Precipitation began at noon on June 14 and caused a flood hydrograph in a stream. As the storm passed, the following streamflow data at cross sections A and B were obtained:
Time, June 14–17 | Inflow section A (cfs) | Outflow section B (cfs) |
6 a.m. | 10 | 10 |
Noon | 10 | 10 |
6 p.m. | 30 | 13 |
Midnight | 70 | 26 |
6 a.m. | 50 | 43 |
Noon | 40 | 45 |
6 p.m. | 30 | 41 |
Midnight | 20 | 35 |
6 a.m. | 10 | 28 |
Noon | 10 | 19 |
6 p.m. | 10 | 15 |
Midnight | 10 | 13 |
6 a.m. | 10 | 11 |
Noon | 10 | 10 |
(a) Determine the Muskingum K and X values for the river reach.
(b) Determine the hydrograph at section B if a different storm produced the following hydrograph at section A (continue computations until outflow falls below 101 cfs):
Time | Inflow (cfs) |
6 a.m. | 100 |
Noon | 100 |
6 p.m. | 200 |
Midnight | 500 |
6 a.m. | 600 |
Noon | 400 |
6 p.m. | 300 |
Midnight | 200 |
6 a.m. | 100 |
Noon | 100 |
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