Distributed Hydrologic Modeling of Humid Regionsby Fred L. Ogden, (A.M.ASCE),
Brent A. Watts, (S.M.ASCE),
Document Type: Proceeding Paper
Abstract: Distributed physically-based hydrologic modeling of humid watersheds with shallow soils is complicated by non-Hortonian runoff production mechanisms. This paper presents a numerical experimental methodology for evaluating the frequency, duration and extent of saturation excess variable source areas. The methodology considers rainfall spatio-temporal variability and antecedent moisture conditions, with and without soil macropores in the downslope direction. This study allows examination of non-Hortonian runoff production mechanisms with implications for two-dimensional physically based watershed modeling.
Subject Headings: Hydrologic models | Humidity | Watersheds | Runoff | Numerical methods | Soil water | Model analysis | Two-dimensional models
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