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| Selected hydrography of the Klamath Basin, including the distinction between the upper
(upstream of Iron Gate Dam) and lower basin (downstream of Iron Gate Dam). Locations of dams in the Klamath
Hydroelectric Project that are to be removed in 2023 (Iron Gate Dam, Copco1 and 2 Dams, and J.C. Boyle Dam)
are highlighted in red, and other major dams in the Klamath Basin are shown. The current upstream extent of
anadromous fishes is Iron Gate Dam. ODFW map illustration Dec. 2022. Click image to enlarge. |
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| Selected hydrography of the Upper Klamath Basin with Klamath River mainstem dams. The
Upper Klamath Basin is defined as that portion of the Klamath Basin above the site of Iron Gate Dam, which
excludes anadromous fishes. Dams (Iron Gate, Copco 1 and 2, and J.C. Boyle Dam) planned to be removed in 2024
are highlighted in red. Potential existing streams with suitable anadromous fish habitat are highlighted in
red.ODFW map illustration Dec. 2022. Click image to enlarge. |
Four hydroelectric dams (Iron Gate Dam, Copco 1 and 2, and J.C. Boyle Dam) were removed in 2024, opening hundreds of
miles of historical habitat for Chinook Salmon, Coho Salmon, Steelhead Trout, and Pacific Lamprey that had been blocked
for over 100 years. Oregon Department of Fish and Wildlife and its partners are monitoring the repopulation of fish into
this historic habitat. This page contains monitoring updates, reintroduction plans, and reports about this project.
Bartholomew JL, Alexander JD, Alvarez J, Atkinson SD, Belchik M, Bjork SJ, Foott JS, Gonyaw A, Hereford ME, Holt RA,
McCovey Jr B, Som NA, Soto T, Voss A, Williams TH, Wise TG and Hallett SL (2023) Deconstructing dams and disease:
predictions for salmon disease risk following Klamath River dam removals. Front. Ecol. Evol. 11:1245967. doi:
10.3389/fevo.2023.1245967
Full citation
Hahlbeck, N., Tinniswood, W. R., Sloat, M. R., Ortega, J. D., M. A.Wyatt, Hereford, M., Ramirez, B. S., Crook, D. A.,
Anlauf-Dunn, K. J., & Armstrong, J. B. Contribution of warm habitat to cold-water fisheries. Conservation Biology.
2022;36:e13857. https://doi.org/10.1111/cobi.13857
Full citation
Hahlbeck, Nick, Kara J.Anlauf-Dunn, Stanley J.Piotrowski, Jordan D.Ortega, William R.Tinniswood, Erika
J.Eliason, Kathleen G.O'Malley, et al. 2023. “Habitat Fragmentation Drives Divergent Survival Strategies of a Cold-Water
Fish in a Warm Landscape.” Ecosphere14(7): e4622. https://doi.org/10.1002/ecs2.4622
Full citation
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