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23813
51 IE k -• - -- -- - -- -- 23g13 I �* slo 3.8/3 Client LA . . 9, / — . �Jab NOL.— 0 OD 703 /-3 ASSOCIATES] fi; 4 Reference: Bibliography item No. 35. . RCFC &-WCD HYDROLOGY J\/JANUAL PLATE D -3 TC' LIMITATIONS: L 100 1, Maximum length =1000' TC 1000 90 2. Maximum area = 10 Acres 5 900 80 a 800 70 0 H 6 Y M o 400 a b Q 700 60 2 200 7 . 0 V - N CL O r 600 a 50 0 � ,,. 6p� 8 0. N • Z. 0 O SO v va o > d 0 E w 30 06. 20 9 0 500 �/� F3 a 35 v ` C 'O o it 3 10 �+ c w e K A i II U- 400 0 30 Undeveloped 0 o, Good Cover 2 12 c 0 350 c 25 Undeveloped 0 E �8 Fair Cover :6 14 0 o := 300 E 20 2 _ Undeveloped 0 :3 l21 15 c _ Poor Cover 2 16 0 0 250 17 Single Family 50 a 17 E f 6 (1/4 Acre) m 113 c F o 14 Commercial 20 v+ v (Pav U 0-200 13 c 12 c4 I I c , .25 v c 150 0 KEY 9 L-•H —Tc —K-Tc o E= 8 30 �. EXAMPLE; E 7 (I)L=550', H.=5.0, K = Family(I /4 Ac.) F= .Single Development , Te =,12-6 min. . 35 1100 6 (2) L=550', H =5.0'1 K= Commercial 40 Development , Tc = 9.7 min. 5 4 Reference: Bibliography item No. 35. . RCFC &-WCD HYDROLOGY J\/JANUAL PLATE D -3 r m v l► N 0 a) • V � n `v n z n C D r Z C-) m _( D D D D p D O Z RAINFALL INTENSITY - INCHES PER HOUR CATHEDRAL CITY CHERRY VALLEY CORONA DESERT MOT SPRINGS ELSINORE - WILDO"AR DURATION FREQUENCY DURATION FREQUENCY DURATION FREQUENCY DURATION FREQUENCY DURATION FREQUENCY MINUTES MINUTES MINUTES, MINUTES MINUTES 10 100 10 100 10 100 10 100 10 100 YEAR YEAR YEAR YEAR YEAR YEAR YEAR YEAR YEAR YEAR 5 4.14 6.76 S 3.65 5.49 5 3.10 4.T8 5 4.39 6.76 5 3.23 x.94 6 3.73 6.08 6 3.30 4.97 6 2.84 4.38 6 3.9s 6.O8 6 2.96 4.53 7 3.41 5.56 7 3.03 4.56 7 2.64 4.07 7 3.62 5.56 7 2.75 4.21 B 3.15 5.15 8 2.82 4.24 8 2.47 •3.81 8 3.35 S.IS 8 2.58 3.95 9 2.9s 4.61 9 2.64 3.97 9 2.34 3.60 9 3.13 4.81 9 2.44 3.73 10 2.77 4.52 10 2.49 3.75 10 2.22 3.43 10 2.94 4.52 10 2.32 3.54 I1 2.62 4.28 I1 2.36 3.56 11 2.12 3.27 11 2.78 4.28 11 2.21 3.39 12 2.49 4.07 12 2.25 3.39 12 2.04 3.14 12 2.6s 4.07 12 2.12 3.25 13 2.38' 3.88 13 2.16 3.25 13 1.96 3.02 13 2.53, 3.68 13 2.04 3.13 14 2.28 3.T2 14 2.07 3.12 14 1.89 2.92 14 2.42 3.72 14 1.97 3.02 is 2.19 3.58 1s 1.99 3.00 15 1.63 2.82 is 2.32 3.58 1s 1.91 2.92 16 2.11 3.44 16 1.92 2.90, 16 1.77 2.73 16 2.24 3.44 16 1.85 2.83 17 2.04 3.32 17 1.86 2.80 17 1.72 2.66, 17 2.16 3.32 17 1.80 2.75 18 1.9T 3.22 18. 1.80 2.71 18 1.68 2.58 18 2.09 3.22 18 1.TS 2.67 19 1.91 3.12 19 1.TS 2.64 19 1.63 2.52 19 .2.03 3.12 19 I.TO 2.60 20 loss 3.03 20 1.70 2.56 20. 1.59 2.46 20 1.97 3.03 20 1.66 2.54 22 1.75 2.86 22 1.61 2.43 22 1.52 2.35 22 1.86 2.86 22 1.59 2.43 24 1.67 2.72 24 1.54 2.32 24 1.46' 2.25 24 1.77 2.72. 24 i.s2 2.33 26 1.59 2.60 26 1.47 2.22 26 1.40 2.iT 26 1.69 2.60 26 1.46 2.24 28 1.52 2.49 28 1.41 2.13 28 1.36 2.09 28 1.62 2.49 26 1.41 2.16 30 1.46 2.39 30 1.36 2.05 30 1.31 2.02 39 loss 2.39 30 1.37 2.09 32 1.41 2.30 32 1.31 1.98 32 1.27 1.96 32 1.50 2.30 32 1.33 2.03 34 1.36 2.22 34 1.27 1.91 34 1.23 1.90 34 1.45 2.22 34 1.29 1.97 36 1.32 2.15 36 1.23 1.85 36 1.20 1.95 36 1.40 2.15 36 1.25 1.92 38 1.28 2.09 38 1.20 1.80 38 1.17 1.81 38 1.36 2.69 38 1.22 1.87 40 1.24 2.02 40 1.16 1.75 40 1.14 1.76 40 1.32 2.02 40 1.19 1.82 45 1.16 1.89 4S 1.09 1.64 45 1.06 1.66 45 1.23 1.49 4S 1.13 1.T2 50 1.09 1.78 SO 1.03 1.55 So 1.03 1.58 So 1.16 1.78 s0 1.47 1.64 ss 1.03 1.68 SS .99 1.47 SS .96 1.51 SS 1.09 1.65 s5 1.02 1.56 60 .98 1.60 60 .93' 1.40 60 .94 1.45 60 1.04 1.60 60 .98 1.50 65 .94 - 1.53 6S .89 1.34 6S .90 1.40 65 .99 1.53 65 .94 1.44 70 .90 1.46 70 as 1.29 70 .87 1.35 TO .9s 1.46 TO .91 1.39 75 .86 1.41 75 .82 1.24 7S .84 1.30 75 .91 1.41 75 .88 1.35 80 .83 1.35 80 .79 1.20 80 .82 1.26 80 .88. 1.35 80 .8S 1.31 as .80 1.31 85 .77 1.16 85 .80 1.23 85 .85 1.31 as .83 1.27 SLOPE - .580 SLOPE ■ .SSO SLOPE - .480 SLOPE .580 SLOPE ■ .480 Y J: F. DAVIDSON ASSOCIATES ° crvn. • tYCRS - �t�xxt:RS • P.O. BOX 453. R C FC a W C D HYDROLOGY MANUAL RIVERSIDE, CALIFORNIA 92502 Shell Na � of � SMets RATIONAL METHOD CALCULATION FORM PROJECT 22f -'67 230/3 LA- 6IJ.,'7 -A 71E /OCQyG -¢t Colculated by.__ W. p. 800 703 / -/3 FREQUENCY � Checked by--------- - �� - -- DRAINAGE AREA. HMO mrm-smmmmm�, REMARKS MOM ce mmm mm mmm mmm mmmm mmmm i 2 S/ f� 0 I .. s. SUBJECT PAGE / OF / PROJECT TZ�7cT 23 S/ 3 J F D JOB NO 1300 %03 LOCATION GA &),1047-.9 BY fC.elidlO+� CLIENT L.62, �/Di�f \ /FNTU,PE ASSOCIATES DATE G�TCr/ B�sl� E �Y S /vim � �E. yls•TA 8y��rA Gl .�I,Or,�oncy��✓G c.,g. = /.S c.�s• .. L4 __ 62a , �7 La .B. 2/ yc To w L- V CIS, t O, 9 G •7 c,/.f. 24, Jr L d�3 � L ¢. S( •�G3 2.78 rec f-/v = . /2 /./ Al 520 .1t ?T Lcuu.! = ao33 (SZ).(. /2� /Z" PVC � ��/ c,B• ( (T• . - 9/� \