Combined approach to surface water management

Although the WFD combined approach is a key component of integrated water management, its use is not sufficiently operational, and so the Combined Approach Methodology manual has been adopted in Croatia. Guidelines for mixing zones and prognostic models of the EU have contributed to the implementation of the combined approach, in addition to the operational and investigative monitoring. The problem of application is presented on WWTP recipient examples in the Sava River Basin. The aim of this paper is to provide a critical analysis and contribute to practical implementation of the combined approach.