Fish-Friendly Upgrades at Hydropower Facility

Brascan Power New York recently completed the installation of new fish-friendly “trashracks” and other repairs at its Feeder Dam Hydroelectric Development on the Hudson River in South Glens Falls, New York. The $650,000 enhancement is designed to benefit the native fish population.

“The new one-inch-spaced trashracks help prevent movement of fish downstream of the Feeder Dam facility, and help enhance fish propagation,” said Tom Uncher, Brascan Power New York general manager, Hudson River region, Queensbury. “The new, narrow-spaced trashracks replace the original four-inch-spaced trashracks, and prevent fish from passing through the hydro turbines at this facility.” The project, which was completed in late January, was undertaken as part of Brascan Power’s Federal Energy Regulatory Commission (FERC) operating license for this 5 MW facility. Elements of this repair project included the removal of the old trashracks, repair work to the existing concrete support piers for the support steel, and installation of 185-lineal feet of one-inch-spaced steel trashracks. Brascan Power also installed stainless steel bubbler/blow-off air piping behind the racks to assist in cleaning debris from the trashracks. In addition, as part of the FERC relicensing settlement, a new stainless steel, 24-inch diameter fish bypass was installed. This allows for harm-free fish migration downstream, according to the company. Brascan Power also replaced the existing deteriorating concrete trash sluice with a new pre-cast concrete box culvert that is used to remove passing debris and ice from the intake area. While the plant was in the dry for the trashrack installation, Brascan Power took the opportunity to inspect and make repairs to the underwater sections of the facility to ensure safe, continued operation.
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