Patent ID: 6715959
Filing Date: 2004-04-06
Classification: E02B,Y02A

Abstract:
A fish transit system for assisting fish in overcoming a stream obstructions, comprising:an upstream fish transit ladder, comprising: a plurality of open pools, the pools being spaced apart a vertical distance which may be easily jumped by the fish and each pool having an outer perimeter wall adapted to allow water to overflow said outer perimeter wall from pool to pool, said upstream fish transit ladder having an upper end at or near the top of the stream obstruction and a lower end at or near the surface of said stream on the downstream side of the stream obstruction, water flow from the top end of the upstream fish transit ladder to the bottom end of said ladder via overflow of water from pool to pool over said outer perimeter wall of each pool: a downstream fish transit flume, comprising: a flume upper end at or near the top of said stream obstruction, a flume lower end at or near the surface of said stream on the downstream side of said stream obstruction, and water flow from said the flume upper end to the flume lower end; and a support structure on the downstream side of said stream obstruction wherein said support structure supports both the upstream fish transit ladder and the downstream fish transit flume and connects both the upstream fish transit ladder and the downstream fish transit flume to the downstream side of said stream obstruction.