Calibration of a catchment modelling system with spatially variable parameters

Abstract

Implementation of catchment modelling systems is an accepted approach for obtaining information about the hydrological response of catchments under either existing or potential future conditions. The successful implementation of a catchment modelling system requires careful parameter evaluation during the system calibration. Evaluation of spatially variable control parameters has been of increasing concern as a result of an increased awareness of the inappropriateness of assuming catchment averaged values for assessing water quality aspects of the catchment response.