Historical Rainfall-Runoff Analysis Using the Antecedent Precipitation Index

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by B. J. Doeing, (M.ASCE), WEST Consultants, Inc, Carlsbad, United States,
R. A. Gaines, WEST Consultants, Inc, Carlsbad, United States,
T. M. James, WEST Consultants, Inc, Carlsbad, United States,

Document Type: Proceeding Paper

Part of: Hydraulic Engineering:

Abstract: A long term simulation of rainfall-runoff can be used when analyzing the potential for economic benefits or flood damages to result from changes in the watershed, for developing discharge-frequency curves and establishing flow durations, and for applications in unsteady flow hydraulic models. This paper presents a method for computing historical synthetic discharge hydrographs. The procedure uses rainfall gage data, synthetic unit hydrographs, and the antecedent precipitation index (API) to account for regional rainfall losses. A computer program named 'HUXRAIN' was developed by the Memphis District U.S. Army Corps of Engineers to simplify the procedure and to perform the analysis.

Subject Headings: Rainfall-runoff relationships | Computer software | Computer analysis | Flow simulation | Hydrographs | Potential flow | Unsteady flow | Flow duration | North America | Memphis | Tennessee | United States

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