Lake Ezerishche is located in the Gorodok district of the Vitebsk region, on the border with the Pskov region. (RF), 42 km north of the city of Gorodok, near the urban settlement. Ezerishche and belongs to the river basin. Obol (another tributary of the Western Dvina), which flows from it. A hydrological reserve of local importance, Ezerishche, was created on the basis of the lake. The lake is eutrophic, thermokarst type. The structure is complex, the coastline is highly indented and forms many bays, capes, spits, and peninsulas.