Radar Rainfall Measurements and Runoff Forecasting

by David J. Wall, Univ of New Haven, United States,
Robert C. Shedd, Univ of New Haven, United States,

Document Type: Proceeding Paper

Part of: Hydraulic Engineering


Rainfall varies in intensity and depth over time and space. Weather radar systems can provide estimates of rainfall at points in space with nearly continuous coverage with respect to time. A study was conducted to investigate the effects, on hydrologic forecasts, of varying the resolution of radar rainfall estimates in both time and space. A definite relationship was found to exist between the standard error of the hydrograph peaks and the radar grid spacing as well as the time interval between measurements.

Subject Headings: Radar | Rainfall-runoff relationships | Runoff | Forecasting | Rainfall | Hydrologic models | Hydrographs

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