ISBN: 9463958258 9789463958257

Category: Unavailable

Page count: 39

This technical report describes the concepts of the CASCADE_TOXSWA model as well as the technical implementation. CASCADE_TOXSWA is the landscape version of the TOXSWA model. TOXSWA is a so-called exposure model that simulates the fate of substances in surface water in single ponds, ditches and streams. The model is used in the authorization procedures for plant protection products in the Netherlands and in the EU. CASCADE refers to its use in simulating substance fate in and between the interconnected watercourses in a (sub- ) catchment. The model has been developed to assess the fate of pesticides in an interconnected system of watercourses in a dynamic hydrological situation. CASCADE_TOXSWA can be used as a stand-alone version, but also as part of a landscape scale system model, to assess e.g. the effect of pesticide use on aquatic organisms. This report describes the concepts of CASCADE_TOXSWA with a focus on the functionalities added as compared to the single watercourse model TOXSWA.