Lodeynoye Pole
On August 1, 1927, the uyezds in Leningrad Oblast were abolished, and Lodeynopolsky District with the administrative center in the town of Lodeynoye Pole was established. It was a part of Lodeynoye Pole Okrug of Leningrad Oblast and included areas formerly belonging to Lodeynopolsky Uyezd. In the 1927, a large-scale construction of the Lower Svir Hydroelectric Station started, predominantly by using prisoners. For this purpose, in 1931 the concentration camp Svirlag was established, with the headquarters in the settlement of Svirstroy. In 1931, Svirstroy was granted urban-type settlement status. Between September 1941 and June 1944, during World War II, the northern part of the district was occupied by Finnish troops. Due to the damage cause by the war two of the selsoviets (Kanomsky and Mandrogsky Selsoviets) were abolished in 1950.