Stream flow

The stream flow patterns in Sweden are expected to change in a future climate. This will result in both an increase and decrease as the change varies between different parts of the country, but also between different seasons.

Changes in water flow depend mainly on how precipitation will change, but also changes in temperature that affect snow melt and evaporation.

The annual average stream flow is expected to decrease in the eastern parts of Götaland and Svealand, while an increase can be seen in large parts of Norrland. High flows are expected to become less frequent in large parts of northern Sweden as the spring flood is projected to decrease.

However in parts of southern Sweden high flows may occur more regularly. In south-eastern Sweden low water flows are estimated to become more frequent in summertime due to increased evaporation.