INFIL1D: A quasi-analytical model for simulating one-dimensional, constant flux infiltration

The program INFIL1D is designed to calculate approximate wetting front advance into an unsaturated, uniformly moist, homogeneous soil profile, under constant surface flux conditions. The code is based on a quasi-analytical method, which utilizes an assumed invariant functional relationship between reduced (normalized) flux and water content. The code uses general hydraulic property data in tabular form to simulate constant surface flux infiltration.