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- W2883703936 abstract "Abstract Anadromous salmon were extirpated from most of the Okanagan basin by the 1950s due to river engineering projects designed to address problems associated with flooding and irrigation supply, but, in so doing, precluded fish passage upstream. Efforts to repatriate Sockeye salmon into Okanagan Lake and its many tributaries are currently underway. Lower Vernon Creek might serve as spawning habitat, but it also experienced extensive channelization and flow modification. Using a range of field methods and hydraulic modeling simulations, this study shows that three of five reaches through the city of Vernon could provide habitat for Sockeye salmon given the expected flow hydraulics during spawning season. However, bed (substrate) armoring is a key constraining factor. Channel straightening increased the available stream power, which caused bed and bank erosion. Subsequent emplacement of riprap and concrete walls to prevent erosion served to cut off access to a natural supply of mobile sand and gravel, which are essential for spawning. Modest rehabilitation efforts to improve the geomorphic character of the heavily urbanized reach through Polson Park may greatly enhance the overall capacity of Lower Vernon Creek to support anadromous salmon." @default.
- W2883703936 created "2018-08-03" @default.
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- W2883703936 date "2018-01-01" @default.
- W2883703936 modified "2023-09-23" @default.
- W2883703936 title "Urban Stream Geomorphology and Salmon Repatriation in Lower Vernon Creek, British Columbia (Canada)" @default.
- W2883703936 doi "https://doi.org/10.1016/b978-0-12-811951-8.00005-9" @default.
- W2883703936 hasPublicationYear "2018" @default.
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