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Dam-Break Study for Large Floodplain Area - A Case Study

by J. S. Wang, Bechtel Corp, San Francisco, United States,
R. Baysinger, Bechtel Corp, San Francisco, United States,
S. L. Hui, Bechtel Corp, San Francisco, United States,



Document Type: Proceeding Paper

Part of: Engineering Hydrology

Abstract:

In simulating a dam break flood in a large floodplain, the maximum flood level is sensitive to the off-channel storage volume used in the channel routing. An incorrect estimate of the off-channel storage volume could lead to an over-estimate of the maximum flood stage and an under-estimate of the floodwave travel time at the downstream locations. A separate overland channel routing algorithm was developed to predict more accurately the flood propagation in a large floodplain area.

Subject Headings: Flood routing | Dam failures | Case studies | Floods | Channels (waterway) | Water storage | Channel flow

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