A parameter study for heterogeneous infiltration was performed employing a one-dimensional computer program. Soil heterogeneity was defined by linear variations of soil parameters. From the solutions obtained, the instantaneous and accumulative infiltration rates were correlated versus the rate in which the parameters varied in the soil profile. The end result being coaxial graphs from which a relative infiltration rate may be obtained by inputting time and the rates of change of various soil parameters.
Courette, Charles and Jeppson, Roland W., "Effects of Soil Heterogeneity on One-Dimensional Infiltration" (1977). Reports. Paper 523.