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Comparison of Peak Discharges of Hydrologic Models

by T. Giorgis Goitom, Michael Baker Jr Inc, United States,
Donald E. Woodward, Michael Baker Jr Inc, United States,



Document Type: Proceeding Paper

Part of: Soil Properties Evaluation from Centrifugal Models and Field Performance

Abstract:

The objective of this paper is to evaluate the predictive capabilities of hydrologic models in estimating the magnitudes and frequencies of flood peaks by comparing them with the values of the discharge-frequency curve developed from observed peak flows at a gaging station. The hydrologic models considered in this paper are: the U.S. Army Corps of Engineers (USACOE) HEC-1 model, the U.S. Soil Conservation Service (SCS) TR-20 model, the Pima County Hydrology Method, the Rational Method and the U.S. Geological Survey (USGS) regression equations for Arizona. The case study uses a 560-acre watershed 63.004, a subwatershed of the semiarid Agricultural Research Service (ARS) Walnut Gulch Experimental Rangeland Watershed near Tombstone, Arizona.

Subject Headings: Hydrologic models | Flood frequency | Water discharge | Watersheds | Mathematical models | Mathematics | Hydrology | Arizona | United States

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