Evaluating infiltration for border irrigation models |
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| Authors: | Albert J Clemmens |
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| Institution: | United States Department of Agriculture, Agricultural Research Service, U.S. Water Conservation laboratory, 4331 East Broadway Road, Phoenix, AZ 85040 U.S.A. |
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| Abstract: | The infiltration characteristics of a soil are important to the design, evaluation and management of border irrigation systems. The use and verification of border irrigation models also rely heavily on infiltration. This paper presents a technique for determining infiltration when detailed information is available on the total infiltrated volume during the irrigation which can be obtained from measurements of inflow, outflow, and water depths on the border strip. The method uses a volume balance at progressive times and is an extension of earlier work. Data from this method were used as input to the zone-inertia border irrigation model and good agreement was found between measured and computed values of advance, recession, runoff rates and volumes, and surface water depths. |
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