Drammen river basin hub

At a glance

  • 17,114 km2 area

    third largest river basin in Norway

  • 500 to 2600 mm

    annual rainfall

  • 107

    hydropower stations

  • 2 TW

    installed capacity

  • 8.3 TWh

    annual production

Water users:

  • Energy production and demand
  • Expected increased water demand
  • Domestic water demand – population growth
  • Eco flow and biodiversity
  • Changes in seasonality, e.g. snow accumulation and melt
  • More frequent rainfall floods, less frequent snowmelt floods
  • Water stress during drought, lacking preparedness plans

Main challenges exacerbated by climate change: