Dataset showing water quality in watercourses. The mapping is carried out on behalf of the regional water authority (the county governor). Administration in accordance with the Water Framework Directive. Information of relevance in connection with land use measures in order to improve or maintain good water quality.

Hydrography in the context of this data specification is involved with the description of the sea, lakes, rivers and other waters, with their phenomena and all hydrographic-related elements. For mapping purposes, it includes a representation of physical elements – both natural and artificial. For reporting requirements of EC water-related directives it includes WFD surface water bodies. For spatial analysis and modelling, it includes a topologically-sound network of rivers and canals.

This dataset includes the hydroelectric power system as administered by the Norwegian Water Resources and Energy Directorate. The Norwegian Water Resources and Energy Directorate's administration system also deals with dams for purposes other than hydroelectric power production. Regulated lakes affect the watercourses irrespective of purpose, and hence they are also included in our administration systems. The dataset includes all dams and regulated lakes irrespective of purpose. The specification includes both operational and non-operational plants. The Norwegian Water Resources and Energy Directorate deals with applications for licences pursuant to the Energy Act and/or watercourses legislation for the construction of hydroelectric power stations and other plants along watercourses. The undeveloped plants include projects dealt with in the watercourse licensing process and the residual potential where no licence has been applied for.

In the MULTISOURCE/DigiVEIVANN project, we are testing a rain garden as a nature-based solution for water treatment (NBSWT) to treat road runoff.