Discharge and Depth Behind a Partially Breached Dam

by Cheng-lung Chen, US Geological Survey, Menlo Park, CA, USA,

Document Type: Proceeding Paper

Part of: Hydraulic Engineering


The role that the velocity-distribution correction factor plays in the determination of the flood discharge and corresponding flow depth behind a partially breached dam is investigated. Assumption of a uniformly progressive flow for an established dam-break flood in a rectangular channel of infinite extent leads to the formulation of a theoretical relation between the depth and velocity of flow expressed in differential form. Integrating this ordinary differential equation, one can express the velocity in terms of the depth.

Subject Headings: Channel flow | Floods | Fluid velocity | Water discharge | Dam failures | Velocity distribution | Water flow | Hydrologic models

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