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Home My WebLink AboutDrainage Study Jan. 2, 20010 TRACT MAP 291333 DRAINAGE STUDY January 5, 2001 Updated 6/24/02 Prepared For: Michael Lanni P.O. Box 7284 Newport Beach, CA 92660 Prepared By: HLC 43533 Ridge Park Dr., Suite B Temecula, CA 92590 (909)506-4869 By: �.. �3 Hector VyCorrea, RCE 3 STAMP �oQ�kOEESS/p;Al HECTOR F2 LUCID CORREA Z w No. 36306 T �pf CIVIL ENGINEERING Q ` �F CANE EXPIRES 6/30/04 0 TABLE OF CONTENTS SUBJECT DRAINAGE STUDY REPORT 100 YEAR DEVELOPED CONDITION 100 YEAR EXISTING CONDITION PAGE 3 STORM DRAIN HYDRAULIC CALCULATION 6 HYDROLOGY EXHIBIT MAP 10 0 • TENTATIVE TRACT MAP 29133 DRAINAGE STUDY STUDY AREA The subject property consists of approximately 4.8 acres, located on the easterly side of Ynez Road 707 feet south of Pauba Road. The site is protected from off-site storm runoff by Tract No. 15730 subdivision street and storm drain system. See Exhibit "A" for drainage boundary and estimated 10/100 -year storm runoff. HYDROLOGY The developments will not change existing drainage patterns and will only increase the existing 100 -year storm from 7.6 cfs to 12.2 cfs. EXISTING DRAINAGE IMPROVEMENTS There is an existing 30 -inch storm drain outlet that discharges approximately 83 cfs during the 100 -year storm at the northwesterly corner of the property. The existing 30 -inch storm drains has an energy dissipator that reduces flow prior to out letting into an earthen channel located along the westerly boundary of the subject property. PROPOSED DRAINAGE IMPROVEMENTS The developed storm runoff will be discharged into a proposed 30 -inch storm drain that will connect to the existing 30 -inch storm drain described above. The extended 30 -inch storm drain will outlet at the southwesterly property corner into the existing earthen channel. The proposed storm drain outlet will include an impact energy dissipator similar to the existing upstream dissipator to mitigate any possible erosion to the existing earthen channel. The existing earthen channel southerly of the outlet will continue under present conditions to conveys storm flows to an existing 42 -inch storm drain at Preece Lane (Tract No. 20643). 0 • 100 YEAR DEVELOPED CONDITION RATIONAL METHOD HYDROLOGY COMPUTER PROGRAM BASED ON RIVERSIDE COUNTY FLOOD CONTROL E WATER CONSERVATION DISTRICT (RCFC&WCD) 1978 HYDROLOGY MANUAL (C) Copyright 1982,1986 Advanced Engineering Software [AES) Especially prepared for: NBS/LOWERY ENGINEERS s PLANNERS **********DESCRIPTION OF RESULTS***x+*x**+*+++++++++++++++++++++++x+**++x*** LANNI x+*x+*x+*+*xx*xx*x+xx*x+xx**x*xxxxxxxxxxx***+++x*****x*+++++++++++++++++++++ ---------------------------------------------------------------------------- USER SPECIFIED HYDROLOGY AND HYDRAULIC MODEL INFORMATION ____________________________________________________________________________ USER SPECIFIED STORM EVENT(YEAR) = 100.00 SPECIFIED MINIMUM PIPE SIZE(INCH) = 12.00 SPECIFIED PERCENT OF GRADIENTS(DECIMAL) TO USE FOR FRICTION SLOPE _ .90 10 -YEAR STORM 10 -MINUTE INTENSITY(INCH/HOUR) = 2.360 10 -YEAR STORM 60 -MINUTE INTENSITY(INCH/HOUR) = .880 100 -YEAR STORM 10 -MINUTE INTENSITY(INCH/HOUR) = 3.480 100 -YEAR STORM 60 -MINUTE INTENSITY(INCH/HOUR) = 1.300 SLOPE OF 10 -YEAR INTENSITY -DURATION CURVE _ .5505732 SLOPE OF 100 -YEAR INTENSITY -DURATION CURVE _ .5495536 COMPUTED RAINFALL INTENSITY DATA: STORM EVENT = 100.00 1 -HOUR INTENSITY(INCH/HOUR) = 1.3000 SLOPE OF INTENSITY DURATION CURVE _ .5496 RCFCSWCD HYDROLOGY MANUAL "C" -VALUES USED Advanced Engineering Software [AES] SERIAL No. I00971 VER. 3.3C RELEASE DATE: 2/20/86 +++****++**x*+***x**+*x+*++++++x+xx++++++++*++****+**+*x+*x+xx**++++++++++x* FLOW PROCESS FROM NODE 1.00 TO NODE 2.00 IS CODE = 2 ____________________________________________________________________________ »»>RATIONAL METHOD INITIAL SUBAREA ANALYSIS««< ___________________________________________________________ ASSUMED INITIAL SUBAREA UNIFORM DEVELOPMENT IS SINGLE FAMILY(1/2 ACRE) TC = K*[(LENGTH**3)/(ELEVATION CHANGE)]**.2 INITIAL SUBAREA FLOW -LENGTH = 900.00 UPSTREAM ELEVATION = 1176.00 DOWNSTREAM ELEVATION = 1075.00 ELEVATION DIFFERENCE = 101.00 TC = .422*[( 900.00**3)/( 101.00)]**.2 = 9.933 100.00 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.493 SOIL CLASSIFICATION IS "B" SINGLE-FAMILY(1/2 ACRE LOT) RUNOFF COEFFICIENT = .7754 SUBAREA RUNOFF(CFS) = 12.21 TOTAL AREA(ACRES) - 4.51 TOTAL RUNOFF(CFS) = 12.21 +**+x***********.***+*******+******+****.*********x**x*x****++*++**+*x****** _ Z _ 0 0 FLOW PROCESS FROM NODE 2.00 TO NODE 3.00 IS CODE = 4 --------------------------------------------------------------------- »»>COMPUTE PIPEFLOW TRAVELTIME THRU SUBAREA««< »»>USING USER-SPECIFIED PIPESIZE««< DEPTH OF FLOW IN 36.0 INCH PIPE IS 11.9 INCHES PIPEFLOW VELOCITY(FEET/SEC.) = 6.0 UPSTREAM NODE ELEVATION = 1059.00 DOWNSTREAM NODE ELEVATION = 1057.00 FLOWLENGTH(FEET) = 300.00 MANNINGS N = .013 GIVEN PIPE DIAMETER(INCH) = 36.00 NUMBER OF PIPES = 1 PIPEFLOW THRU SUBAREA(CFS) = 12.21 TRAVEL TIME(MIN.) _ .84 TC(MIN.) = 10.77 .....+.....+.t++.++++.+ .................+.+..+........ x............ x.... x++. FLOW PROCESS FROM NODE 2.00 TO NODE 3.00 IS CODE = 8 ---------------------------------------------------------------------------- »»>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW«G« 100.00 YEAR RAINFALL INTENSITY(INCH/HOUR) = 3.341 SOIL CLASSIFICATION IS "B" SINGLE-FAMILY(1-ACRE LOT) RUNOFF COEFFICIENT = .7281 SUBAREA AREA(ACRES) _ .91 SUBAREA RUNOFF(CFS) = 2.21 TOTAL AREA(ACRES) = 5.42 TOTAL RUNOFF(CFS) = 14.43 TC(MIN) = 10.77 END OF RATIONAL METHOD ANALYSIS -3- 0 • STORM DRAIN HYDRAULIC CALCULATION HYDRAULIC CALCULATION MAIN LINE TR29133 STORM DRAIN ANALYSIS PLUS Original version by Los Angeles County Public Works Portions Copyrighted by CIVILSOFT, 1986, 1987, 1969 Version DDDDO Serial Number DDDDODDO May 25, 2002 11:41: 6 Input file : LANNI.SP Output file: LANNI.OUT INPUT FILE LISTING • T1 TR 29133 T2 LANNI TR 29133 T3 LANNI.SP SO 5900.641057.62 1 .013 1060.62 R 6184.671059.03 1 .013 ix 6188.671059.13 2 3 .013 12.2 1060.00 60.0 R 6250.001064.47 2 .013 R 6358.701068.42 2 .013 R 6492.981073.52 2 .013 SH 2 1 SP WATER SURFACE PROFILE - CHANNEL DEFINITION LISTING PAGE 1 0 CARD SECT CHN NO OF AVE PIER HEIGHT 1 BASE ZL ZR INV Y(1) Y(2) Y(3) Y(4) Y(5) Y(6) Y(7) Y(8) Y(9) Y(10) CODE NO TYPE PIERS WIDTH DIAMETER WIDTH DROP CD 1 4 3.00 CD 2 4 2.50 CD 3 4 1.50 1 PAGE NO 1 0 WATER SURFACE PROFILE - TITLE CARD LISTING OHEADING LINE NO 1 IS - • 0 TR 29133 OHEADING LINE NO 2 IS - 0 LANNI TR 29133 OHEADING LINE NO 3 IS - 0 LANNI.SP 7 PAGE NO 2 0 WATER SURFACE PROFILE - ELEMENT CARD LISTING 0 ELEMENT NO 1 IS A SYSTEM OUTLET ` w U/S DATA STATION INVERT SECT W S ELEV 5900.64 1057.62 1 1060.62 0 ELEMENT NO 2 IS A REACH w w U/S DATA STATION INVERT SECT N RADIUS ANGLE ANG PT MAN H 6184.67 1059.03 1 .013 .00 .00 .00 0 -5- HYDRAULIC CALCULATION 0 ELEMENT NO 3 IS A JUNCTION U/S DATA STATION INVERT SECT LAT -1 LAT -2 N Q3 Q4 INVERT -3 INVERT -4 PHI 3 PHI 4 6188.67 1059.13 2 3 0 .013 12.2 .0 1060.00 .00 60.00 .00 0 ELEMENT NO 4 IS A REACH U/S DATA STATION INVERT SECT N RADIUS ANGLE ANG PT MAN H 6250.00 1064.47 2 .013 .00 .00 .00 0 0 ELEMENT NO 5 IS A REACH U/S DATA STATION INVERT SECT N RADIUS ANGLE ANG PT MAN H 6358.70 1068.42 2 .013 .00 .00 .00 0 0 ELEMENT NO 6 IS A REACH U/S DATA STATION INVERT SECT N RADIUS ANGLE ANG PT MAN H 6492.98 1073.52 2 .013 .00 .00 .00 0 0 ELEMENT NO 7 IS A SYSTEM HEADWORKS * ' U/S DATA STATION INVERT SECT W S ELEV 6492.98 1073.52 2 .00 NO EDIT ERRORS ENCOUNTERED -COMPUTATION IS NOW BEGINNING • ** WARNING NO. 2 " - WATER SURFACE ELEVATION GIVEN IS LESS THAN OR EQUALS INVERT ELEVATION IN HDWKDS, W.S.ELEV = INV + DC ** WARNING NO. 11 ** - THE VALUE TO SOLVE FOR DEPTH IN BERNLI IS NOT BETWEEN THE UPPER AND LOWER VALUE LIMITS DESIRED VALUE _ .91359E+01 UPPER LIMIT VALUE _ .89999E+01 LOWER LIMIT VALUE _ .90731E+01 UPPER LIMIT DEPTH = .24700E+01 LOWER LIMIT DEPTH = .22941E+01 OBERNLI SUBROUTINE PAR.NO. FACTF DF DNORM CONSTF D(1) CONST(1) D(2) CONST(2) 903 -1.0 2.294 2.470 9.136 2.294 9.073 2.470 9.000 1 PAGE 1 WATER SURFACE PROFILE LISTING TR 29133 LANNI TR 29133 LANNI.SP 0 STATION INVERT DEPTH W.S. Q VEL VEL ENERGY SUPER CRITICAL HGT/ BASE/ ZL NO AVBPR ELEV OF FLOW ELEV HEAD GRD.EL. ELEV DEPTH DIA ID NO. PIER 0 L/ELEM SO SF AVE HF NORM DEPTH ZR 0 5900.64 1057.62 3.00 1060.62 95.4 13.50 2.83 1063.45 .00 2.88 3.00 .00 .00 0 .00 0 284.03 .00496 .02046 5.81 3.00 .00 0 6184.67 1059.03 7.40 1066.43 95.4 13.50 2.83 1069.26 .00 2.88 3.00 .00 .00 0 .00 OJUNCT SIR .02499 .03080 .12 .00 0 6188.67 1059.13 6.57 1065.70 83.2 16.95 4.46 1070.16 .00 2.47 2.50 .00 .00 0 .00 0 61.33 .08707 .04114 2.52 1.52 .00 • 0 6250.00 1064.47 3.75 1068.22 83.2 16.95 4.46 1072.69 .00 2.47 2.50 .00 .00 0 .00 0 108.70 .03634 .04114 4.47 2.24 .00 0 6358.70 1068.42 4.27 1072.69 83.2 16.95 4.46 1077.16 .00 2.47 2.50 .00 .00 0 .00 0 134.26 .03798 .04114 5.52 2.15 .00 0 6492.98 1073.52 4.70 1078.22 83.2 16.95 4.46 1082.68 .00 2.47 2.50 .00 .00 0 .00 1 11roll HYDRAULIC CALCULATION 1899 LATERAL TM9133 STORM DRAIN ANALYSIS PLUS Original version by Los Angeles County Public Works Portions Copyrighted by CIVILSOFT, 1986, 1987, 1989 Version D000D Serial Number OD000000 Jun 19, 2002 8:35:59 Input file : 18LAT.SP Output file: 18LAT.OUT T1 LATERAL TR29133 T2 FILE: 18LAT.SP T3 HLC 6/19/02 SO 000.001059.50 2 .013 1065.7 • R 13.371060.55 2 .013 SH 2 1 SP WATER SURFACE PROFILE - CHANNEL DEFINITION LISTING PAGE 1 0 CARD SECT CHN NO OF AVE PIER HEIGHT 1 BASE ZL ZR INV Y(1) Y(2) Y(3) Y(9) Y(5) Y(6) Y(7) Y(8) Y(9) Y(10) CODE NO TYPE PIERS WIDTH DIAMETER WIDTH DROP CD 1 9 2.00 CD 2 9 1.50 CD 3 9 9.00 1 PAGE NO 1 0 WATER SURFACE PROFILE - TITLE CARD LISTING OHEADING LINE NO 1 IS - 0 LATERAL TR29133 OHEADING LINE NO 2 IS - 0 FILE: 18LAT.SP OHEADING LINE NO 3 IS - 0 HLC 6/19/02 1 PAGE NO 2 0 WATER SURFACE PROFILE - ELEMENT CARD LISTING 0 ELEMENT NO 1 IS A SYSTEM OUTLET * * * U/S DATA STATION INVERT SECT W S ELEV • .00 1059.50 2 1065.70 0 ELEMENT NO 2 IS A REACH U/S DATA STATION INVERT SECT N RADIUS ANGLE ANG PT MAN H 13.37 1060.55 2 .013 .00 .00 .00 0 0 ELEMENT NO 3 IS A SYSTEM HEADWORKS U/S DATA STATION INVERT SECT W S ELEV 13.37 1060.55 2 .00 NO EDIT ERRORS ENCOUNTERED -COMPUTATION IS NOW BEGINNING ** WARNING NO. 2 ** - WATER SURFACE ELEVATION GIVEN IS LESS THAN OR EQUALS INVERT ELEVATION IN HDWKDS, W.S.ELEV = INV + DC PAGE 1 WATER SURFACE PROFILE LISTING LATERAL TR29133 - 7 - HYDRAULIC CALCULATION FILE: 18LAT.SP HLC 6/19/02 0 STATION INVERT DEPTH W.S. Q VEL VEL ENERGY SUPER CRITICAL MGT/ BASE/ ZL NO AVBPR ELEV OF FLOW ELEV HEAD GRD.EL. ELEV DEPTH DIA ID NO. PIER 0 L/ELEM SO SF AVE HF NORM DEPTH ZR x+#++4++#+#+++«+1h+hrt+hxxRRxirtRxxlf hrt hxhh Y++1Rh+#++hh#rth#+x+xih##xxRh++#xxxYxf+h#hh4#+RhfxlhlRRxRrt+rtxxxx+f +Rxfh+h#hxx+#++hxx++#;++# 0 .00 1059.50 6.20 1065.70 12.2 6.90 .74 1066.44 .00 1.32 1.50 .00 .00 0 .00 0 13.37 .07854 .01349 .18 .67 .00 0 13.37 1060.55 5.33 1065.88 12.2 6.90 .74 1066.62 .00 1.32 1.50 .00 .00 0 .00 1 WATER SURFACE PROFILE LISTING TR29133 YNEZ ROAD 1-5-00 - FILE:29133.SP STORM DRAIN IMPROVEMENTS LANNI-CITY OF TEMECULA 0 STATION INVERT DEPTH W.S. Q VEL VEL ENERGY SUPER CRITICAL HGT/ BASE/ ZL NO AVBPR ELEV OF FLOW ELEV HEAD GRD.EL. ELEV DEPTH DIA ID NO. PIER • 0 L/ELEM SO SF AVE HF NORM DEPTH ZR iMhYxhxR*RRtYt4t##4##4#hR#++t4+fY+4++4RR4YYrtlRhli4#RRf#4hxkk xl h4lk#k*hRR###;*hR4;kxRx;#+#xRRh+##hRRh*k*Rxx1#4#;xRfk##+#*k#+##h###** 0 6080.78 1160.90 1.61 1162.51 95.4 14.85 3.43 1165.93 .00 2.61 4.00 4.00 .00 0 .00 0 10.00 .01000 .02024 .20 2.06 .00 0 6090.78 1161.00 1.58 1162.58 95.4 15.14 3.56 1166.14 .00 2.61 4.00 4.00 .00 0 .00 0 WALL EXIT .00 0 6090.78 1161.00 2.88 1163.88 95.4 13.69 2.91 1166.79 .00 2.88 3.00 .00 .00 0 .00 0 4.69 .00990 .01897 .09 3.00 .00 0 6095.47 1161.05 3.00 1164.05 95.4 13.50 2.83 1166.88 .00 2.88 3.00 .00 .00 0 .00 0 30.65 .00990 .02030 .62 3.00 .00 0 6126.12 1161.35 3.70 1165.05 95.4 13.50 2.83 1167.88 .00 2.88 3.00 .00 .00 0 .00 0 .00 .00990 .02046 .00 3.00 .00 0 6126.12 1161.35 3.70 1165.05 95.4 13.50 2.83 1167.88 .00 2.88 3.00 .00 .00 0 .00 0 6.56 .00915 .02046 .13 3.00 .00 0 6132.68 1161.41 3.77 1165.18 95.4 13.50 2.83 1168.01 .00 2.8B 3.00 .00 .00 0 .00 0 35.34 .00990 .02046 .72 3.00 .00 0 6168.02 1161.76 4.54 1166.30 95.4 13.50 2.83 1169.13 .00 2.86 3.00 .00 .00 0 .00 0 16.65 .01321 .02046 .34 3.00 .00 0 6184.67 1161.98 4.66 1166.64 95.4 13.50 2.83 1169.47 .00 2.68 3.00 .00 .00 0 .00 OJUNCT STR .06751 .03080 .12 .00 0 6188.67 1162.25 3.57 1165.82 83.2 16.95 4.46 1170.29 .00 2.47 2.50 .00 .00 0 .00 0 170.03 .03629 .04114 7.00 2.24 .00 • 0 6358.70 1168.42 4.40 1172.82 83.2 16.95 4.46 1177.28 .00 2.47 2.50 .00 .00 0 .00 0 134.28 .03582 .04114 5.52 2.28 .00 0 6492.98 1173.23 5.11 1178.34 83.2 16.95 4.46 1182.81 .00 2.47 2.50 .00 .00 0 .00 0 • HYDROLOGY MAP m 0 i E RECEIVED MAR 0 4 2003 CITY OF TEMECULA