The invention relates to the field of hydropower and can be used in connection with the design, construction and operation of diversion power stations with a capacity of up to 100 MW. The object of the invention is to place a diversion hydropower plant cascade in the bed of a water stream that flows through the floodgates of a dam which creates a reservoir. The technical result of the invention is increased economic efficiency of the hydropower plant cascade. In the diversion hydropower plant cascade according to the invention, which comprises a reservoir, a dam, a reinforced concrete channel, hydroelectric turbines consecutively installed in the channel, and electric generators, the reinforced concrete channel is situated in the tailwater of the dam that creates the reservoir, the distance from the diametric ends of the hydroelectric turbines to the upper edge of the channel is equal to one-third of the depth of the channel, the electric generators are placed outside the channel, to the side thereof, and the slope of the channel relative to the headwater is between 0.5 and 40 degrees.
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