Priozersky District
The entire river was a boundary between the Kingdom of Sweden and Novgorod Republic as defined in 1323 in the Treaty of Nöteborg. The higher reaches of the Saijanjoki (Volchya) to the south of the Tungelmanjoki (Smorodinka) and the Tungelmanjoki itself constituted part of the Russia-Finland border in 1811–1940. Now that stretch of the Volchya River divides Priozersky and Vyborgsky District from Vsevolozhsky District, while the Smorodinka marks another part of the boundary between Priozersky District and Vsevolozhsky District.