SOIL-WATER CONTENT AT R-5 .2. IMPACT OF ANTECEDENT CONDITIONS ON RAINFALL RUNOFF SIMULATIONS

In this paper, the second part of a two-part series, the performance of a quasi-physically based rainfall-runoff model (QPBRRM) is evaluated for a set of 39 events from a small rangeland catchment (R-5) using a suite of alternative antecedent soil water content estimates. The data set used to glean antecedent conditions for the R-5 events, described in the companion paper contains 22 848 observations of soil water content made over a 4 year period. The performance of the model is improved by using estimates of antecedent soil water content that include consideration of spatial variability.