 The central and the southern parts of the district drain into the Luchega River, the Beryoza River, and the Obsha River, the tributaries of the Mezha River, a tributary of the Daugava.The Luchega and the Beryoza have their source in the district, and the Obsha crosses the south of the district.About 60% of the area of Oleninsky District is forested.