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Explore a map and photos of areas in the Columbia River Basin where dams block passage of anadromous fish | Northwest Power and Conservation Council Header Menu Contact Search About Integrating energy and the environment in the Columbia River Basin About the Council Mission and Strategy Members and Staff Bylaws Policies Careers / RFPs News See what the Council is up to. Read the latest news Read All News Press Resources Newsletters International Columbia River Explore News by Topic Fish and Wildlife Planning Salmon and Steelhead Wildlife Energy Planning Energy Efficiency Demand Response Fish and Wildlife The Council works to protect and enhance fish and wildlife in the Columbia River Basin. Its Fish & Wildlife Program guides project funding by the Bonneville Power Administration. Fish & Wildlife overview The Fish and Wildlife Program Fish and Wildlife Program 2018/19 Amendment Process 2014 Columbia River Basin Fish and Wildlife Program Subbasin Plans Project Reviews and Recommendations Independent Review Groups Independent Economic Analysis Board (IEAB) Independent Scientific Advisory Board (ISAB) Independent Scientific Review Panel (ISRP) Forums and Workgroups Asset Management Subcommittee Ocean and Plume Science and Management Forum Regional Coordination Science and Policy Exchange Toxics Workgroup Topics Adaptive Management Anadromous Fish Mitigation Blocked Areas High-level Indicators Invasive and Non-Native Species Predation Protected Areas Research Plan Resource Tools and Maps Sea Lions Sturgeon The Pike Problem Energy The Council develops a plan, updated every five years, to ensure the region’s power supply and acquire cost-effective energy efficiency. Energy overview THE NORTHWEST POWER PLAN The 2021 Northwest Power Plan The Seventh Power Plan Planning Process and Past Power Plans TECHNICAL TOOLS AND MODELS Regional Portfolio Model Generation Evaluation System Model (GENESYS) Energy Advisory Committees Conservation Resources Advisory Committee Demand Forecast Advisory Committee Demand Response Advisory Committee Generating Resources Advisory Committee Natural Gas Advisory Committee Resource Adequacy Advisory Committee System Analysis Advisory Committee Regional Technical Forum RTF Policy Advisory Committee System Integration Forum Resource Strategies Advisory Committee (Not Active) Energy Topics Energy Efficiency Demand Response Power Supply Resource Adequacy Energy Storage Hydropower Energy Forums and Workgroups Pacific NW Demand Response Project Northwest Wind Integration Forum (Archive) Meetings See current Council meeting Today in Butte › See all meetings › Recent and Upcoming MeetingsSwipe left or rightMay 2019Thu16 9:30 am—11:30 am Demand Forecast Adv. Committee Webinar: Climate Change Discussion May 2019Wed22 9:30 am—3:00 pm Fish and Wildlife Committee Meeting May 2019Wed29 9:30 am—12:00 pm Fish and Wildlife Committee Meeting May 2019Fri31 9:30 am—2:30 pm RTF Policy Advisory Committee Jun 2019Mon03 10:00 am—3:00 pm Natural Gas Advisory Committee Jun 2019Tue04 9:30 am—3:45 pm Demand Response Advisory Committee Jun 2019Wed05 9:00 am—3:00 pm Pacific NW Demand Response Project Meeting Jun 2019TueWed11 - 12 Council Meeting Jun 2019Tue18 9:00 am—11:00 am Hatchery Workgroup Jun 2019Mon24 9:00 am—12:00 pm Council Work Session for Fish and Wildlife Program Amendments Jun 2019Thu27 10:30 am—12:00 pm Asset Management Subcommittee Jul 2019TueWed16 - 17 Council Meeting Jul 2019Thu25 9:30 am—3:30 pm Conservation Resources Adv. Committee - 2021 Power Plan Aug 2019Mon12 1:00 pm—5:00 pm Regional Coordination Forum Aug 2019TueWed13 - 14 Council Meeting Aug 2019Wed21 9:30 am—3:45 pm Demand Response Advisory Committee Sep 2019Wed11 9:00 am—3:00 pm RTF Policy Advisory Committee Meeting Sep 2019TueWed17 - 18 Council Meeting Oct 2019TueWed15 - 16 Council Meeting Oct 2019Thu24 9:30 am—3:30 pm Conservation Resources Advisory Committee Oct 2019Wed30 9:30 am—3:45 pm Demand Response Advisory Committee Nov 2019TueWed12 - 13 Council Meeting Dec 2019Fri06 9:00 am—3:00 pm RTF Policy and Advisory Committee Meeting Dec 2019TueWed10 - 11 Council Meeting View Council Meetings View all Meetings View all council meetings View full calendar Reports and Documents Browse reports and documents relevant to the Council's work on fish and wildlife and energy planning, as well as administrative reports. Browse reports Reports by Topic Power Plan Fish and Wildlife Program Subbasin Plans Financial Reports Independent Scientific Advisory Board Independent Scientific Review Panel Independent Economic Analysis Board Columbia River History Project CloseBlocked Area Mitigation Reintroducing salmon and steelhead to habitat blocked by dams Share

Some hydropower dams in the Columbia River Basin block passage of anadromous fish, primarily but not exclusively salmon and steelhead, from large areas of historic spawning and rearing habitat.

It is a principle of the Northwest Power Act to protect, mitigate, and enhance fish and wildlife, including related spawning grounds and habitat, of the Columbia River and its tributaries that have been affected by dams. The Act specifically calls out the impact of dams on anadromous fish, which the Act says “are of significant importance to the social and economic well-being of the Pacific Northwest and the nation.”

The program recognizes the blocked area above Grand Coulee and Chief Joseph dams in Washington state, and also other blocked areas in the Columbia River Basin, including in the Willamette and Deschutes river basins of Oregon.

The Council has supported reintroduction of anadromous fish to blocked areas since the 2000 revision of the fish and wildlife program, recommending that reintroduction be pursued where it is determined to be feasible. Consistent with the Power Act, the Council believes that the abundance of native fish species should be restored throughout blocked areas where original habitat conditions exist or can be feasibly restored or improved.

This mitigation may include the use of resident fish, anadromous fish reintroductions, wildlife, habitat, and projects to identify or resolve data gaps. The program gives highest priority to weak, but recoverable, native fish populations identified by state and federal fish and wildlife agencies and tribes. Next in priority would be actions that investigate reintroductions of salmon and steelhead into blocked areas, where feasible, in areas where they once were present but are not today.

Reintroduction could have important economic benefits from increased fisheries and tourism. For tribes, reintroduction could restore harvest opportunities and also would have cultural and spiritual importance.

Related links:Columbia River History page on the  impacts of dams  on salmon and steelheadU.S. Entity’s  recommendation  on the future of the Columbia River Treaty, which includes the proposal to jointly investigate returning fish to the Canadian ColumbiaTopics  Fish and wildlife Tags  Blocked Area Mitigation Above Chief Joseph and Grand Coulee dams


Above dams on Willamette River tributaries


Above Pelton and Round Butte dams on the Deschutes River dams Sign up for our Newsletter
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