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Report: Hill Creek Spawning Channel 2019-20 Activity Report FLNRORD - FWCP Section COL-F20-F-3008-DCA
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If you have any questions on the information presented, or require additional report data or attachments, please contact the Report Contact
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The Hill Creek Spawning Channel project is ongoing since the early 1980s as compensation for lost kokanee and rainbow trout spawning habitat above Revelstoke Dam. It helps sustain Arrow Reservoir kokanee abundance, which provides a forage base for bull trout and larger rainbow trout. Healthy fish stocks provide angling opportunities and economic benefits. Recently, the channel has also been a source of Kokanee eggs collected by the Freshwater Fish Society of BC for stocking into Kootenay Lake.
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Author: Steve Arndt, Eva Schindler
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Old Reference Number: COL-F20-F-3008-DCA
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Date Published: Mar 2020
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Report ID: 59016
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Audience: Government and Public
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All required operations were completed for Hill Creek spawning channel in the 2019-20 fiscal including Kokanee fry counts and Rainbow Trout redd counts in the spring, settling pond and gravel cleaning in the summer, and adult Kokanee counts and sampling in the fall. Winter monitoring and ice removal ensured adequate flows during incubation. Water monitoring and control to reduce sediment and optimize incubation conditions continued throughout the year. Fry production in 2019 was 3.26 million with an egg to fry survival of 58%. Rainbow Trout redd counts totaled 114 of which 30 were classed as large piscivore redds. The total fall return of adult Kokanee to Hill Creek was 130,000, with 63,030 adults admitted into the spawning channel for a potential egg deposition of 6.3 million. The average size of Kokanee (22 cm) was small leading to a low fecundity (<250 eggs/female). The majority of spawning fish were age-3 (80%) with the remainder mostly age-2. The channel was also used by the Freshwater Fisheries Society of BC for an egg collection station (45,206 adults), and 5000 adults from Hill Creek were given to Okanagan Nation Alliance.
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Report Type
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Fish and Aquatic Habitat Information |
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Subject
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Fish Species - Bull Trout - Salvelinus confluentus |
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Fish Species - Kokanee - Oncorhynchus nerka |
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Fish Species - Rainbow Trout - Oncorhynchus mykiss |
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Region - Kootenay |
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Fish and Fish Habitat - Angler Use |
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Fish and Fish Habitat - Enumeration |
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Fish and Fish Habitat - Monitoring |
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Fish and Fish Habitat - Restoration |
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Fish and Fish Habitat - Salvage |
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Fish and Fish Habitat - Stock Assessment |
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Watershed Groups - 300 - Columbia |
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Program Specific Area - Kootenay Compensation Program |
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