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| Keno Reservoir | |
|---|---|
| Name | Keno Reservoir |
| Location | Oregon, United States |
| Type | Reservoir |
| Inflow | Klamath River |
| Outflow | Klamath River |
| Basin countries | United States |
Keno Reservoir Keno Reservoir is a man-made impoundment on the Klamath River in southern Oregon, United States, created by a mid-20th-century hydroelectric project. The reservoir lies near the communities of Klamath Falls, Bonanza, and Keno and is central to regional water use, fisheries, and recreation in the Pacific Northwest.
Keno Reservoir occupies a reach of the Klamath River between the Upper Klamath Lake watershed and the Klamath Marsh complex, lying within Klamath County and adjacent to the Modoc Plateau. The reservoir is fed by tributaries including the Lost River and local creeks draining the Siskiyou Mountains and the Cascade Range foothills near Crater Lake. The impoundment alters natural flow regimes downstream toward the Klamath Basin and ultimately the Pacific Ocean, intersecting major regional drainage basins such as the Trinity River system via historic water exchanges. Nearby landmarks include the Oregon Route 66 corridor, the Union Pacific Railroad right-of-way, and the Klamath National Forest. Seasonal snowpack from the Mount Mazama area and precipitation patterns influenced by the Pacific Ocean and the Aleutian Low control inflow variability. Hydrologic connections link to irrigation districts like the Klamath Project and to downstream wetlands such as the Lower Klamath National Wildlife Refuge.
The site of the reservoir sits on land traditionally used by Modoc people and other Klamath Tribes long before Euro-American settlement. Euro-American exploration and settlement increased during the Oregon Trail era and the California Gold Rush, with subsequent development tied to railroad expansion by companies such as the Southern Pacific Railroad. The reservoir itself was formed following construction of a dam by entities associated with the Klamath Hydro Electric Corporation and later managed in coordination with federal agencies including the Bureau of Reclamation and the United States Fish and Wildlife Service. Federal initiatives during the New Deal and post-war electrification efforts influenced project timelines alongside private utility interests like PacifiCorp and regulatory frameworks such as the Federal Power Act. Legal and political disputes involving stakeholders including the Klamath Tribes, Hoopa Valley Tribe, environmental organizations like the Sierra Club, and state agencies in Oregon and California have shaped operations, often intersecting with litigation filed in U.S. District Court and policy actions by the United States Department of the Interior.
Keno Reservoir supports assemblages of native and introduced fish species, historically including lost river sucker and shortnose sucker populations prioritized by the Endangered Species Act and managed alongside sport fisheries for largemouth bass, crappie, and rainbow trout. Avian species utilize riparian habitat created by the impoundment, including American white pelican, bald eagle, and migratory populations protected under the Migratory Bird Treaty Act. Aquatic vegetation and invertebrate communities interact with nutrient inputs from upstream areas such as Upper Klamath Lake and anthropogenic influences from agricultural lands in the Klamath Basin. Conservation efforts have involved collaborations among the U.S. Fish and Wildlife Service, the Oregon Department of Fish and Wildlife, tribal co-managers like the Klamath Tribes, NGOs such as the Nature Conservancy, and academic partners at institutions including Oregon State University and the University of California, Davis. Monitoring programs tied to the National Oceanic and Atmospheric Administration and the Environmental Protection Agency track water quality parameters related to cyanobacterial blooms observed elsewhere in the basin.
Recreational use includes boating, angling, birdwatching, and shoreline camping, attracting visitors from Klamath Falls, Medford, Redding, and tourists en route to Crater Lake National Park. Local businesses, chambers such as the Klamath County Chamber of Commerce, and outfitters provide services for anglers targeting largemouth bass and rainbow trout, while wildlife tourism benefits from proximity to the Lower Klamath National Wildlife Refuge and migratory corridors to Yosemite National Park and Lassen Volcanic National Park visitors. Events and festivals in the region sometimes highlight outdoor recreation economies tied to the reservoir, coordinated with county governments and tourism boards in Oregon and neighboring California counties.
Water storage and flow regulation at the reservoir are integral to the regional Klamath Project irrigation network, hydropower generation units tied to utility operators, and municipal water supply systems serving Klamath Falls and surrounding communities. Infrastructure includes the dam structure, intake works, fish passage facilities where installed, and road access linked to state routes and county roads. Water rights administered under state law interact with federal allocations overseen by agencies such as the Bureau of Reclamation and the Federal Energy Regulatory Commission, with involvement from stakeholder groups like irrigation districts, tribal authorities, and conservation organizations. Engineering work draws on practices from agencies and firms with histories at sites like the Hoover Dam and projects coordinated through regional planning bodies and resource councils.
Environmental concerns include impacts on endangered suckers, altered flow regimes affecting downstream wetlands such as the Lower Klamath National Wildlife Refuge, harmful algal blooms similar to those documented in Upper Klamath Lake, and conflicts over water allocation during droughts influenced by El Niño–Southern Oscillation events. Litigation and negotiated settlements among the Klamath Tribes, state governments of Oregon and California, federal agencies, and NGOs have addressed dam operations, water leases, and habitat restoration. Conservation initiatives have proposed measures such as improved fish passage à la projects on the Elwha River and targeted restoration of riparian corridors resembling efforts in the Rogue River basin. Adaptive management strategies involve partnerships with research institutions including University of California, Berkeley and federal science programs to monitor ecological responses, while funding sources have included federal grants, state programs, and private philanthropy from foundations engaged in western water issues.
Category:Reservoirs in Oregon