Patent ID: 6325570
Filing Date: 2001-12-04
Classification: E02B,Y02A

Abstract:
A fishway system including a lock-type fishway (4,8,9), which includes:a first part (9) from which there is a connection (12) to lower water (2) for discharging water therethrough to the lower water and thereby lure fishes to said first part;a second part (4) from which there is a connection (6) to upper water (1);a first pipe (8) between the first part (9) and the second part (4); andmeans (13, 7) for closing periodically the connection (12) from the first part (9) to the lower water (2) and to fill the first pipe (8) with water for bringing the fishes gathered in the first part (9) from the first part to the second part (4) and from there onwards to the upper water (1); andin parallel relationship to the fishway (4, 8, 9) between the upper water (1) and the first part (9) of the fishway, a second pipe (20, 24, 25) and therein a turbine (23) for conducting the luring water therethrough and for recovering energy from the luring water.