Fish Passage Systems

In 1997, Glosten supported CH2M Hill in the development of a “proof-of-concept” prototype fish diversion system. Our consulting efforts included the concept design for flexible connection/seal, dam interface system, wind & wave load confirmation, mooring system component selection, and weight and buoyancy calculations. We continue to provide naval architecture and marine engineering services to numerous projects of this type on the Columbia and Snake River systems.

Glosten recently assisted Washington Group on the Baker River Hydroelectric Project Fish Passage Project. Puget Sound Energy has developed plans for a new downstream fish passage facilities floating surface collector (FSC). The design includes a floating structure with lead nets that go from shore to shore and from the surface to the bottom of the reservoir. A minimum of 500 cfs in attraction flows will be provided by pumps in the FSC. This new design will trap a higher percentage and a wider size range of downstream migrants. Glosten provided engineering services on the hydrostatics, pump design and sizing, structural design, and marine related consulting.