Homework Soursehelp plzSolutionHere you have to understand that as the maxi
help plz!!
Solution
Here you have to understand that as the maximum outflow capacity is 25 ft3/sec, the storage will only start to fill after it exceeds 25 ft3/sec. The amount by which it exceeds will give you the storage that you need to have for that duration.
I have sample calculation. Hope you will understand.
| Time from beginning of runoff flood (hr.) | Runoff Flow Rate | Pond outflow rate (cfs) | Cumulated required storage volume (ft3) | Remarks (sample calculation) |
| (ft3/sec) | ||||
| 0 | 5.5 | 5.5 | 0 | (5.5-5.5)*60*60 |
| 1 | 16 | 16 | 0 | 0+(16-16)*60*60 |
| 2 | 20 | 20 | 0 | 0+(20-20)*60*60 |
| 3 | 28 | 25 | 10800 | 0+(28-25)*60*60 |
| 4 | 37 | 25 | 54000 | 10800+(37-25)*3600 |
| 5 | 48 | 25 | 136800 | |
| 6 | 62 | 25 | 270000 | |
| 7 | 79 | 25 | 464400 | |
| 8 | 89 | 25 | 694800 | |
| 9 | 71 | 25 | 860400 | |
| 10 | 62 | 25 | 993600 | |
| 11 | 55 | 25 | 1101600 | |
| 12 | 47 | 25 | 1180800 | |
| 13 | 32 | 25 | 1206000 | |
| 14 | 20 | 20 | 1206000 | |
| 15 | 14 | 14 | 1206000 | |
| 16 | 10 | 10 | 1206000 | |
| 17 | 6 | 6 | 1206000 | |
| 18 | 4 | 4 | 1206000 | |
| 19 | 1 | 1 | 1206000 | |
| 20 | 0 | 0 | 1206000 |
