Regional water situation

Ostrobothnia 8.7.

The heaviest rainfall in recent days has occurred in Ostrobothnia and in the upper reaches of water bodies in South Ostrobothnia. Rainfall increased the water levels of Rivers Teuvanjoki and Lapväärtinjoki by around one metre in a few days, which corresponds to a typical rise in water levels caused by heavy rainfall in the summer in these water bodies. Rainfall has also raised the water levels of rivers and lakes in the upper reaches of Rivers Kyrönjoki and Lapuanjoki. Little rainfall is forecast for the rest of the week, so the water levels in rivers will start declining.

Of the lakes in the region, the water level of Lake Lappajärvi is approximately 30 cm lower than average, and according to forecasts, it will remain below the target level of regulation at least in July. The water level of Lake Lestijärvi is around 30 cm lower than usual and nearly record-low for the season. According to the forecast, the water level will decline by 0–10 cm in July.

In Iijoki, the water levels of rivers and lakes are typical of the season. The water levels of Lake Pudasjärvi and Lake Jongunjärvi are close to their average levels of the season. The discharges of Rivers Kiiminkijoki, Siikajoki and Pyhäjoki are slightly lower than usual. According to the forecast, rainfall next week will remain low, and the water levels will continue to decline.