Construction of the Cheboksary hydroelectric power station in the Chuvash ASSR. Hydrologists A. S. Solomonova, L. A. Emelyanova and others are observing, making measurements, recording. Landscapes of the Volga River. Views of the village of Novinsky, the village of Sidelnikovo. A town of builders on the outskirts of the town of Mariinsky Posad.