The ordinates of a 2-hr unit hydrograph are given in the following table. Derive a 4-hr unit hydrograph from the 2-hr unit hydrograph by
(a) the lagging method and
(b) the 5-hydrograph method.
Time Unit | 2-hr Unit Hydrograph Ordinates |
0 | 0 |
1 | 200 |
2 | 400 |
3 | 300 |
4 | 200 |
5 | 100 |
6 | 0 |
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