Островский район
The district lies in the basin of the Velikaya River. The Velikaya itself crosses the district from south to north. The principal tributary of the Velikaya in the limits of the district is the Vyada, which forms the border with Ostrovsky District. The largest lake, Lake Belaya Struga, has an area of . About 5% of the district's territory is occupied by swamps. The eastern part of the district is flat; the western part is hilly.