FIELD: water-development works. SUBSTANCE: device has collecting reservoir 1 separated from the flow by guard 2 having through hole 3. Drain chute 4 of L-shaped form is connected to this hole. Drain chute 4 is provided with horizontal shelf 8 and vertical shelf 9. Drain chute 4 is supported by upright 6 provided with guide clamps 7. Lug 5 is secured on the outside of guard 2 immediately adjacent to hole 3. Additional chute 12 is hydraulically connected with collecting reservoir 1. Chute 12 is mounted on channel bottom and is rigidly secured to the outer surface of the wall. EFFECT: enhanced reliability. 2 cl, 2 dwg
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