 667 5808.9790 2680.96 Q. V 21.750 5827.3599 2668.88 Q. V 21.833 5845.6582 2656.90 Q. V 21. 917 5863.8760 2645.19 Q V 22.000 5882.0146 2633.72 Q V 22.083 5900.0757 2622.48 Q V 22.167 5918.0610 2611.48 Q V 22.250 5935.9722 2600.70 Q V 22.333 5953.8105 2590.12 Q V 22.417 5971.5771 2579.74 Q V 22.500 5989.2739 2569.56 Q V 22.583 6006.9019 2559.56 Q V 22.667 6024.4619 2549.74 Q V 22.750 6041. 9556 2540.11 Q V 22.833 6059.3843 2530.64 Q V 22.917 6076.7490 2521. 33 Q V 23.000 6094.0508 2512.19 Q V 23.083 6111.2905 2503.22 Q V 23.167 6128.4697 2494.39 Q V 23.250 6145.5889 2485.69 Q V 23.333 6162.6489 2477.14 Q V 23.417 6179.6514 2468.73 Q V 23.500 6196.5967 2460.46 Q V 23.583 6213.4858 2452.32 Q V 23.667 6230.3198 2444.31 Q V 23.750 6247.0996 2436.42 Q V 23.833 6263.8257 2428.65 Q V. 23.917 6280.4995 2421.01 Q V. 24.000 6297.1211 2413.47 Q V. 24.083 6313.4985 2377.98 Q V. 24.167 6329.3188 2297.09 Q V. 24.250 6344.3208 2178.26 Q V. 24.333 6358.1904 2013.87 Q V. 24.417 6370.2153 1746.00 Q V. 24.500 6378.7910 1245.22 Q V. 24.583 6385.3179 947.67 Q V. 24.667 6390.7158 783.82 Q V. F-117 ~~~~~--~--~-~---~~~~~---~~---------------~--------------~---~--------------- TIME ( HRS ) VOLUME (AF) Q(CFS) O. 2950.0 5900.0 8850.0 11800.0 ------~-~--~---------~----------~-----------------------------~-~~~--------- 24.750 6395.2378 656.61 Q V. 24.833 6399.0332 551.06 .Q V. 24.917 6402.2729 470.41 .Q V. 25.000 6404.9980 395. 71 .Q V. 25.083 6407.3022 334.60 .Q V. 25.167 6409.2490 282.65 Q v. 25.250 6410.8960 239.16 Q V. 25.333 6412.2710 199.67 Q V. 25.417 6413.4131 165.85 Q V. 25.500 6414.3550 136.74 Q V. 25.583 6415.1343 113.17 Q v. 25.667 6415.7725 92.70 Q V. 25.750 6416.3130 78.46 Q v. 25.833 6416.7568 64. 47 Q V. 25.917 6417.1104 51. 31 Q v. 26.000 6417.4316 46.64 Q v. 26.083 6417.7368 44.28 Q V. 26.167 6418.0259 41.94 Q V. 26.250 6418.2988 39.60 Q V. 26.333 6418.5557 37.28 Q V. 26.417 6418.7964 34.96 Q v. 26.500 6419.0210 32.65 Q v. 26.583 6419.2300 30.34 Q V. 26.667 6419.4233 28.05 Q V. 26.750 6419.6006 25.76 Q V. 26.833 6419.7622 23.47 Q V. 26.917 6419.9082 21. 20 Q V. 27.000 6420.0386 18.94 Q v. 27.083 6420.1533 16.68 Q V. 27.167 6420.2529 14.43 Q v. 27.250 6420.3369 12.19 Q V. 27.333 6420.4053 9.95 Q V. 27.417 6420.4585 7.72 Q V. 27.500 6420.4966 5.50 Q v. 27.583 6420.5190 3.28 Q V. 27.667 6420.5264 1. 07 Q V ---~------------------------------------------------------------------------ -~-~.~---------~--~---~---------------- -------~------ ---------------------~-- END OF FLOODSCx ROUTING ANALYSIS F-118