Incorporating Crop Water Use in Drainage Design in Arid Areas

by James E. Ayars, USDA-ARS, Water Management Research, Lab, Fresno, CA, USA,
David B. McWhorter, USDA-ARS, Water Management Research, Lab, Fresno, CA, USA,

Document Type: Proceeding Paper

Part of: Development and Management Aspects of Irrigation and Drainage Systems


A method of drainage design for use in arid areas was developed by combining procedures proposed by D. B. McWhorter along with plant uptake functions developed by D. W. Grimes and D. W. Henderson. The method is simple to use and demonstrates the impact of plant extraction and ground water quality on design spacing. The method is also suitable for drainage design when seepage occurs through an impermeable barrier. More data are required to fully develop the plant water functions.

Subject Headings: Water resources | Hydraulic design | Hydrologic models | Water table | Crops | Water use | Resource management | Subsurface drainage

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