The long and narrow Valley of Gudbrandsdalen experiences a surplus of sediment and debris from its many side valleys. During recent years a number of severe weather events have triggered landslides and flash floods, subsequently causing considerable damage to agricultural land and destruction of infrastructure .
The traditional approach to reducing these risks has been the construction of grey infrastructure to include dams and retention basins. However, there is a desire to implement NBSs to not only reduce the risk of flooding, but also to enhance ecosystem biodiversity, protect fish stocks and game population. The Oppland County Authority is leading the transition to a more NBS approach through their Regional Master Plan (RMP) which is in the process of being ratified by local politicians. The RMP includes the construction of new retention basins combined with biotope measures.
Further to these efforts is a focus on the need to improve policy for land-use planning and increase knowledge capacity of local actors with regard to effective logging management and gravel outtake on riverbanks in side rivers. The Oppland County Authority is also at the forefront to foster cooperation between all the stakeholders in the valley and the national authorities. The ratification of the RMP will trigger funding mechanisms from municipal, regional and national authorities.
Photos from the Valley of Gudbrandsdalen, Norway after the flood in May 2013