Regional water situation

Kanta-Häme, Pirkanmaa and the Pori region 15.9.

In the Kokemäenjoki river basin, the discharges of rivers and the water levels of large, regulated lakes are mainly close to the average figures for the season. This week, rainfall may again raise river water levels, but according to forecasts, the rise will remain moderate.

The heavy rainfall in July dramatically increased the water levels of lakes in Northern Pirkanmaa. The water levels of Lake Keurusselkä and Lake Pihlajavesi in Keuruu are still 20–30 cm higher than the average seasonal levels. Farther south, the water levels of Lakes Mallasvesi and Längelmävesi are currently still about 5 cm below the seasonal average. In Valkeakoski, flow regulation has been restricted since March to prevent excessive decline of the water level of Lake Mallasvesi, and it has now been possible to increase the flow regulation slightly.

In the Karvianjoki river basin, the water levels of lakes and rivers are mainly at average seasonal levels, but may rise higher than average due to rainfall this week. In the northern part of the river basin, the water level of Lake Karvianjärvi has remained high since the rainfall in July.