Rainfall-Runoff Forecasting of Desert Flash Floodsby Jené Hendrickson, Univ of Arizona, Tucson, United States,
Soroosh Sorooshian, Univ of Arizona, Tucson, United States,
Abstract: A distributed, physically-based rainfall-runoff model has been applied to a 150 km2 semi-arid watershed, and model accuracy is being evaluated with an emphasis on forecasting flow peaks resulting from convective rainfall. Modeling studies utilizing rainfall data from an extremely dense raingage network suggest that spatial variability of convective rainfall, coupled with non-linearity of the infiltration excess process, has a large impact on runoff and forecast accuracy.
Subject Headings: Rainfall-runoff relationships | Model accuracy | Hydrologic models | Arid lands | Forecasting | Data processing | Floods | Mathematical models
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