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<br /> COMPUTATION OF UNIT HYDROGRAPHS
<br /> (ILLUSTRATION) RESERVOIR; SALUDA RIVER BASIN, S.C.
<br />LOCATION SUB-AREA NO.l.PL 15 ;D.A. 970 SQ. MI.; SELECTED tR~HRS.
<br />SNYDER'S EQ'NS: L 66 ; Lea 32 ; (LLca)-3 9.9 ; Ct 2.8 ; tp 27.7
<br /> tr~(tp/S.5)~ 5.1 ; D.25(tR-tr) 0.2 ; tpR = 28 ; 640 Cp"= 370
<br /> qpR 13.2 C.F,S./SQ.MI.; Qp-12,800C.F.S.; PEAK-AREA RATING IN % 41
<br />S-CURVE: Qmax,=(o.A.) (26.89) (24/tR)=(D.Il../tR) (645.36)- 104.330 C.F. s.
<br /> GRAPH NO. 1 A GRAPH NO. I-A
<br /> (a) TRIAL VALUES (b) FINAL VALUES
<br />LINE qtR 13.2 ;LAG 28 ;RATING~ qtR 13.2 ;LAG~;RATING3L
<br />NO. TIME W75 27 ;W5D 44 ;BASE 126 TIME WT5 27 ;w50 44 ;BASE 126
<br /> IN IN
<br /> HOURS UNIT HY- S-CURVE S-CURVE HOURS UNIT HY- S-CURVE S-CURVE
<br /> DROGRAPH SUBTRAC- HYDRO- DROGRAPH SUBTRAC~ HYDRO-
<br /> TION GRAPH TION GRAPH
<br />I 2 3 4 5 6 7 8 9
<br />I 6 1,300 1,300 6 1,300 1,300
<br />2 12 4,400 1,300 5,700 12 4,400 1,300 5,700
<br />3 18 8,200 5,700 13,900 18 8,200 5,700 13,900
<br />4 24 11,700 13,900 25,600 24 11,700 13,900 25,600
<br />5 30 12,800 25,600 38,400 30 12,800 25,600 38,400
<br />6 36 12,400 38,400 50,800 36 12,400 38,400 50,800
<br />7 42 11,000 50,800 61,800 42 11,000 50,800 61,800
<br />8 48 9,000 61,800 70,800 48 9,000 61,800 70,800
<br />9 54 7,400 70,800 78,200 54 7,400 70,800 78,200
<br />10 60 6,000 78,200 84,200 60 6,000 78,200 84,200
<br />II 66 4,800 84,200 89,000 66 5,000 84 , 200 89,200
<br />12 72 3,300 89,000 92,300 72 4,100 89,200 93,300
<br />13 78 2,700 92,300 95,000 78 3,200 93,300 96,500
<br />14 84 2,000 95,000 97,000 84 2,500 96,500 99,000
<br />15 90 1,700 97,000 98,700 90 1,800 99,000 100 ,800
<br />16 96 1,300 98,700 100,000 96 1,300 100,800 102,100
<br />17 102 1,100 100,000 101,100 102 900 102,100 103,000
<br />18 108 1,000 101,100 102,100 108 550 103 , 000 103,550
<br />19 114 900 102,100 103,000 114 400 103., 550 103,950
<br />20 120 900 103,000 103,900 120 250 103,950 104,200
<br />21 126 430 103,900 104,330 126 130 104, 200 104,330
<br /> NOTE: ALL DISCHARGES ARE INSTANTANEOUS VALUES
<br /> CORRESPONDING TO END OF HOUR DESIGNATED IN COL. 2.
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<br />EM 1110-2-1405
<br />App 111
<br />31 Aug 59
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<br />PLATE NO,10
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