Critical loads for surface waters - chemical criteria for inputs of strong acids

Abstract

Chemical criteria have been established for the critical loads of strong acids to surface waters in Norway. A complete set of data is available for all the counties with the exception of North Trøndelag, Nordland, Troms og Finnmark excluding the minicipality of South Varanger. Colored maps for Southern Norway have been prepared showing quantitative critical loads for acidic developments, area where the critical loads is exceeded, and the regional runoff (export) of sulphur. At present, the critical load has been exceeded in approximately 30% of southern Norway. The most affected counties are East Agder, West-Agder and Rogaland.