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31681 (5)a ANDALUSIA AT CORAL MOUNTAIN MADISON STREET AVENUE 60 TO AVENUE 58 CATCH BASIN CALCULATIONS PLAN REVISION NO. 2 AUGUST 27, 2013 PREPARED FOR: T. D. DESERT DEVELOPMENT 81-570 CARBONERAS LA QUINTA, CA..92253 760-77771776 PREPARED BY. WATSON ENGINEERING 50200 MONROE STREET -INDIO, CA 92201 760-275-1553 '3 (o<6 Trr) E S/ co 1 cr) I 26662 EXP 3 31 -14 Clvl\l CALF` IN THE CITY OF LA QUINTA, COUNTY OF RIVERSIDE, STATE OF CALIFORNIA MADISON STREET CATCH BASIN NO.4 BEING IN THE NW & SW 1/4 OF SECTION 27, T.6.S., R.7.E., S.B.M. LEGEND: ® INDICATES DRAINAGE AREA A1--'' 1.92 AC: i �= AVENUE 58 STA 64 +90.00 HIGH POINT T.C. 453.27 A2 --� 3.72 AC, �Q NO \ 2 NPA I I C.B. #4 T.C. 441.91 1 A3 0.81 AC., STA 40 +00.00 HIGH POINT T.C. 448.18 SEE SHEET -2 C 0 300 450 000 900 1500 SCALE: 1" = 300' (IN FEET (11 i IQ(( -( _J SHEET 1 OF 2 SHEETS IN THE CITY OF LA QUINTA, COUNTY OF RIVERSIDE, STATE OF CALIFORNIA MADISON STREET CATCH BASIN NO.3 BEING IN THE NW & SW 1/4 OF SECTION 27, T.6.S., R.7.E., S.B.M. LEGEND: ® INDICATES DRAINAGE AREA _ BEE SHEET] I STA 40 +00•.00 HIGH POINT T.C. 448.18 131 1.13 AC. STA 34 +65.00 LOW POINT C.B. #3 T.C. 440.65 / Al o � B2 1 2.78 AC. -------- - 14 ii STA 10 +50.83 IIJ HIGH POINT T- C'•46G57 �' 0 300 450 600 900 SCALE: 1" = 300' (IN FEET) 1 1500 (cc: ZZ, SHEET 2 OF 2 SHEETS R C F C Bi W C D HYDROLOGY ,N ANUAL RATIONAL METHOD CALCULATION FORM PROJECT %%Et0115921 57" C -T�. ` 5714 4-1 +e,4>, ov FREQUENCY c �� Sheet No.— of —Shoots Calculated by _Lw� . _ _ $� 43. Checked by DRAINAGE AREA .. ra Tc' LIMITATIONS: 100 I. Maximum length =1000' Tc 1000 2. Maximum area = 10 Acres 5 • gp 80 a m J � c i2 21 cg II 0 150 9 .� 8 r 7 6 100 5 4 RCFC 15.WCD HYDROLOGY MANUAL,: 6 w 0 25 KEY L--H -Tc - K--Tc' o 30 0 EXAMPLE; E E_ (1) L= 550',,H =•5.0, K= Single Family(1 /4Ac.) 35 Development , Tc =12.6 min. (2) L =550', H =5.0% K = Commercial 40 Development, Tc = 9.7 min. . Reference: Bibliography item No. 35. PLATE D -3 1 I 800 70 .-. $ U H 500 6 9 v 400 Q 700 60 c° 8 • O V 200 7 ~ i C a $ '� c E 600 50 ° c o 8 T E c gqsppo 30 °> 500 0 c ° 20 9 0 c a (I) � . 8 10 E m 0 w M K Ai c 400 w° 30 Undeveloped 0 Good Cover 0 o 2 12 - 350 25 Undeveloped c 1.0 ° c Fair Cover , , :6 14 2 300 E 20 Undeveloped 0 Zl 15 0 •- Poor Cover ° 19 ° 250 H 17 Single Family > 17 E —16 18 v Comm ial _ 19 c 200 Q _ 14 13 c 20 . � m J � c i2 21 cg II 0 150 9 .� 8 r 7 6 100 5 4 RCFC 15.WCD HYDROLOGY MANUAL,: 6 w 0 25 KEY L--H -Tc - K--Tc' o 30 0 EXAMPLE; E E_ (1) L= 550',,H =•5.0, K= Single Family(1 /4Ac.) 35 Development , Tc =12.6 min. (2) L =550', H =5.0% K = Commercial 40 Development, Tc = 9.7 min. . Reference: Bibliography item No. 35. PLATE D -3 1 I 0 � b z n D r r R9 O N p O1 V RAINFALL - INTENSITY- INCHES PER HOUR CATMEDRAL'CITY CHERRY VALLEY CORONA.. DESERT NOT SPRINGS ELSINORE - YILOONAR DURATION FREQUENCY MINUTES 10 100 YEAR YEAR s 6 T e 9 10 11 12. 13 14 l5 16 17 18, 19 20 22 24 26 28 30 32 34 36 38 40 4S so 5s 60 65 TO TS so as 4.14 6.T6 3. T3 6.08. 3.41 S.S6 3.1S S.1S 2.9S 4.81 2.77 4.52 2.62 4.28 2.49 4.OT 2.38 3.80 2.29 3.72 2019 3.58 2.11 3.44 2.04 3.32 1.97 3.22 1.91 3.12. 1.8S 3.03 1.75 2.86 1.67 2.72 1.59 2.60 1.92 2.49 1.46 2.39 1.41 2.30 1.36 2.22 1.32 2.1S 1.20 2.09 1.24 2.02 1.16 1.09 1.09 1.70 1.03 1.68 .'98 1.60 .94 1.53 .90 1.46 .86 1.41 .83 1.3S .80 1.31 SLOPE ■ .SOO DURATION FREQUENCY MINUTES 6 2.96 4.53 10' 100 4.21 YEAR YEAR S 3.65 5.49 6 3.30 ♦.9T 7 3.03 4.56 0 2.02 4.24 9 2.64 3.97 :10 2.49 3.7S 11 2.36 3.56 12 2.25 3.39 .13 2.16 3.25 14 2.OT 3.12 15 1.99 3.00 16 1.92 2.90 17 1.06 2.80 18 1.80 2.71 19 1.75 2.64 20 1.70 2.S6 22 1.61 2.43 24 1.Sk 2.32 .26 1.47 2.22 :28 1.41 2.13 30 1.36 2.OS 32 1.31 1.98 34 1.27 1.91 36 1.23 1.05 .30 1.20 1400 40 1.16 1.7S :43 1.09 1.64 50. 1.03 1.55 sS .90 1.47 60 .93 1.40 `65 .89 1.34 70 .85 1.29 75 .82 1.24 80 .79 . 1.20 85 .77 1.16 SLOPE _ .SSG DURATION , FREQUENCY MINUTES 6 2.96 4.53 10 100 4.21 YEAR YEAR S 3.10 We 6 2.64 4.38 7 2.64 4.07 8 2.47 3.81 9 2.34 3.60 10 2.22 3.43 11 2.12. 3:27 12 2.04 3.14 13 1.96 3.02 14 1.89 2.92 is 1.83 2.82 16 1.77. 2.73 17 1.7.2 2.66 18 1.68 2.56 19 1.63 2.52 20 1.59 2.46 22 1.S2 2.35 24' 1.46 2.25 26 1.40 2.17 28 1.36 2.09 30 1.31 2.02 32 1.27 1.96 34 1.23 1.90 36 1.20 1.8S 30 1.1T 1.81 40 1.14 1.76 45 1.06 1.66 so 1.03 1.50 95 .98 1.51 60 .94 1.45 GS .90 1.40 70 .07 1.35 75 .84 1.30 80 .82 1.26 as .80 1.23 SLOPE a .480 DURATION FREQUENCY MINUTES' 6 2.96 4.53 10 100 4.21 YEAR YEAR S 4.39 6.76 6 3.9S 6.08 7 3.62 S.S6 8 3.35 S.1S 9 3.13 4.81 10 2.94 4.S2 11 2.78 4.28 12 2.65 4.07 13 2.53 3.88 14 2.42 3.72 15 2.32 3.58 16 2.24 3.44 17 2.16 3.32 Is 2.09 3.22 19 2.03 3.12 20 1.97 3.03 22 1.86 2.86 24 1.77 2.7Z 26 1.69 2.60 28 1.62 2.49 30 1.55 2.39 32 1.S0 2.30 34 1.45 2.22 36 1.40 2.1S 38 1.36 2.09 40 1.32 2.02 4S 1.23 1.09 SO 1.16 1.78 55 1.09 1.68 60 1.04 1.60 6S .99 1.S3 70 .9S 1.46 7S .91 1.41 80 .88 1.35 as .85 1.31 SLOPE = .580 DURATION FREQUENCY MINUTES 10 100 YEAR YEAR S 3.23 4.94 6 2.96 4.53 7 2.75 4.21 8 2.56 3.95 9 2.44 3.73 10 2.12 3.S4 11 2.21 3.39 12 2.12 3.25 13 2.04 3.13 14 1.9T 3.02 15 1.91 2092 16 1.85 2.03 17 1.80 2.TS 18 1.75 2.6? 19 1.70 2.60 20 1.66 2.54 22 1.S9 2.43 24 1.52 2.33 26 1.46 2.24 20 1.41 2.16 30 1.3T. 2.09 32 1.33 2.03 34 1.29 1.9T - 36 1.2s 1.92 36 1.22 1.87 40 1.19 1.62 4S 1.13 1.72 SO 1.07 1.64 55 1.02 1.56 60 .98 1.S0 65 .94 1.44 70 .91 1.39 TS .86 1.3s so as 1.31. 85 .03 1.27 SLOPE ■ .480 1 or MIA VA fin IAE 131 o �C St,��' 1, 13 1 Z,8Z .SL3 1 Z,7 C oc ,�, S rc�� arbl 14,07 sm 17,)6* Sfr«t Z.7 $ 3,0 4 3 1 h f 4,13 4, 1.) ,B'S' 4�s S'& �• �� i �� 14,AG F•�''�' � 6 o r d 311 74' 151-rae 3,0 1),4)4 k%d- }'-I ,4,A& i 5,7 11 a 44B -1Q-- 440,61 A 7 r% i i R C F C a W C D HYDROLOt3Y J \ /JANUAL RATIONAL METHOD CALCULATION FORM Sheet Na_ of —Sheets PROJECT 5_f, Calculated by FREQUENCY Checked by •'-- -•- -- -�, - -- DRAINAGE Soil. a A I C A A I Q SECTION v L T >E T REMARKS AREA Development Acres In /hr. CFS CFS FPS FT. MIN. 3 v Ste of z,01 2-14 ,� 4.3o L / poc Tc =JZ 3v Dh16 rcct Z�? 1 �Ii�f i;,7 "C t cc 2,28 S ,S4S , Is p, hF= .¢GG.57 444,96= $,4 0, 131 o �C St,��' 1, 13 1 Z,8Z .SL3 1 Z,7 C oc ,�, S rc�� arbl 14,07 sm 17,)6* Sfr«t Z.7 $ 3,0 4 3 1 h f 4,13 4, 1.) ,B'S' 4�s S'& �• �� i �� 14,AG F•�''�' � 6 o r d 311 74' 151-rae 3,0 1),4)4 k%d- }'-I ,4,A& i 5,7 11 a 44B -1Q-- 440,61 A 7 r% TC' 100 EIKOOOJ IOJ .-90 80 LIMITATIONS: I. Maximum length =1000' 800\ area = 10 Acres 20 a 700 60 w c $ .H 0 600 a 50 c 0 15 r 300 c m Single Family (1/4 Acre) 200 o N m c 100 500 40 - 80 0 o .- 50 .E m 35 • o CL 20 400 0' 0 30 - 350 25 o � c 300 E c c 20 19 o .-. 250 18 17 -� ., 16 L o 15 14 m 200 13 J 2-12 ; 8 II 0 150 9 E 7 6 100 ' 5 LIMITATIONS: I. Maximum length =1000' 2• Maximum area = 10 Acres 20 a 0 Good Cover w o. $ .H 0 Y a L- H- Tc -K -Tc c .S 15 r 300 c a (1) L =550'9,H =5.0, K= .Single Family(1 /4 Ac.) Single Family (1/4 Acre) 200 o N � c 100 Development, Tc = 9.7 min. . 40 - 80 o o 50 .E 0 a 40 30 20 K Ai 19 C erclal (Pav 20 Undeveloped 0 Good Cover w o. 25 Undeveloped 0 T,O2 Fair Cover L- H- Tc -K -Tc c 30 Undeveloped 0 Poor Cover a (1) L =550'9,H =5.0, K= .Single Family(1 /4 Ac.) Single Family (1/4 Acre) Development , Tc =12.6 min. 4 RCFC a.WCD HYDROLOGY MANUAL Tc a 5 -i 6 � u Q 7-- � 0 8 E • a 9 0 10 E A107 14 lZl 15 N . 16 E 17 18 Reference: Bibliography item No. 35. - - -- - -- - - -- _ ..- -- - - - -- -- PLATE D -3 _ 19 C erclal (Pav 20 -- / c c o w o. 25 c. � KEY C L- H- Tc -K -Tc c 30 EXAMPLE. � E a (1) L =550'9,H =5.0, K= .Single Family(1 /4 Ac.) 35 Development , Tc =12.6 min. (2) L =550', H =5.61 K_= Commercial Development, Tc = 9.7 min. . 40 Reference: Bibliography item No. 35. - - -- - -- - - -- _ ..- -- - - - -- -- PLATE D -3 z n C D r :r m ;c Iv O RAINFALL INTENSITY- INCHES PER HOUR CATHEDRAL CITY ` CMERRY VALLEY I CORONA. DESERT MOT SPRINGS DURATION FREQUENCY MINUTES 10 100 YEAR YEAR S 4.14 6.16 6 3.73 6. OW 7 3.41 5.56 8 3.15 5.15 9 2.95 4.81 10 2.77 4.52 11 2.62 4.26 12. 2.49 4.07 13 2.36 3.68 14 2.28 3.72 15 2.19 3.58 16 2.11 3.44 17 2.04 3.32 18 1.97 3.22 19 1.91 3.11 20 1.85 3.03 22 1.75 2.66 24 1.6T 2.72 26 1.59 2.60 28 1.52 2.49 30 1.46 2.39 32 1.41 2.30 34 1.36 2.22 36 1.32 2.15 36 1.2S 2.09 40 1.24 2.02 4S 1.16 1.69 so 1.09 1.78 SS 1.03 1.68 60 .96 1.60 65 .94 1.53 70 .90 1.46 75 .86 1.41 80 .83 1.35 84 .60 1.31 SLOPE s .560 DURATION FREQUENCY MINUTES 6 2.98 4.53 10 100 4.21 YEAR YEAR S 3.65 5.49 6 3.30 4.97 T 3.03 4.56 8 2.82 4.24 9 2.64 3.97 10 2.49 3.75 Al 2.36 3.36 12 2.25 3.39 13 2.16 3.25 14 2.07 3.12 15 1.99 3.00 16 1.92 2.90 17 1.86 2.80 18 1.80 2.71 19 1.75 2.64 20 1.70 2.56 ;22 1.61 2.43 24 1.54 2.32 .26 1.47 2.22 `28 1.41 2.13 30 1.36 2.OS 32 1.31 1.96 34 1.27 1.91 36 1.23 1.85 38 1.20 1.80 40 1.16 1.75 .4s 1.09 1.64 so 1.03 l.ss Ss .98 1.47 60 .93 1.40 '6S .89 1.34 TO .8S 1.29 TS .82 1.24 80 -79 1.20 i85 .77 1.16 SLOPE _ .SSG DURATION FREQUENCY MINUTES 6 2.98 4.53 10 l00 4.21 YEAR YEAR S 3.10 4.78 6 2.84 4.38 7 2.64 4.07 8 2.47 3.81 9 2.34 3.60 10 2.22 3.43 11 2.12. 3:27 12 2.04 3.14 13 1.96 3.02 14 1.89 2.92 is 1.83 2.62 16 1.77. z.73 17 1.72 2.66 18 1.68 2.56 19 1.63 2.52 20 1.59 2.46 22 1.52 2.35 24 1.46 2.25 26 1.40 2.17 26 1.36 2.09 30 1.31 2.02 32 1.27 1.96 34 1.23 1.90 36 1.20 1.85 38 1.17 1.81 40 1.14 1.76 4S 1.06 1.66 so 1.03 1.58 SS .98 1.51 60 .94 1.45 6S .90 1.40 TO .8T 1.35 TS' .84 1.30 80 .82 1.26 as .60 1.23 SLOPE a .460 DURATION FREQUENCY MINUTES' 6 2.98 4.53 10 100 4.21 YEAR YEAR 5 4.39 6.76 6 3.95 6.08. 7 3.62 S.S6 a 3.35 S.IS 9 3.13 4.81 10 2.94 4.52 11 2.78 4.26 12 2.65 4.07 13 2.53 3.88 14 2.42 3.12 15 2.32 3.58 16 2.24 3.44 17 2.16 3.32 18 2.09 3.22 19 2.03 3.12 20 1.97 3.03 22 1.86 2.86 24 1.71 2.72 26 1.69 2.60 28 1.62 2.49 30 1.55 2.39 32 1.50 2.30 34 1.45 2.22 36 1.40 2.15 38 1.36 2.09 40 1.32 2.02 45 1.23 1.89 So 1.16 1.78 55 1.09 1.68 60 1.04 1.60 65 .99 1.53 TO .95 1.46 7S .91 1.41 80 .88 1.35 as .85 1.31 SLOPE ■ .SSO ELSINORE - YILOOMAR DURATION FREQUENCY MINUTES 10 100 YEAR YEAR S 3.23 4.94 6 2.98 4.53 7 2.75 4.21 8 2.58 3.95 9 2.44 3.T3 10 2.)2 3.54 11 2.21 3.39 12 2.12 3.25 13 2.04 3.13 14 1.97 .3.02 IS 1.91 2.92 16 1.9S 2.83 IT 1.80 2.75 18 1.TS 2.67 19 1.70 2.60 20 1.66 2.54 22 1.59 2.43 24 1.52 2.33 26 1.46 2:24 28 1.41 2.16 30 1.37 2.09 32 1.33 2.03 34 1.29 1.97 _ 36 1.25 1.92 38 1.22 1.87 40 1.19 1.82 45 1.13 1.72 s0 1.07 1.64 SS 1.02 1.56 60 .96 1.50 65 .94 1.44 TO .91 1.39 75 .88 1035 80 as 1.31 85 .63 1.2T SLOPE s .480 r L r