Patent ID: 6588370
Filing Date: 2003-07-08
Classification: E02B,Y02A

Abstract:
A labyrinth weir and pool fishway for providing a pathway around obstacles for fish, comprised of:a pair of spaced fishway walls, and a plurality of weirs located between the fishway walls for dissipating flow energy of water flowing through the fishway, said weirs being disposed in longitudinally spaced relation along the fishway and each consecutive pair of weirs defining a pool therebetween; each of said weirs comprising:a center wall having first and second middle walls attached to the center wall on opposite sides thereof so that the first and second middle walls form an acute angle facing away from the flow of the water; and first and second outer walls attached at one edge thereof to said first and second middle walls respectively and at the opposite edges to a respective one of said fishway walls, said first middle and outer walls and said second middle and outer walls each forming an angle therebetween facing towards the flow of the water which is less than 180Â°.