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Report: Footprint Impacts of BC Hydro Dams on Rainbow Trout in the Columbia River Basin, British Columbia
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The Fish and Wildlife Compensation Program - Columbia Basin has undertaken a
project to assess the footprint impacts of BC Hydro dams in the Columbia River drainage in
British Columbia. This review includes a primary productivity assessment, habitat gain/loss, and several species impact reviews. This report provides an impact assessment for rainbow trout. Available information on population status before and after dams is summarized and compensation options for addressing losses are provided.
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Author: Fish and Wildlife Compensation Program - Columbia Basin; Steve Arndt
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Old Reference System: FWCP Fish Wildlife Compensation Program - Columbia
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Date Published: Sep 2009
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Report ID: 37259
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Audience: Government and Public
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In the Columbia River basin, rainbow trout occupy a diverse range of habitats from small headwater streams to large lakes and reservoirs. In the large reservoirs of the basin, they occupy an important niche, along with bull trout Salvelinus confluentus, as the top piscivore, preying primarily on kokanee Oncorhynchus nerka. Rainbow trout also provide direct benefits to people in the form of recreational fisheries and food that contribute significantly to local culture and economies (e.g., Arndt 2004b, Andrusak 2007). The potential impact on specific rainbow trout populations was a major concern to residents and fishery managers when the dams were built.
The purpose of this report is to:
- review rainbow trout distribution within the basin,
- summarize life history traits in relation to potential limiting factors,
- summarize footprint impacts likely to affect rainbow trout,
- assess the status of individual populations (by dam unit) before and after dams, and
- provide compensation options and estimated costs where populations have been negatively impacted by dams.
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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 - Rainbow Trout - Oncorhynchus mykiss |
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Region - Kootenay |
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Fish and Fish Habitat - Impact Assessment |
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Fish and Fish Habitat - Stock Assessment |
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Watershed Groups - 300 - Columbia |
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Watershed Groups - 330 - Pend d'Oreille |
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Watershed Groups - 340 - Lower Kootenay |
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Watershed Groups - 349 - Upper Kootenay |
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Watershed Groups - 390 - Spillimacheen |
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Program Specific Area - FWCP |
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