Record: 1112 hm³
Height Record: 12.50 mIvankovo Reservoir or Ivankovskoye Reservoir (Russian: Ива́ньковское водохрани́лище), informally known as the Moscow Sea, is the uppermost reservoir on the Volga River, in Moscow and Tver Oblasts of Russia, located some 130 km north of Moscow. The dam of the reservoir is situated in the town of Dubna. The town of Konakovo is located on its southern coast. The reservoir is connected to the Moskva River by the Moscow Canal, and is the principal fresh water source for the city of Moscow. Its area is 327 km2 (126 sq mi), and the area of its drainage basin is 41,000 km2 (16,000 sq mi).