Prediction of flowing water pollution on the basis of landscape metrics as a tool supporting delimitation of Nitrate Vulnerable Zones

► There is significant relation between land cover and nitrogen load in river. ► Cumulative watersheds are a good field for research into this relationship. ► CORINE Land Cover is valuable tool as decisions support for water protection. ► Both the composition and the configuration of patches must be taken into account. ► Agriculture-related pollution is decisive for the quality of waters.