Regional water situation

Ostrobothnia 2.6.

The water levels of rivers in Ostrobothnia are at average early summer levels or slightly lower and declining slightly, as is typical of the season. The decline will continue throughout June unless there is heavy rainfall. The water levels of lakes in the region are still partly low for the season because of the low amount of snow in the winter and the early spring. The water level of Lake Lappajärvi is approximately 25 cm lower than average, and according to forecasts, it will remain below the target level of regulation for the entire summer. The water level of Lake Lestijärvi is 30 cm lower than usual and nearly record-low for the season. It will keep declining all summer.

In River Iijoki, the water levels of rivers and lakes are lower than usual due to the early spring peak, but not exceptionally low. They are declining slightly as is typical of the season, and according to the forecasts, they will keep declining throughout June unless rainfall changes the situation. The flow regulation has been raised at 25 m3/s in Lake Kostonjärvi and at approx. 16 m3/s in Lake Irnijärvi.

In the regions of South and Central Ostrobothnia, the soil is quite dry and groundwaters are low.