Rainfall-Sampling Impacts on Runoff

by D. C. Goodrich, Aridland Watershed Management, Research Unit, Tucson, United States,
D. A. Woolhiser, Aridland Watershed Management, Research Unit, Tucson, United States,
C. L. Unkrich, Aridland Watershed Management, Research Unit, Tucson, United States,



Document Type: Proceeding Paper

Part of: Hydraulics/Hydrology of Arid Lands (H?AL)

Abstract:

The sensitivity of computed peak-runoff rates to rainfall-sampling frequency over three semiarid watersheds in southeastern Arizona of increasing size is investigated using the methodology of Woolhiser (1986). The impacts of rainfall sampling on runoff computations are assessed using the distributed rainfall-runoff model KINEROS. Results provide guidelines for the sampling frequency required to maintain accurate peak computations as a function of basin scale.

Subject Headings: Rainfall-runoff relationships | Runoff | Rainfall frequency | Rain water | Computer models | Watersheds | Model accuracy | Arizona | United States

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