FIELD: hydraulic engineering. SUBSTANCE: device includes water permeable fish protecting screen 1 installed in water inlet cannel 2 at an angle to cannel axis. Fishway 4 adjacent to screen 1 end part is made of members 3 with non-symmetric cross section and surface of double curvature. Side of member 3 facing fishway 4 is of larger curvature than that of opposite side. With water stream running against screen 1, zone of higher stream speed is formed, since side of member 3 facing fishway 4 is of larger surface curvature than that of opposite side. The fish from the zone of higher stream speed is pulled down towards fishway 4. Water through gaps between members 3 of screen 1 enters water intake structure. EFFECT: fish protection. 1 dwg
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