ABSTRACT
The performance of five different infiltration models is compared in border irrigation, using the kinematic wave model. These are the Kostyakov, Green-Ampt, Philip two-term, Jobling and Smith models. A numerical scheme is used to solve the kinematic wave model for purposes of comparison. The models are compared for three phases of the border irrigation cycle, namely, advance, storage and recession. The Green-Ampt infiltration model consistently underestimated infiltration, and in turn yielded faster advance. The other models did not follow a particular trend. For each infiltration model, there was a different range of accuracy between calculated and observed advance times. The recession times estimated by the models were relatively close to each other, and the overall range of the average absolute percent deviation between the observed and calculated values was from 0.71% to 10.33%.
