A WATER BALANCE MODEL OVER SOILS WITH SPATIALLY VARYING INFILTRATION PROPERTIES

P.K. Allepalli, R.S. Govindaraju and J.K. Koelliker

Kansas State University, Manhattan, KS, 66506, 913-532-1585


ABSTRACT

A water balance study was conducted at an agricultural and a pristine site on the Konza Prairie research area. The hydrologic variables of interest were precipitation, surface runoff, evapotranspiration, infiltration and soil water content. Surface infiltration properties were measured at 40 locations over each site. Spatial variability of these properties was incorporated into compution of areally averaged infiltration rates. The water budget model was used to predict average soil water contents. These were compared with measured values for model evaluation.

KEY WORDS

infiltration, spatial variability

This paper is from the Proceedings of the HSRC/WERC Joint Conference on the Environment, May 1996, published in hard copy and on the Web by the Great Plains/Rocky Mountain Hazardous Substance Research Center.