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Granby Diversion Fish Passage and Ditch Improvement Project

FlyWater teamed with Freestone Aquatics to design, then later build, improvements to the Town of Granby’s existing water supply diversion on the Fraser River to allow for fish passage of both trout and native Mottled Sculpin. Funding for this project came from the USFWS under the National Fish Passage Program and Trout Unlimited. The Granby Diversion, an 80-foot-wide boulder structure, diverts the Town of Granby’s municipal water supply as well as irrigation water from the Fraser River. Our team took this project from inception, through survey, full design, and finally construction and reclamation. During construction our team incorporated the installation of a designed fish passage complex riffle in the Fraser River; which included specific rock cross channel structures, a defined thalweg, roughness and habitat rock strategically placed as per design, habitat improvements, reclamation, and revegetation of overbanks. Structures and habitat rock placement were installed under tight tolerances because of the swimming criteria of the mottled sculpin and a no-rise floodplain. This project was completed on time and within budget

Granby Diversion Fish Passage and Ditch Improvement Project

Granby Diversion Fish Passage and Ditch Improvement Project

Granby Diversion Fish Passage and Ditch Improvement Project

Granby Diversion Fish Passage and Ditch Improvement Project

Granby Diversion Fish Passage and Ditch Improvement Project

Granby Diversion Fish Passage and Ditch Improvement Project