Regional water situation

Ostrobothnia 11.9.

The rainfall in recent days has increased the water levels and discharges of rivers in North Ostrobothnia and at River Iijoki. Water levels have reached high levels, especially around Rivers Kalajoki and Siikajoki. At Kalajoki, the water level of Lake Settijärvi has risen, and the water level of Lake Kuonanjärvi is about to cross the regulation limit. No heavy rainfall has been forecast in the region for the weekend, meaning that the water levels will start declining next week.

At Iijoki, water levels of rivers are still higher than usual and discharges are high, although they have decreased since they peaked in August. The water levels of the largest unregulated lakes in Iijoki are high for the season: The water level of Lake Pudasjärvi is around one metre higher than average and the water level of Lake Jongunjärvi 60 cm higher than average, and they are starting to rise again. The flow regulation of Lake Kostonjärvi is around 30 m3/s and that of Lake Irnijärvi around 20 m3/s, which also keeps the discharges and water levels of lakes high downstream.