The integrated function of these riverine systems ensures the development of self-sustaining aquatic populations, flood protection and reduction of pollution. The DRBMP reports the area of floodplains/ wetlands to be reconnected by 2015 for both the Danube River and its tributaries. The inter-linkage with national River Basin Management Plans (RBMP) is vital for wetland reconnection, as, for example, significant areas arc expected to be reconnected to rivers with catchment areas <4,000 km’.