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Steady Infiltration from a Ditch: Theory and Experiment¹

ABSTRACT

The two-dimensional, steady-state water flow equation, which is based on the assumption that the hydraulic conductivity is an exponential function of the soil water pressure, is solved for a ditch on the soil surface. The results include expressions describing the distributions of matric flux potential and water content. Measured water contents were compared with this mathematical model and also with the models given by Lomen and Warrick (1974) for a line source, and Warrick and Lomen (1976) for a strip source.

¹ Adapted from the Ph.D. dissertation presented to the Technical University of Istanbul (Turkey) in March 1974 and supported as research project No. MAG-299 by the Scientific and Technical Council of Turkey.

² Assistant Professor, Dep. of Civil Engineering, Karadeniz (Blacksea) Technical Univ., Trabzon, Turkey. Currently on leave at the Dep. of Soil Science, Univ. of Wisconsin, Madison, WI 53706.

Received for publication August 16, 1977. Accepted for publication March 9, 1977.