Lake Ladoga
The Neva River, which connects Lake Ladoga with the Baltic Sea, serves as the northwestern border of the district. The territory of the district is divided between the drainage basins of the Neva, of Lake Ladoga, and of the Volkhov River, a major tributary of Lake Ladoga. The main rivers inside the district are the Mga and the Tosna (left tributaries of the Neva), the Naziya (a tributary of Lake Ladoga), and the Olomna (a left tributary of the Volkhov). Large areas of the district are covered by swamps. The western part of the district is essentially an urbanized area adjacent to the city of St. Petersburg.