Spring floods on the Neris river in the Vilnius neighborhood
Above Vileika located Vileika reservoir supplies water to Minsk (Minsk Vileika-water system) and provides a low pressure Vileika HPP. Typically spring flooding begins in mid-March and lasts until mid-May. Natural landslides occur mostly where rivers undermine the base of steep valley banks during spring floods. However, after construction of the Kaunas Hydroelectric Power Station dam, the magnitude and energy of spring floods decreased and the threat of landslides diminished. The Neris is a unique river, because in the territory of Lithuania practically all the bed is natural, except for a segment of several kilometres in the centre of Vilnius where the banks of the river are fortified.