Walls of the Uspenskiy Monastery on the shore of the lake

Along its entire length, the walls near the lake shore are reinforced with massive brick buttresses to prevent the wall from tilting and collapsing into the lake. The problem arose after the construction of the North Dvina Canal (Canal named after the Duke of Württemberg, Chief Directorate of Communications in Russia) in the 1820s. The lake became part of this canal, causing the water level in it to rise by more than a meter.