Large-sized races of kokanee spawn in steep, short sections of streams tributary to the "West Arm" of Kootenay Lake near Nelson. The depth and velocity of spawning sites were determined in dissimilar stream gradients and substrates in three streams in order that criteria for spawning by kokanee might better be understood, particularly as it relates to protection and enhancement. There was no apparent correlation between fish concentration and depth and velocity associations. There was no evidence of preference for holding or spawning in any depth or velocity, however, velocities >3.8 fps were avoided. Data from other streams indicate kokanee presence in depths from 0.25 to >3 ft and in velocities from 0 to 2.6 fps. Data generated in this study indicated occurrence in depths from 0.2 to 2.3 ft and in velocities from 0.2 to 3.2 fps. The slightly higher velocity tolerated by the "West Arm" fish may reflect the larger average size of the fish (>30 cm). The spawning habitat investigated could well fit the designat
Tredger, D., Taylor, G.D.. 1977. Kokanee Site Analysis for Harrop Redfish and Kokanee Creeks - Tributaries of the "West Arm" of Kootenay Lake near Nelson B.C.. Fisheries Report. FRN67
Topic: Fish and Fish Habitats
Keywords: kokanee salmon, Kootenay Lake, spawning, habitat
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