A Geomorphologically-Based Runoff Prediction Model: Case Study of Two Gauged Watersheds in Saudi Arabia

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by Mohamed N. Allam, Cairo Univ, Giza, Egypt, Cairo Univ, Giza, Egypt,
Khalid S. Balkhair, Cairo Univ, Giza, Egypt, Cairo Univ, Giza, Egypt,

Document Type: Proceeding Paper

Part of: Engineering Hydrology:

Abstract: Using the Geomorphologic Instantaneous Unit Hydrograph (GIUH) and via the convolution transformation, a linear discharge hydrograph prediction model is obtained. Infiltration in streams is represented with a linear function of surface runoff; equals an infiltration coefficient multiplied by the streamflow discharge. Two problems are addressed; (1) estimation of the infiltration coefficient, and (2) estimation of the surface runoff velocity. Analysis of these problems are carried out through applications for two gauged watersheds in Saudi Arabia. A comparison between predicted and observed hydrographs, for representative storms, is presented.

Subject Headings: Model analysis | Watersheds | Case studies | Runoff | Geomorphology | Hydrologic models | Infiltration | Hydrographs | Streamflow | Linear functions | Fluid velocity | Middle East | Saudi Arabia

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