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05-1424 (SFD) Hydrology CalcsHYDROLOGY CALCULATIONS FOR TRACT 26524, LOT 18.. THE ESTANCIAS PREPARED BY: PETER G. RINGEIS DATED: MAY, 2004 WY OF A OUIN, A $UIMINQ & SAFO Y DEP?. APPROVED nR CONST� arFolcg- TRI, STATE LAND SURVEYORS & CIVIL ENGINEERS 60 NO. 13515 EXP .3-3!-U CIVIL AL )�t'6 pu';X� gi26/o4 78-120 CALLE ESTADO, SUITE 102, LA QUINTA, CALIFORNIA (760) 564-0271 INFORMATION- ONLY i told COM-Limain.i V bs ':D oniraxwe D'" br clul. 0 E ry mv TRI-STATE Land Surveyors & Civil Engineers 78-120 Calle Estado Suite 102 La Quinta, California 92253 (760) 564-0271 FAX (760) 564.0279 JOB Lc�-I- I� TRACT Nv 2G 524 SHEET NO. �IOF % CALCULATED BY 1' 1 W C'I C- t5 DATE F_ z 6— O 4 - CHECKED BY -c61 F DATE + OOt.Cs KU I IS14V Sws: 2f6-1 ID�I ...... .... ..... ...... ..... .... ...... ..... ..... _ ...... _........-........ _ ..... (-C1511DC�JTI AL - 2 Ac .. x-07 .... ............................. 5 TU 2M W Al CR TU B� . 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RINGEIS 5 6 PROJECT NAME LOT 18 TRACT NO. 26524 7 JOB NO. 8 9 CONCENTRATION POINT DESIGNATION FRONT YARD 10 AREA DESIGNATION 11 12 TRIBUTARY AREAS ACRES 13 14 COMMERCIAL 15 PAVING/HARDSCAPE 0.06 16 SF - 1 ACRE 17 SF - 1/2 ACRE 0.29 18 SF - 1/4 ACRE 19 MF - CONDOMINIUMS 20 MF -APARTMENTS 21 MOBILE HOME PARK 22 LANDSCAPING 23 RETENTION BASIN 24 GOLF COURSE 25 MOUNTAINOUS 26 LOW LOSS RATE (PERCENT) 90% 27 28 LENGTH OF WATERCOURSE (L) 70 29 LENGTH TO POINT OPPOSITE CENTROID (Lca) 35 30 31 ELEVATION OF HEADWATER 44.16 32 ELEVATION OF CONCENTRATION POINT 43 33 34 AVERAGE MANN INGS 'N' VALUE 0.015 35 36 STORM FREQUENCY (YEAR) 100 37 38 POINT RAIN 39 3 -HOUR 2 40 6 -HOUR 2.5 41 24-HOUR 4.5 42 43 BASIN CHARACTERISTICS: ELEVATION AREA 44 43 1205' 45 42 430 46 47 48 49 50 51 52 PERCOLATION RATE (in/hr) 1 53 54 DRYWELL DATA 55 NUMBER USED 56 PERCOLATION RATE cfs 0 s r+r, 4 RCFCD SYNTHETIC UNIT HYDROGRAPH METHOD PROJECT: BASIC DATA CALCULATION FORM JOB NO. SHORTCUT METHOD BY LOT 18 TRACT NO. 26524 0 P. RINGEIS DATE 5/26/04 3 -HOUR 6 -HOUR PHYSICAL DATA EFFECTIVE RAIN (in) 0.87 0.80 (11 CONCENTRATION POINT FLOOD VOLUME (cu -ft) (acre -ft) 1,112 0.03 FRONT YARD 978 0.02 2 AREA DESIGNATION 881 0.02 703 0.02 0 PEAK FLOW (cfs) J31 AREA - ACRES 0.45 0.09 0.350 4 L -FEET 70 5 L -MILES 0.013 6 La -FEET 35.00 7 La -MILES 0.007 [81 ELEVATION OF HEADWATER 44.16 9 ELEVATION OF CONCENTRATION POINT 43 70 H -FEET 1.16 (ill S-FEET/MILE 87.5 [121 S^O.5 9.35 13 L'LCA/S^0.5 0.000 [141 AVERAGE MANNINGS'N' 0.015 1151 LAG TIME -HOURS 0.00 16 LAG TIME -MINUTES 0.3 [171100% OF LAG -MINUTES 0.3 18 200% OF LAG -MINUTES 0.5 (191 UNIT TIME -MINUTES 100%-200% OF LAG 5 (24] TOTAL PERCOLATION RATE (cfs) 0.03 RAINFALL DATA (t) SOURCE (2) FREQUENCY -YEARS 100 [31 DURATION: 3 -HOURS 6 -HOURS 24 -HOURS (4) POINT RAIN INCHES Plate E-5.2 [5] [6) [7] AREA AVERAGE POINT RAIN INCHES 181 POINT RAIN INCHES Plate E-5.4 (9) [10] AREA (11) AVERAGE POINT RAIN INCHES (12) [13] (14) POINT AREA RAIN INCHES Plate E-5.6 [15) AVERAGE POINT RAIN INCHES 2.00 0.350 1.00 2.00 2.50 0.350 1.00 2.50 4.50 0.350 1.00 4.50 0.00 0.00 0.00 0.00 1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 SUM (5) 0.35 SUM (7) 2.00 (16) AREA ADJ FACTOR 1.000 (17] ADJ AVG POINT RAIN 2.00 SUM (9) 1 0.35 SUM It 1) 2.50 1.000 2.50 SUM [13] 1 0.35 SUM (15) 4.50 1.000 4.50 STORM EVENT SUMMARY DURATION 3 -HOUR 6 -HOUR 24-HOUR EFFECTIVE RAIN (in) 0.87 0.80 0.77 FLOOD VOLUME (cu -ft) (acre -ft) 1,112 0.03 1,018 0.02 978 0.02 REQUIRED STORAGE (cu -ft) (acre -ft) 881 0.02 703 0.02 265 0.0le1 PEAK FLOW (cfs) 0.55 0.45 0.09 MAXIMUM WSEL (ft) Plate E-2.1 Page 1 of 1 A B C D 1 RCFCD SYNTHETIC UNIT HYDROGRAPH 2 DATA INPUT SHEET 3 4 WORKSHEET PREPARED BY: P. RINGEIS 5 6 PROJECT NAME LOT 18 TRACT NO. 26524 7 JOB NO. 8 9 CONCENTRATION POINT DESIGNATION REAR YARD 10 AREA DESIGNATION 11 12 TRIBUTARY AREAS ACRES 13 14 COMMERCIAL 15 PAVING/HARDSCAPE 16 SF - 1 ACRE 17 ISF - 1/2 ACRE 0.46 18 SF - 1/4 ACRE 19 MF - CONDOMINIUMS 20 MF -APARTMENTS 21 MOBILE HOME PARK 22 LANDSCAPING 23 RETENTION BASIN 24 GOLF COURSE 25 MOUNTAINOUS 26 LOW LOSS RATE (PERCENT) 90% 27 28 LENGTH OF WATERCOURSE (L) 100 29 LENGTH TO POINT OPPOSITE CENTROID (Lca) 50 30 31 ELEVATION OF HEADWATER 44.16 32 ELEVATION OF CONCENTRATION POINT 41 33 34 AVERAGE MANNINGS'N' VALUE 0.015 35 36 STORM FREQUENCY (YEAR) 100 37 38 POINT RAIN 39 3 -HOUR 2 40 6 -HOUR 2.5 41 24-HOUR 4.5 42 43 BASIN CHARACTERISTICS: ELEVATION AREA 44 42 6500 45 41 1470 46 47 48 49 50 51 52 PERCOLATION RATE (in/hr) 1 53 54 DRYWELL DATA 55 NUMBER USED 56 PERCOLATION RATE cfs 0 5HT-, (---, RCFCD SYNTHETIC UNIT HYDROGRAPH METHOD PROJECT: BASIC DATA CALCULATION FORM JOB NO. SHORTCUT METHOD BY LOT 18 TRACT NO. 26524 0 P. RINGEIS DATE 5/26/04 DURATION 3 -HOUR PHYSICAL DATA 24-HOUR EFFECTIVE RAIN (in) 0.75 t CONCENTRATION POINT 0.54 FLOOD VOLUME (cu -ft) (acre -ft) REAR YARD 1.124 0.03 [21 AREA DESIGNATION REQUIRED STORAGE (cu -ft) (acre -ft) 569 4,0.01 0 0.00 3 AREA - ACRES 0.68 0.55 0.460 MAXIMUM WSEL (ft) 4 L -FEET 100 5 L -MILES 0.019 6 La -FEET 50.00 7 La -MILES 0.009 8 ELEVATION OF HEADWATER 44.16 9 ELEVATION OF CONCENTRATION POINT 41 10 H -FEET 3.16 t 1 S-FEET/MILE 166.8 (121S-0.5 12.92 (131 L'LCA/S^0.5 0.000 (141 AVERAGE-MANNINGS'N' 0.015 (151 LAG TIME -HOURS 0.01 (161 LAG TIME -MINUTES 0.3 [171100% OF LAG -MINUTES 0.3 [181200% OF LAG -MINUTES 0.6 [191 UNIT TIME -MINUTES 100%-200% OF LAG 5 (24] TOTAL PERCOLATION RATE (cfs) 0.15 RAINFALL DATA (t) SOURCE (2) FREQUENCY -YEARS 100 (3) DURATION: 3 -HOURS 6 -HOURS 24 -HOURS (4] (5) (6) (7) POINT AREA AVERAGE RAIN POINT INCHES RAIN Plate E-5.2 INCHES (8) POINT RAIN INCHES Plate E-5.4 (9) [10] AREA (11] AVERAGE POINT RAIN INCHES (12] POINT RAIN INCHES Plate E-5.6 [13] AREA (14) [15] AVERAGE POINT RAIN INCHES 2.00 0.460 1.00 2.00 2.50 0.460 1.00 2.50 4.50 0.460 1.00 4.50 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 SUM [5] 0.46 SUM (7) 2.00 It 6) AREA ADJ FACTOR 1.000 (17 ADJ AVG POINT RAIN 2.00 SUM (9) 0.46 SUM [11) 2.50 1.000 2.50 SUM (13] 0.46 SUM [15) 4.50 1.000 4.50 STORM EVENT SUMMARY DURATION 3 -HOUR 6 -HOUR 24-HOUR EFFECTIVE RAIN (in) 0.75 0.67 0.54 FLOOD VOLUME (cu -ft) (acre -ft) 1,252 0.03 1.124 0.03 900 0.02 REQUIRED STORAGE (cu -ft) (acre -ft) 569 4,0.01 LO 366 0.00 PEAK FLOW (cfs) 0.68 0.55 0.09 MAXIMUM WSEL (ft) a Plate E•2.1 Page 1 of 1