 The area of the district split between the drainage basins of the Daugava River (the Atlantic) and the Volga River (the Caspian Sea).The rivers in the northern and in the western parts of the district flow into the Tudovka River, a right tributary of the Volga, and into the Osuga River, a left tributary of the Vazuza River.Both the Osuga and the Tudovka have their sources in the district.