The invention relates to the field of hydropower and can be used in the design, construction and operation of power plants derivational to 100 MW.; The object of the utility model is a cascade arrangement of a power line derivational aqueous stream merging via gateways dam forming the reservoir.; The technical result of the proposed utility model is to improve the economic efficiency of the cascade hydropower stations.; In cascade derivational hydroelectric containing reservoir, dam, concrete channel hydroturbine sequentially installed in the channel, electric generators, according to the utility model concrete channel is set in the downstream of the dam forming a reservoir, the distance from the diametral dimensions water turbines to the upper edge of the channel is one third of the channel depth , electric generators mounted outside the channel on the side of it, the channel of the upstream slope relative to 0.5 to 40 degrees.
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