Techniques for estimating flood hydrographs for ungaged urban watersheds
Technical Report
·
OSTI ID:5478317
The Clark Method, modified slightly, was used to develop a synthetic dimensionless hydrograph that can be used to estimate flood hydrographs for ungaged urban watersheds. Application of the technique results in a typical (average) flood hydrograph for a given peak discharge. Input necessary to apply the technique is an estimate of basin lagtime and the recurrence interval peak discharge. Equations for this purpose were obtained from a recent nationwide study on flood frequency in urban watersheds. A regression equation was developed which relates flood volumes to drainage area size, basin lagtime, and peak discharge. This equation is useful where storage of floodwater may be a part of design or flood prevention. 6 refs., 17 figs., 5 tabs.
- Research Organization:
- Geological Survey, Doraville, GA (USA). Water Resources Div.
- OSTI ID:
- 5478317
- Report Number(s):
- USGS-OFR-82-365; ON: TI85901664
- Country of Publication:
- United States
- Language:
- English
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