Water movement in the unsaturated zone is an important hydrological process. Richard’s
 equation is windily used to describe both soil water infiltration and soil water absorption.
 Various methods have been developed to solve Richard’s equation. Wang et al. (2003)
 have developed an algebraic model for the description of soil water infiltration, based on
 Parlange’s solution of Richard’s equation and on soil retention curve and hydraulic
 conductivity equation given by Brooks and Corey. Their model utilizes experimental
 measurements of the cumulative infiltration volume and the wetting front distance as
 functions of time in order to describe soil water infiltration. The objective of this paper is to
 test the accuracy of the Wang et al. algebraic model for the one-dimensional (vertical) soil
 water infiltration. A vertical infiltration experiment was conducted on a sandy soil, for the
 measurement of the cumulative infiltration volume and the wetting front distance. Soil
 water content was determined at selected times and positions, using gamma ray
 absorption. Additionally the hydraulic conductivity K(θ) and the soil retention curve Ψ(θ)
 were determined. The algebraic model developed by Wang et al., was found simple to
 use since the required data are the cumulative infiltration (F), the wetting front distance
 (zf) and the initial and saturated soil water content (θi and θs respectively). The results
 show a fair agreement between calculated and measured values on soil water content
 profiles, hydraulic conductivity and on the water mass balance.