Regional water situation

Ostrobothnia 21.4.

In the Ostrobothnia region, water levels of rivers are declining slowly as a result of the early spring peak. After a winter low in snow, early melting and low precipitation in the spring, the water levels are already close to the water levels typical of early summer. Without heavy rainfall, they will continue to decline towards the summer. The water levels of lakes in the region are also low. According to forecasts, the water level of Lake Lappajärvi will remain below the target level of regulation for the entire summer. The water level of Lake Lestijärvi will also decline all summer and end up at an abnormally low level. According to forecasts, the water level of Lake Pyhäjärvi will remain lower than average but will not reach an exceptionally low level.

In Iijoki, water levels are declining as a result of the early spring peak that occurred already in March and was lower than usual. Typically, spring floods would only occur in Iijoki at the turn of April and May. The water levels of rivers and lakes will also fall lower than usual in Iijoki unless the rest of the spring is heavy in precipitation. The flow regulation of Lakes Kostonjärvi and Irnijärvi will be kept approximately at 4 m3/s for April and May.