Kuybyshev Reservoir or Kuybyshevskoye Reservoir (Kuybyshevskoye Vodokhranilishche), sometimes called Samara Reservoir and informally called Kuybyshev Sea, is a reservoir of the middle Volga and lower Kama in the Chuvash Republic, Mari El Republic, Republic of Tatarstan, Samara Oblast and Ulyanovsk (...)