The hydrograph tabulated below is for a river that drains an area of 810 mi?. Plot nydrograph, separate the direct runoff from the base flow, and determine the volume lirect runoff in sfd, ac-ft and in. over the basin. Use Eq. 3-12 to determine the durat f the direct runoff. Tabulate the direct runoff hydrograph at 12-hr intervals,

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
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Chapter2: Loads On Structures
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3-29. The hydrograph tabulated below is for a river that drains an area of 810 mi. Plot the
hydrograph, separate the direct runoff from the base flow, and determine the volume of
direct runoff in sfd, ac-ft and in. over the basin. Use Eq. 3-12 to determine the duration
of the direct runoff. Tabulate the direct runoff hydrograph at 12-hr intervals.
Day
Hour
Discharge
(cfs)
Day
Hour
Discharge
(cfs)
850
4
3270
12
820
12
2500
1
790
1960
6.
935
12
1510
12
2620
6.
1240
18
6350
12
1020
6970
7
850
6800
12
680
12
6370
8.
580
5250
12
4100
a0a90있a90a0
3.
Transcribed Image Text:3-29. The hydrograph tabulated below is for a river that drains an area of 810 mi. Plot the hydrograph, separate the direct runoff from the base flow, and determine the volume of direct runoff in sfd, ac-ft and in. over the basin. Use Eq. 3-12 to determine the duration of the direct runoff. Tabulate the direct runoff hydrograph at 12-hr intervals. Day Hour Discharge (cfs) Day Hour Discharge (cfs) 850 4 3270 12 820 12 2500 1 790 1960 6. 935 12 1510 12 2620 6. 1240 18 6350 12 1020 6970 7 850 6800 12 680 12 6370 8. 580 5250 12 4100 a0a90있a90a0 3.
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