Norway has applied the third Common Procedure for the Identification of Eutrophication Status of the OSPAR Maritime Area.
In OSPAR Region I, including the Norwegian and Barents Sea, a screening procedure was applied. In Region II, including the Skagerrak and North Sea, the comprehensive procedure was applied on watertype level. 96% of Region I was classified as non-problem area. In Region II the status had improved since the second application. Offshore and outer coastal areas were classified non-problem area. Inner coastal areas in the Skagerrak were classified problem area. For some coastal areas data are scarce and classification uncertain. Inner parts of the southern North Sea coast, freshwater affected water and and areas with naturally low oxygen levels were consequently classified potential problem area.