Dam Name Owner Type Year Started Location State Capacity Website Recreation Description
Albeni Falls: Pend Oreille River, ID U.S. Army Corps of Engineers Federal 1955 Pend Oreille River Idaho 42.0 MW http://www.nws.usace.army.mil/PublicMenu/Menu.cfm?sitename=albeni&pagename=DamInformation Boat Launch Area, Boat Ramp, Camping Area, Picnic Area, Tailwater Fishing Facility The dam was built at the site of a natural falls called Albeni Falls, named after an early settler, Albeni Poirier. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.0004aeceb83bc26289c57&msa=0&ll=48.186404,-116.992378&spn=0.042117,0.087376 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Alcova: North Platte River, WY Bureau of Reclamation Federal 1935 North Platte River Wyoming 36 MW http://www.usbr.gov/projects/Facility.jsp?fac_Name=Alcova+Dam&groupName=Overview Boat Ramp, Camping Area, Fishing Pier, Hunting Area, Picnic Area, Trails, Wildlife Area Alcova Reservoir and its surrounding lands provide excellent water oriented recreational facilities and is the primary recreation area for Casper and the surrounding region. Sailboating and water skiing in summer and ice fishing in winter attract many visitors each year. Picnic areas, camp areas, and beach facilities are also popular. The Alcova Reservoir covers 2,470 surface acres, and attracts more than 185,000 people visit Alcova each year. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.0004aecec93bb93059592&msa=0&ll=42.548528,-106.720505&spn=0.186155,0.349503 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Alder: Nisqually River, WA Tacoma Power Municipal 1945 Nisqually River Washington 50.0 MW http://www.mytpu.org/tacomapower/ Boat Launch Area, Boat Ramp, Camping Area, Park, Picnic Area, Playground Area, Swimming Area, Tent, Trailer Sites
Tacoma Power began generating electricity from the water of the Nisqually River nearly 100 years ago. The original diversion dam, completed in 1912, was replaced in 1945 with Alder Dam and LaGrande Dam. The Nisqually River Project is Tacoma Power's second-largest hydroelectric resource, generating enough power to serve nearly 43,000 Northwest homes. When Alder Dam was completed in 1945, it was one of the tallest dams in the nation, measuring 330 feet high and 1,600 feet long. The powerhouse has two 25,000-kilowatt turbine generators that produce enough electricity to serve 16,000 Northwest homes each year. Alder Dam forms seven-mile-long Alder Lake. With 28 miles of shoreline and 3,065 acres of reservoir area at maximum elevation, Alder Lake is an inviting spot for boaters, water skiers, anglers and picnickers. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.00049894dde014616a8db&msa=0&ll=46.799589,-122.305641&spn=0.180967,0.31105&iwloc=0004aecb9b7095cde6721 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
American Falls: Snake River, ID Idaho Power IOU 1978 Snake River Idaho 92.4 MW Access Area, Boat Launch Area, Boat Ramp, Fishing Pier, Picnic Area
Amy Ranch: Deep Creek, ID A.J. Amy Independent 1987 Deep Creek Idaho 0.7 MW
Anderson Ranch: Boise River, ID Bureau of Reclamation Federal 1950 Boise River Idaho 40.0 MW http://www.usbr.gov/projects/Facility.jsp?fac_Name=Anderson+Ranch+Dam Anderson Ranch Dam and Powerplant is a multiple purpose structure that provides benefits of irrigation, power, and flood and silt control. The dam is 456 feet high and is on the South Fork of the Boise River, 28 miles northeast of Mountain Home. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.0004aeceb83bc26289c57&msa=0&ll=43.357138,-115.448456&spn=0.372442,0.846634 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Arrowrock: Boise River, ID Boise-Kuna Irrigation District Independent 2010 Boise River Idaho 15.0 MW
Ashton: Henrys Fork, ID PacifiCorp IOU 1917 Henrys Fork Idaho 6.8 MW Access Area, Boat Launch Area, Boat Ramp, Park, Picnic Area
Atlanta Power Station: Boise River, M Fork, ID Atlanta Power Co. Inc. IOU 1910 Boise River, M Fork Idaho 0.2 MW
Barber Dam: Boise River, ID Ada Co. and Fulcrum Inc. Independent 1990 Boise River Idaho 4.1 MW
Barney Creek: Barney Creek, MT T.K. and J.L. Budde Independent 1986 Barney Creek Montana 0.1 MW
Bell Mountain: Bell Mt. Creek & Mahogany Bell Mountain Power Independent 2009 Bell Mt. Creek & Mahogany Idaho 0.3 MW
Bend Power: Deschutes River PacifiCorp IOU 1913 Deschutes River Oregon 1.1 MW http://www.pacificorp.com/index.html
Big Cliff: N. Fork Santiam River, OR U.S. Army Corps of Engineers Federal 1954 N. Fk. Santiam River Oregon 18.0 MW http://www.nwp.usace.army.mil/locations/bigcliff.asp
The North Santiam canyon is rocky, narrow, and steep where Big Cliff Dam was constructed.  For that reason, Big Cliff is a concrete dam, rather than an earth and rockfill embankment structure, like most Corps dams in the Willamette Valley Project. Big Cliff's authorized primary purposes are flood risk management, power generation, water quality improvement, irrigation, fish and wildlife habitat and recreation. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.0004aecec8143204db04b&msa=0&ll=44.750695,-122.283154&spn=0.047545,0.06875 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Big Fork: Swan River, MT PacifiCorp IOU Swan River Montana 4.1 MW
Big Sheep Creek: Big Sheep Creek, WA G.M. Phillips Independent 1986 Washington 1.6 MW
Billingsley Creek: Billingsley Creek, ID Trout-Co. Inc. Independent 1986 Billingsley Creek CaliforniaIdaho 0.3 MW
Birch Creek B: Birch Creek, ID Independent 1984 Birch Creek Idaho 0.1 MW
Birch Creek: Birch Creek, ID Birch Power Co. and T.S. Sorenson Independent 1986 Birch Creek Idaho 2.6 MW
Black Canyon No. 3: N. Gooding Main Canal, ID W. and S. Brown Independent 1983 N. Gooding Main Canal Idaho 0.1 MW
Black Canyon: Payette River, ID Bureau of Reclamation Federal 1986 Payette River Idaho 10.2 MW http://www.usbr.gov/projects/Facility.jsp?fac_Name=Black+Canyon+Diversion+Dam Black Canyon Diversion Dam, on the Payette River near Emmett, Idaho, is a concrete gravity type dam with an ogee overflow spillway. The dam has a structural height of 183 feet and serves to divert water to the Payette Division through Black Canyon Canal. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.0004aeceb83bc26289c57&msa=0&ll=43.965639,-116.440659&spn=0.373628,0.550003 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Black Creek: Black Creek, WA Black Creek Hydro Inc. Independent 1994 Black Creek Washington 3.7 MW
Black Eagle: Missouri River, MT PPL Montana Independent 1927 Missouri River Montana 24.0 MW Interpretive Display, Overlook, Park, Picnic Area, Playground Area, Trails
Blind Canyon: Blind Canyon Spring, ID Blind Canyon Aquaranch Independent 1992 Blind Canyon Spring Idaho 1.3 MW
Bliss: Snake River, ID Idaho Power IOU 1949 Snake River Idaho 75.0 MW Access Area, Boat Launch Area, Boat Ramp, Park, Picnic Area
Boise River Diversion: Boise River, ID Bureau of Reclamation Federal 1912 Boise River Idaho 3.3 MW http://www.usbr.gov/projects/Facility.jsp?fac_Name=Boise+River+Diversion+Dam&groupName=General The Boise River Diversion Dam, on the Boise River about 7 miles southeast of Boise, Idaho, is a rubble-concrete, weir-type structure with a hydraulic height of 39 feet. The dam diverts water into the New York Canal which serves distribution laterals and feeds Lake Lowell. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.0004aeceb83bc26289c57&msa=0&ll=43.537474,-116.093302&spn=0.047723,0.09819 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Bonneville: Columbia River, OR/WA U.S. Army Corps of Engineers 1938 Columbia River OregonWashington 1227 MW http://www.nwp.usace.army.mil/Locations/ColumbiaGorge/Bonneville.aspx Picnic Area, Tailwater Fishing Facility, Visitor Center Bonneville Lock and Dam Project is located 145 river miles from the mouth of the Columbia River and about 40 miles east of Portland, Oregon, near Cascade Locks, Ore., and North Bonneville, Wash. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.0004aecec8143204db04b&msa=0&ll=45.643808,-121.942749&spn=0.090969,0.200844 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Boulder Creek: Boulder Creek, MT Salish and Kootenai Tribes Independent 1984 Boulder Creek Montana .4 MW
Boundary: Pend Oreille River, WA Seattle City Light Municipal 1967 Pend Oreille River Washington 1030.8 MW Access Area, Boat Launch Area, Boat Ramp, Camping Area, Interpretive Display, Overlook, Picnic Area, Swimming Area, Tent, Trailer Sites, Trails, Visitor Center, Wildlife Area
Box Canyon: Box Canyon Spring, ID Clear Springs Trout Co. Independent 1983 Box Canyon Spring Idaho 0.6 MW
Box Canyon: Mt. Shasta, CA Synergics Inc. Independent 1986 Mt. Shasta California 5.0
Box Canyon: Pend Oreille River, WA Pend Oreille PUD PUD 1956 Pend Oreille River Washington 77 MW http://www.popud.org/box-canyon-celebrates-completion-of-first-new-turbines Access Area, Boat Launch Area, Boat Ramp, Camping Area, Cottages, Cabins, Food Services, Hunting Area, Marina, Organizational, Groups, Overlook, Park, Picnic Area, Playground Area, Tent, Trailer Sites, Trails, Visitor Center The Box Canyon Hydroelectric Project, completed in 1956, is located on the scenic Pend Oreille River, ninety miles north of Spokane, Washington. Pend Oreille PUD was the first PUD in the nation to build a hydro-project. The Box Canyon Dam is a run-of-the-river project that was built near the exit of a narrow channel commonly referred as Box Canyon. The powerhouse has four Kaplan type turbines and Umbrella type generator. The project is designed with space for a fifth unit. The Pend Oreille River is one of the few major rivers in the U.S. that flow North. It contributes about one-third of the natural flows to the Columbia River system.< [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.00049894dde014616a8db&msa=0&ll=48.709994,-117.405396&spn=0.33348,0.699005 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Boysen: Wind River, WY Bureau of Reclamation Federal 1947 Wind River Wyoming 15 MW http://www.usbr.gov/projects/Facility.jsp?fac_Name=Boysen+Dam&groupName=General Boysen Dam is a zoned earthfill structure having a structural height of 220 feet. An overflow, weir-type spillway controlled by radial gates is located on the right abutment and surcharges immediately upstream and left of the powerplant. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.0004aecec93bb93059592&msa=0&ll=43.417019,-108.178253&spn=0.737159,1.246948 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Briggs Creek: Briggs Creek, ID R. Kaster Independent 1985 Briggs Creek Idaho 0.8 MW
Briggs: Teton Canal, ID Briggs Hydroelectric Independent 1986 Teton Canal Idaho 0.3 MW
Broadwater (aka Toston): Missouri River, MT State of Montana; Dry Creek LLC Independent 1989 Missouri River Montana 9.7 MW
Brownlee: Snake River, ID/OR Idaho Power IOU 1958 Snake River IdahoOregon 585.4 MW
Buffalo River: Buffalo River, ID Fall River REA Coop 1936 Buffalo River Idaho 0.3 MW
Bull Run: Bull Run River, OR City of Portland Independent 1982 Bull Run River Oregon 23.7 MW http://www.portlandonline.com/
Bull Run: Bull Run River, OR City of Portland Independent 1982 Bull Run River Oregon 11.8 MW http://www.portlandonline.com/
Bull Run: Sandy River, OR Portland General Electric IOU 1912 Sandy River Oregon 20.8 MW http://www.portlandgeneral.com/default.aspx Access Area, Boat Launch Area, Boat Ramp, Food Services, Park, Picnic Area, Playground Area, Swimming Area
Burton Creek: Burton Creek, WA G. Peters Independent 1996 Washington .8 MW
Bypass: N. Side Main Canal, ID ENEL Spa Independent 1987 N. Side Main Canal Idaho 9.9 MW
Canal Creek: Wallowa Valley Imp. Dist. Canal, OR Joseph Hydro Assoc. Independent 1984 Wallowa Valley Imp. Dist. Cnl. Oregon 1.1 MW
Canyon Creek: Canyon Creek, OR Douglas Power Water Company Independent 1985 Canyon Creek Oregon 0.1 MW
Canyon Ferry: Missouri River, MT Bureau of Reclamation Federal 1953 Missouri River Montana 49.8 MW http://www.usbr.gov/projects/Facility.jsp?fac_Name=Canyon+Ferry+Dam Canyon Ferry Dam and Powerplant are on the Missouri River about 1.5 miles downstream from the original Canyon Ferry Dam and the Montana Power Company's 6,700 kilowatt in the backwater Hauser Lake. The dam is a concrete gravity structure approximately 1,000 feet in length along the crest with a structural height of 225 feet. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.0004aecec388a1d4bca6c&msa=0&ll=46.648729,-111.727524&spn=0.181474,0.31105&iwloc=0004aed0ea1e42d2f3a5a width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Carmen-Smith: McKenzie River, OR Eugene Water and Electric Board Municipal 1963 McKenzie River Oregon 114.3 MW http://www.eweb.org/ Access Area, Boat Launch Area, Boat Ramp, Camping Area, Picnic Area, Tailwater Fishing Facility, Tent, Trailer Sites

The Carmen-Smith Hydroelectric Project, located 71 miles east of Eugene on the upper McKenzie River, is EWEB's largest utility-owned power source.

The project is operated as a peaking and load-following facility, using the water stored in the three project reservoirs. Power generation is increased during the times of the day when customers' use of electricity is the greatest—in the winter that is typically early morning and early evening hours. In addition to peaking, the project provides on-demand power to support EWEB's alternative energy resources including wind power. The Carmen Diversion Reservoir, filled by the McKenzie River flowing from its headwaters at Clear Lake, has minimal storage capacity and is used to divert water into a tunnel leading to Smith Reservoir. From Smith Reservoir, water is routed through a second tunnel to the Carmen Power Plant, which discharges into Trail Bridge Reservoir, and then flows through the Trail Bridge Power Plant and back into the McKenzie River below Trail Bridge Dam. The Carmen Power Plant operates in a peaking mode, while the Trail Bridge Development operates as a re-regulating facility. The overall operational mode of the project is such that, on an average daily basis, inflow to the project nearly matches outflow at the Trail Bridge Power Plant tailrace. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.0004aecec8143204db04b&msa=0&ll=44.339811,-122.001801&spn=0.094536,0.155525 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Cascade Creek: Cascade Creek, MT M. Ranch Independent 1983 Cascade Creek Montana 0.1 MW
Cascade: Payette River N. Fork, ID Idaho Power IOU 1926 Payette River N. Fork Idaho 12.4 MW Access Area
Cedar Draw Creek: Cedar Draw Creek, ID LP Independent 1988 Cedar Draw Creek Idaho 2.3 MW
Cedar Falls: Cedar Falls, WA Seattle City Light Municipal 1905 Cedar River Washington 20 MW Boat Launch Area, Interpretive Display, Visitor Center
Central Oregon Siphon: Deschutes River, OR Central Oregon Irrigation District Independent 1989 Deschutes River Oregon 5.4 MW
Chandler: Yakima River, WA Bureau of Reclamation Federal 1927 Yakima River Washington 12.0 MW http://www.usbr.gov/projects/Powerplant.jsp?fac_Name=Chandler+Powerplant The Chandler Powerplant includes two 6.0 megawatt, 4160 volt hydropower generators, and two 2,600 horsepower pumps which operate from a 10.6 mile canal, diverting up to 1,500 cubic feet per second of water from the Prosser Diversion Dam. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.00049894dde014616a8db&msa=0&ll=46.212625,-119.772263&spn=0.185308,0.275002 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Chester Diversion: Henrys Fork, ID Fall River REA Coop 2011 Henrys Fork Idaho 3.3 MW Access Area, Boat Launch Area, Boat Ramp, Camping Area, Food Services, Interpretive Display, Marina, Park, Picnic Area, Tent, Trailer Sites, Wildlife Area
Chief Joseph: Columbia River, WA U.S. Army Corps of Engineers Federal 1955 Columbia River Washington 2620 MW http://www.nws.usace.army.mil/Missions/CivilWorks/LocksandDams/ChiefJosephDam.aspx Boat Launch Area, Boat Ramp, Camping Area, Picnic Area, Tailwater Fishing Facility, Visitor Center Chief Joseph Dam is the second largest hydropower producing dam in the United States. It is the largest hydropower producing dam operated by the US Army Corps of Engineers. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.00049894dde014616a8db&msa=0&ll=47.997504,-119.634247&spn=0.167939,0.401688 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
City of Albany: Santiam Albany Canal, OR City of Albany Municipal 2009 Santiam - Albany Canal Oregon .5 MW http://www.cityofalbany.net/
CJ Strike: Snake River, ID Idaho Power IOU 1952 Snake River Idaho 82.8 MW
Clear Lake: Snake River, ID Idaho Power IOU 1937 Snake River Idaho 2.5 MW
Clearwater 1: Clearwater River, OR PacifiCorp IOU 1953 Clearwater River Oregon 15 MW http://www.pacificorp.com/index.html
Clearwater 2: Clearwater River, OR PacifiCorp IOU 1953 Clearwater R. Oregon 26.0 MW http://www.pacificorp.com/index.html
Clearwater: N. Fk. Clearwater River, ID ID Dept. of Water Recources Independent 2000 N. Fk. Clearwater River Idaho 2.9 MW
Cline Falls: Deschutes River, OR PacifiCorp IOU 1943 Deschutes R. Oregon 1.0 MW http://www.pacificorp.com/index.html
Cochrane: Missouri River, MT PPL Montana Independent 1958 Missouri River Montana 48.0 MW Access Area, Trails
COPCO 1: Klamath River, CA PacifiCorp IOU 1918 Klamath River California 20.0 MW
COPCO 2: Klamath River, CA PacifiCorp IOU 1925 Klamath River CaliforniaIdaho 27.0 MW
Cougar: McKenzie River, OR U.S. Army Corps of Engineers Federal 1964 McKenzie R. Oregon 26.0 MW http://www.nwp.usace.army.mil/locations/cougar.asp

Cougar Dam and Reservoir is located at River Mile 4.4 of the South Fork McKenzie River, about 42 miles east of Eugene, Ore.

[cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.0004aecec8143204db04b&msa=0&ll=44.128507,-122.2435&spn=0.174226,0.401688 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Cowiche Hydroelectric Project: Tieton River, WA Yakima-Tieton Irrigation Dist Independent 1987 Tieton River Washington 1.7 MW http://www.wswra.org/irrigation_district_members.html
Cowlitz Falls: Cowlitz River, WA Lewis Co. PUD PUD 1994 Cowlitz River Washington 70 MW http://www.lcpud.org/
Cushman 1: Skokomish River North Fork, WA Tacoma Power Municipal 1926 Skokomish River North Fork Washington 43.2 MW http://www.mytpu.org/ Boat Launch Area, Boat Ramp, Camping Area, Cottages, Cabins, Fishing Pier, Food Services, Marina, Organizational, Groups, Overlook, Park, Picnic Area, Playground Area, Tent, Trailer Sites, Trails, Wildlife Area
One of the first major dams in the Pacific Northwest was Tacoma Power's Cushman Dam No. 1, dedicated in 1926, when President Calvin Coolidge pressed a button in the White House to energize the project. The dam is on the North Fork of the Skokomish River near Hood Canal. It is 275 feet high and 1,111 feet long. Lake Cushman has a 23-mile shoreline. Electricity moves from the Cushman Hydro Project to Tacoma on a 40-mile-long transmission line. Construction of the Tacoma Narrows transmission line crossing was a notable engineering achievement of the time. Stretching more than a mile and a quarter between towers in Tacoma and Gig Harbor, the power lines were the longest single span in the world. On Jan. 12, 2009, Tacoma Power, the Skokomish Tribe and state and federal agencies signed a settlement agreement that resolves a $5.8 billion damages claim and long-standing disputes over the terms of a long-term license for Cushman Hydroelectric Project. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.00049894dde014616a8db&msa=0&ll=47.423674,-123.21888&spn=0.169798,0.401688 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Cushman 2: Skokomish River North Fork, WA Tacoma Power Municipal 1930 Skokomish River North Fork Washington 81 MW http://www.mytpu.org/ Boat Launch Area, Boat Ramp, Camping Area, Cottages, Cabins, Food Services, Overlook, Park, Picnic Area, Playground Area, Tent, Trailer Sites, Visitor Center
Just downstream of Cushman Dam No. 1 is Cushman Dam No. 2. Completed in 1930, and forming the small 150-acre Kokanee Lake, this dam measures 235 feet above bedrock and is 575 feet in length. The powerhouse for Cushman No.2 sits several miles below the dam, overlooking scenic Hood Canal along U.S. Highway 101; the powerhouse attracts hundreds of visitors every year. Electricity moves from the Cushman Hydro Project to Tacoma on a 40-mile-long transmission line. Construction of the Tacoma Narrows transmission line crossing was a notable engineering achievement of the time. Stretching more than a mile and a quarter between towers in Tacoma and Gig Harbor, the power lines were the longest single span in the world. On Jan. 12, 2009, Tacoma Power, the Skokomish Tribe and state and federal agencies signed a settlement agreement that resolves a $5.8 billion damages claim and long-standing disputes over the terms of a long-term license for Cushman Hydroelectric Project. fish passage system. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.00049894dde014616a8db&msa=0&ll=47.369989,-123.159142&spn=0.084986,0.200844 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Cutler: Bear River, UT PacifiCorp IOU 1924 Bear River Utah 30 MW
Deep Creek: Deep Creek, WA G. Foster Independent 1983 Deep Creek Washington .7 MW
Deer Creek: Deer Creek, UT Bureau of Reclamation Independent 1981 Deer Creek Utah 0.3 MW http://www.usbr.gov/projects/Facility.jsp?fac_Name=Deer+Creek+Dam Deer Creek Dam is located on the Provo River about 16 miles northeast of Provo, Utah. It is a zoned earthfill structure 235 feet high with a crest length of 1,304 feet. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.0004aececd62c07fc8772&msa=0&ll=40.399902,-111.514664&spn=0.102098,0.148144 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Denny Creek: Denny Creek, OR C.A. and D.E. Curtiss Independent 1985 Denny Cr. Oregon 0.1 MW
Detroit: N. Fork Santiam River, OR U.S. Army Corps of Engineers Federal 1953 N. Fk. Santiam R. Oregon 100 MW http://www.nwp.usace.army.mil/locations/detroit.asp Detroit Dam is located at river mile 49 on the North Santiam River, about 45 miles southeast of Salem, Ore. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.0004aecec8143204db04b&msa=0&ll=44.720881,-122.250624&spn=0.047325,0.065832 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Dexter: M. Fork Willamette River, OR U.S. Army Corps of Engineers Federal 1955 M. Fk. Willamette River Oregon 15.0 MW http://www.nwp.usace.army.mil/locations/dexter.asp Dexter Dam is located at river mile 18 on the Middle Fork of the Willamette River, about 22 miles southeast of Eugene, Ore. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.0004aecec8143204db04b&msa=0&ll=43.921513,-122.814531&spn=0.046738,0.06875 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Diablo: Skagit River, WA Seattle City Light IOU 1936 Skagit River Washington 152.8 MW Boat Launch Area, Boat Ramp, Camping Area, Fishing Pier, Hunting Area, Interpretive Display, Overlook, Picnic Area, Swimming Area, Tent, Trailer Sites, Trails, Visitor Center, Wildlife Area
Dietrich Drop: Milner-Gooding Canal, ID BP Hydro Assoc. Independent 1990 Milner-Gooding Canal Idaho 4.8 MW
Doug Hull: Twin Falls Canal Lateral 28, ID D. Hull Independent 1983 Twin Falls Canal Lateral 28 Idaho 0.3 MW
Dry Creek: Dry Creek, ID Independent 1987 Dry Creek Idaho 3.6 Boat Launch Area, Camping Area, Hunting Area, Picnic Area, Visitor Center
Dworshak: Clearwater River, ID U.S. Army Corps of Engineers Federal 1973 Clearwater River Idaho 400.0 MW http://www.nww.usace.army.mil/html/pub/pertdata/dwapert.htm Dworshak Dam is a hydroelectric, concrete gravity dam in Clearwater County, Idaho, United States on the North Fork Clearwater River. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.0004aeceb83bc26289c57&msa=0&ll=46.513516,-116.299553&spn=0.172712,0.401688 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Eagle Point: Little Butte Creek, OR PacifiCorp IOU 1957 Little Butte Creek Oregon 2.8 MW http://www.pacificorp.com/index.html
East Fork Ditch: E. Fk. Weisser River, ID BS Incorporated Independent 1994 E. Fk. Weisser River Idaho 2.5 MW
East Side: Klamath River, OR PacifiCorp IOU 1924 Klamath R. Oregon 3.2 MW http://www.pacificorp.com/index.html
Ebey Hill: Tribe to North Fork Stillaguamish, WA K and P Duncan Independent 1992 Tribe to North Fork Stillaguamish Washington 0.1 MW
Electron: Puyallup River, WA Puget Sound Energy IOU 1904 Puyallup River Washington 22.8 MW http://www.pse.com/Pages/default.aspx
Elk Creek: Elk Creek, ID ENEL Spa Independent 1986 Elk Creek Idaho 2.6 MW
Eltopia Branch Canal 4.6: Eltopia Branch Canal, WA Columbia Basin Irr. District Independent 1983 Eltopia Branch Canal Washington 2.2 MW http://www.columbiairrigation.com/
Elwha: Elwha River, WA U.S. Department of the Interior Independent 1913 Elwha Dam Washington 12.6 MW http://www.doi.gov/index.cfm
Fall Creek: Klamath River, CA PacifiCorp IOU 1903 Klamath River CaliforniaIdaho 2.1
Falls Creek: Falls Creek, OR Frontier Technology Inc. Independent 1984 Falls Creek Oregon 4.1 MW
Falls Creek: Falls Creek, WA A. H. Haley Independent 1995 Falls Creek Washington 0 MW
Falls River: Fall River, ID Marysville Hydro Partners Independent 1993 Fall River Idaho 9.1 MW
Faraday: Clackamas River, OR Portland General Electric IOU 1907 Clackamas R. Oregon 36.6 MW http://www.portlandgeneral.com/default.aspx
Farmers Irr. Dist. No. 2: Farmers Ditch, OR Famers Irr. Dist. Independent 1986 Farmers Ditch Oregon 3.0 MW
Farmers Irr. Dist. No.3: Low Line Ditch, OR Famers Irr. Dist. Independent 1987 Low Line Ditch Oregon 1.8 MW
Faulkner: N. Side Main “Y” Canal, ID Faulkner Land and Livestock Co. Independent 1987 N. Side Main "Y" Canal Idaho 0.9 MW
Ferguson Ridge: Wallowa Valley Imp. Dist. Canal, OR Joseph Hydro Assoc. Independent 1984 Wallowa Valley Imp. Dist. Canal. Oregon 1.9 MW
Fish Creek: Fish Creek, OR PacifiCorp IOU 1952 Fish Creek Oregon 11.0 MW http://www.pacificorp.com/index.html
Fisheries Development No. 1: Billingsley Circle, ID Fisheries Development Co. Independent 1990 Billingsley Circle Idaho 0.3 MW
Fontenelle: Green River, WY Bureau of Reclamation Federal 1961 Green River Wyoming 10 MW http://www.usbr.gov/projects/Facility.jsp?fac_Name=Fontenelle%20Dam
The Fontenelle Dam is located on the Green River 24 miles southeast of La Barge, Wyoming. A zoned earthfill structure, the dam is 139 feet high with a crest length of 5,421 feet, and a volume of 5,265,000 cubic yards of material. The spillway consists of an uncontrolled crest, open chute, and stilling basin with a design capacity of 20,200 cubic feet per second. Fontenelle Powerplant is located adjacent to the toe of the dam, with the power penstock branching from the river outlet works. The powerplant consists of one 10,000-kilowatt generator and one 16,000-horsepower hydraulic turbine. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.0004aecec93bb93059592&msa=0&ll=42.027874,-110.059662&spn=0.375399,0.699005 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Forgy: Unnames Spring, ID 1995 Unnamed Spring Idaho 0.1 MW
Fort Peck: Missouri River, MT U.S. Army Corps of Engineers Federal 1943 Missouri River Montana 185.3 MW http://www.nwo.usace.army.mil/lake_proj/fortpeck/index.html Named for an old trading post of the 1860's, Fort Peck Dam is one of six multipurpose main stem projects which operate as part of a system on the upper Missouri River. Construction of Fort Peck Dam near Glasgow, Montana, began in 1933 and was completed in 1940. Fort Peck Dam is the largest hydraulically filled dam in the United States. The dam measures 21,026 feet in length with a maximum height of 250.5 feet. The total combined capacity of the five turbines generates 185,250 kilowatts of power. The entire Fort Peck project lies within the Charles M. Russell National Wildlife Refuge. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.0004aecec388a1d4bca6c&msa=0&ll=48.012894,-106.410828&spn=0.335777,0.803375 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Foster: S. Fork Santiam River, OR U.S. Army Corps of Engineers Federal 1968 S. Fk. Santiam River Oregon 20.0 MW http://www.nwp.usace.army.mil/locations/foster.asp
Foster Dam is a rock-fill structure with a concrete gated spillway, and was completed with Green Peter Dam in1968 at a cost of $82.3 million. In coordination with Green Peter, the two dams work together for the purposes of flood risk management, hydropower, water quality improvement, irrigation, fish and wildlife habitat and recreation. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.0004aecec8143204db04b&msa=0&ll=44.415881,-122.670593&spn=0.180488,0.349503 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Fremont Canyon: North Platte River, WY Bureau of Reclamation Federal 1960 North Platte River Wyoming 67 MW http://www.usbr.gov/projects/Powerplant.jsp?fac_Name=Fremont+Canyon+Powerplant The Fremont Canyon Powerplant consists of two hydraulic turbine-driven generators, with a combined capacity of 66,800 kilowatts. Water for power generation is conveyed to the powerplant by a 3-mile-long 18-foot-diameter, concrete-lined pressure tunnel. The tunnel branches to two 10.75-foot-diameter penstocks upstream of the powerplant. This conduit is controlled by a 14- by 18-foot fixed-wheel gate located 243 feet downstream from the inlet. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.0004aecec93bb93059592&msa=0&ll=42.468045,-106.853886&spn=0.094464,0.211658 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Gem State: Snake River, ID City Of Idaho Falls Municipal 1988 Snake River Idaho 23.4 MW
Geo-Bon No. 2: Little Wood River, ID G. Arkoosh Independent 1986 Little Wood River Idaho 1.1 MW
Georgetown: Georgetown Creek, ID Georgetown Irr. Co. 1985 Georgetown Creek Idaho 0.5 MW
Glendo: North Platte River, WY Bureau of Reclamation Federal 1958 North Platte River Wyoming 38 MW http://www.usbr.gov/projects/Facility.jsp?fac_Name=Glendo+Dam&groupName=Overview Glendo Dam is located on the North Platte River in Wyoming. The earthfill dam is 2,096 feet long and 190 feet high, containing two hydroelectric turbines. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.0004aecec93bb93059592&msa=0&ll=42.501845,-105.009041&spn=0.093526,0.155869 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Glines Canyon: Elwha River, WA U.S. Department of the Interior Independent 1927 Elwha River Washington 16.3 MW http://www.doi.gov/index.cfm Boat Launch Area, Boat Ramp, Overlook, Picnic Area
Gold Ray 1-2: Rogue River, OR Jackson County Municipal 1907 Rogue River Oregon 1.5 MW
Goodrich: Goodrich Creek, OR Independent Goodrich Creek Oregon 0.1 MW
Gorge: Skagit River, WA Seattle City Light Municipal 1924 Skagit River Washington 207.3 MW Boat Launch Area, Boat Ramp, Camping Area, Food Services, Hunting Area, Interpretive Display, Overlook, Park, Picnic Area, Playground Area, Tent, Trailer Sites, Trails, Visitor Center, Whitewater Boating, Wildlife Area
Goshen North: Idaho Falls, ID Ridgeline Energy/BP Wind Energy Independent 2010 Idaho Falls Idaho 124.5 MW
Grace: Bear River, ID PacifiCorp IOU 1914 Bear River Idaho 33.0 MW Access Area
Grand Coulee: Columbia River, WA Bureau of Reclamation Federal 1941 Columbia River Washington 6,809 MW http://www.usbr.gov/pn/grandcoulee/ Grand Coulee Dam is owned and operated by the Bureau of Reclamation in Grand Coulee, WA. As the largest producer of hydropower in the United States, Grand Coulee Dam produces an average of 21,000,000,000 kWh of power each year. There are four powerhouses with a total of 33 generating units which supply power to 11 western states. Construction of the dam began in 1933 and was completed in 1941. The dam was key to the development of the Columbia Basin Project. Today, Grand Coulee Dam provides irrigation water to over 600,000 acres in the Columbia Basin. Flood control for the Columbia River is also a major function of the dam. In addition, Franklin D. Roosevelt Lake, which is the 151 mile reservoir created by Grand Coulee Dam, provides 9.5 million acre-feet of water storage for the Columbia River in the United States and provides recreation to over 1 million visitors per year. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.00049894dde014616a8db&msa=0&ll=47.959238,-118.983393&spn=0.042303,0.087376 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Green Peter: M. Fork Santiam River, OR U.S. Army Corps of Engineers Federal 1967 Santiam River Oregon 80.0 MW http://www.nwp.usace.army.mil/locations/greenpeter.asp
Green Peter Dam is a concrete structure with a gated spillway that was completed with Foster Dam in 1968 at a cost of $82.3 million. In coordination with Foster, the two dams work together for the purposes of flood risk management, hydropower, water quality improvement, irrigation, fish and wildlife habitat and recreation. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.0004aecec8143204db04b&msa=0&ll=44.449958,-122.547684&spn=0.360765,0.699005 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Guernsey: North Platte River, WY Bureau of Reclamation Federal 1927 North Platte River Wyoming 5 MW http://www.usbr.gov/projects/Facility.jsp?fac_Name=Guernsey%20Dam Guernsey Dam is an earthfill dam. The dam creates Guernsey Reservoir, the last of the 5 major reservoirs on the North Platte River in Wyoming. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.0004aecec93bb93059592&msa=0&ll=42.297183,-104.773736&spn=0.02422,0.038967 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Hailey: Indian Circle, ID City of Hailey Independent 1985 Indian Circle Idaho 0.1 MW
Hauser: Missouri River, MT PPL Montana Independent 1911 Missouri River Montana 17.0 MW Access Area, Boat Launch Area, Boat Ramp, Camping Area, Fishing Pier, Food Services, Hunting Area, Interpretive Display, Marina, Picnic Area, Playground Area, Swimming Area, Tent, Trailer Sites, Trails, Wildlife Area, Winter Sports
Hay Canyon: Wasco, OR Iberdrola Renewables Independent 2008 Wasco Oregon 100.8 MW
Hazelton A: N. Side Main Canal, ID ENEL Spa Independent 1990 N. Side Main Canal Idaho 8.7 MW
Hazelton B: N. Side Main Canal, ID N. Side Canal Co. Independent 1993 N. Side Main Canal Idaho 7.6 MW
Heart Mountain: Shoshone River, WY Bureau of Reclamation Federal 1947 Shoshone River Wyoming 5 MW http://www.usbr.gov/projects/Powerplant.jsp?fac_Name=Heart+Mountain+Powerplant The Heart Mountain Powerplant is at the outlet of Shoshone Canyon Conduit about 4 miles southwest of Cody, Wyoming. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.0004aecec93bb93059592&msa=0&ll=44.501648,-109.184189&spn=0.186834,0.311737 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Hell’s Canyon 1-3: Snake River, ID/OR Idaho Power IOU 1967 Snake River IdahoOregon 391.5 MW
Hills Creek: M. Fork Willamette River, OR U.S. Army Corps of Engineers Federal 1962 M. Fk. Willamette River Oregon 30.0 MW http://www.nwp.usace.army.mil/locations/hillscreek.asp
Hills Creek Dam is an earthfill structure with a gated concrete spillway and outlet works for regulating lake levels. The dam was completed in 1961 at a cost of $46 million. In coordination with Lookout Point and Fall Creek dams, the three dams work together for the purposes of flood risk management, water quality improvement, irrigation, fish and wildlife habitat and recreation. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.0004aecec8143204db04b&msa=0&ll=43.711068,-122.425117&spn=0.18265,0.349503 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
HM Jackson: Sultan River, WA Snohomish Co. PUD PUD 1984 Sultan River Washington 111.8 http://www.snopud.com/ Access Area, Boat Launch Area, Boat Ramp, Hunting Area, Wildlife Area
Holter: Missouri River, MT PPL Montana Independent 1918 Missouri River Montana 38.4 MW Boat Launch Area, Boat Ramp, Camping Area, Hunting Area, Interpretive Display, Marina, Organizational, Groups, Overlook, Picnic Area, Swimming Area, Tent, Trailer Sites, Trails, Visitor Center, Wildlife Area
Hood Street: McMillen Reservoir, WA Tacoma Power Municipal 1990 McMillan Reservoir Washington .9 MW http://www.mytpu.org/
Horseshoe: Payette River, ID Innergex Power Independent 1995 Payette River Idaho 9.4 MW
Hungry Horse: Flathead River, MT Bureau of Reclamation Federal 1952 Flathead River Montana 428.0 MW http://www.usbr.gov/projects/Facility.jsp?fac_Name=Hungry+Horse+Dam Hungry Horse Dam is 564-feet-high and has a variable-thickness concrete arch structure with a crest length of 2,115 ft. The spillway is the highest morning-glory structure in the world. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.0004aecec388a1d4bca6c&msa=0&ll=48.332061,-114.025726&spn=0.167989,0.349503 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Ice Harbor: Snake River, WA U.S. Army Corps of Engineers Federal 1962 Snake River Washington 603.0 MW http://www.nww.usace.army.mil/html/pub/pertdata/ihpert.htm Boat Launch Area, Boat Ramp, Picnic Area, Swimming Area, Visitor Center The project consists of Ice Harbor Dam, powerhouse, navigation lock, two fish ladders, and facilities. The project provides navigation, hydroelectric generation, recreation, and incidental irrigation. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.00049894dde014616a8db&msa=0&ll=46.252998,-118.893013&spn=0.174726,0.349503 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Idaho Fall Upper Plant 4: Snake River, ID City Of Idaho Falls Municipal 1982 Snake River Idaho 8.0 MW
Idaho Falls City Plant 3: Snake River, ID City Of Idaho Falls Municipal 1982 Snake River Idaho 8.0 MW
Idaho Falls: Snake River, ID Idaho Falls Power Municipal 1982 Snake River Idaho 8.0 MW Access Area, Boat Launch Area, Boat Ramp, Camping Area, Canoe Portages, Fishing Pier, Park, Picnic Area, Swimming Area, Tailwater Fishing Facility, Tent, Trailer Sites, Trails, Whitewater Boating, Winter Sports [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.0004aeceb83bc26289c57&msa=0&ll=43.468245,-112.062263&spn=0.048588,0.06875 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Idaho Falls: Snake River, ID City Of Idaho Falls Municipal 1940 Snake River Idaho 3.0 MW
Iron Gate: Klamath River, CA PacifiCorp IOU 1962 Klamath River CaliforniaIdaho 18.0 MW
Island Park: Henrys Fork, ID Fall River REA Coop 1994 Henrys Fork Idaho 4.8 MW
Jim Boyd: Umatilla, OR D. Logan Independent Umatilla River Oregon 1.2 MW
Jim Ford Creek: Jim Ford Creek, ID Ford Hydro Partnership Independent 1988 Jim Ford Creek Idaho 1.5 MW
John Boyle: Klamath River, OR PacifiCorp IOU 1958 Klamath River Oregon 98.7 MW
John Day: Columbia River, OR/WA U.S. Army Corps of Engineers Federal 1968 Columbia River OregonWashington 2200 MW http://www.nwp.usace.army.mil/locations/johnday.asp Boat Launch Area, Boat Ramp, Camping Area, Picnic Area, Tailwater Fishing Facility, Visitor Center Construction of John Day Lock and Dam was completed in 1971. The authorized primary project purposes are navigation and power generation. The project consists of a navigation lock, spillway, powerhouse and fish passage facilities. Various recreational facilities are provided along Lake Umatilla and the John Day River. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.0004aecec8143204db04b&msa=0&ll=45.717207,-120.693054&spn=0.36915,0.622101&iwloc=0004aedfc316be5a73064 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
John Day: John Day Creek, ID Independent 1987 John Day Creek Idaho 1.1 MW
Juniper Ridge Piping and Hydro: Pilot Butte Canal, OR Central Oregon Irrigation District Independent 2010 Pilot Butte Canal Oregon 3.3 MW
Kasel-Witherspoon: Snake River, ID K-W Co. Independent 1983 Snake River Idaho 1.4 MW
Kaster Riverview: Box Canyon Spring, ID R. Kaster Independent 1983 Box Canyon Spring Idaho 0.4 MW
Kerr: Flathead River, MT PPL Montana Independent 1938 Flathead River Montana 211.5 MW Access Area, Boat Launch Area, Boat Ramp, Camping Area, Cottages, Cabins, Fishing Pier, Food Services, Golf Course, Hunting Area, Interpretive Display, Marina, Organizational, Groups, Overlook, Park, Picnic Area, Playground Area, Swimming Area, Tent, Trailer Sites, Whitewater Boating, Wildlife Area
Keswick: Sacramento River, CA Bureau of Reclamation Federal 1950 Sacramento River California 75 MW http://www.usbr.gov/projects/Facility.jsp?fac_Name=Keswick%20Dam Keswick Dam is a concrete gravity dam on the Sacramento River about 2 miles northwest of Redding, CA. Part of the Bureau of Reclamation's Central Valley Project, the dam is 157 feet high and impounds the Keswick Reservoir. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.0004aececaaced57f56c2&msa=0&ll=40.611867,-122.445717&spn=0.098387,0.195522 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Koma Kulshan: Rocky Creek, WA Koma Kulshan Assoc. Independent 1990 Rocky Creek Washington 12 MW http://www.energyjustice.net/map/displayfacility-68097.htm
Kortes: North Platte River, WY Bureau of Reclamation Federal 1951 North Platte River Wyoming 36 MW http://www.usbr.gov/projects/Facility.jsp?fac_Name=Kortes%20Dam Kortes dam is located about 54 miles southwest of Casper in Black Canyon. The plant has three 18,500-horsepower Francis-type turbines and three 12,000-kilowatt generators with a combined capacity of 36,000 kilowatts. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.0004aecec93bb93059592&msa=0&ll=42.173836,-106.878862&spn=0.02414,0.037379 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Koyle Ranch: Big Wood River, ID J.H. Koyle Independent 1983 Big Wood River Idaho 1.3 MW
Lacomb: Lacomb Irr. Canal, OR Lacomb Irr. Dist. Independent 1986 Lacomb Irr. Canal Oregon 1.0 MW
LaGrande: Nisqually River, WA Tacoma Power Municipal 1912 Nisqually River Washington 65.0 MW http://www.mytpu.org/
The LaGrande Dam is part of the Nisqually Hydroelectric Project on the Nisqually River. LaGrande Dam is downstream from Alder Dam and is located 36 miles southeast of Tacoma, Washington. The present structure was completed in 1945. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.00049894dde014616a8db&msa=0&ll=46.834009,-122.322035&spn=0.043216,0.087376 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Lake Chelan: Chelan River, WA Chelan Co. PUD PUD 1927 Chelan River Washington 48 MW http://www.chelanpud.org/ Access Area, Boat Launch Area, Boat Ramp, Camping Area, Cottages, Cabins, Fishing Pier, Food Services, Hunting Area, Marina, Overlook, Park, Picnic Area, Playground Area, Swimming Area, Tailwater Fishing Facility, Tent, Trailer Sites, Trails, Visitor Center, Winter Sports The Lake Chelan Hydroelectric Project is located adjacent to the city of Chelan in Chelan County, Washington. The project is near the geographic center of the state. The dam is located at the southeasterly end of Lake Chelan. The powerhouse is located near the community of Chelan Falls. Construction of the dam and the powerhouse began in 1926; both of the project's generating units were operational in 1928. The dam and powerhouse are linked by a 2.2 mile long underground power tunnel. The steel and concrete tunnel has a total vertical drop of nearly 400 feet. From the dam on Lake Chelan, water travels through the power tunnel to the powerhouse and drives two Francis turbines. Water is then discharged through the tailrace into the Columbia River. Lake Chelan, the project reservoir, is 55-miles long. The pristine, clear lake offers numerous recreation opportunities. Chelan County PUD has constructed several parks along the reservoir shoreline for public use. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.00049894dde014616a8db&msa=0&ll=47.804738,-119.984436&spn=0.084283,0.200844 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Lake Creek A: Lake Creek, MT Northern Lights Coop Coop 1917 Lake Creek IdahoMontana 1.0 MW
Lake Creek B: Lake Creek, MT Northern Lights Coop Coop 1949 Lake Creek Montana 3.5 MW
Lake Creek No.1: Lake Creek, OR Mountain Energy Co. Independent 1984 Lake Creek Oregon o.1 MW
Lake Oswego: Oswego Creek, OR Lake Oswego Corp. Independent 1910 Oswego Creek Oregon 0.5 MW
Last Chance Canal: Bear River, ID Last Chance Canal Co. Independent 1984 Bear River Idaho 1.7
Lateral No. 10: Lateral No. 10 Canal Cogeneration Inc. Independent 1984 Lataeral No. 10 Canal Idaho 2.9 MW
Leaburg-Walterville: McKenzie River, OR Eugene Water and Electric Board Municipal 1930 McKenzie River Oregon Leaburg 16.7 MW, Walterville 8 MW http://www.eweb.org/ Boat Launch Area, Boat Ramp, Park, Trails
The Leaburg-Walterville Hydroelectric Project is comprised of two facilities located at different points on the McKenzie River. Both plants are run-of-the-river facilities, meaning that the natural flow and elevation drop of the river are used to generate electricity. The Leaburg facility has a capacity of 16.7 megawatts. The Walterville plant has a capacity of 8 megawatts. The project is operated as an integrated system. The intake gates are operated to capture up to the maximum water right (2,577 cubic feet per second) from available river flow, provided that licensed minimum flows are left in the river downstream of the intake. Canal and downstream river elevations are monitored electronically with alarms and remote monitoring capabilities at the Walterville powerhouse. The turbine-generator automatically adjusts load for available flows to maintain a constant level. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.0004aecec8143204db04b&msa=0&ll=44.099914,-122.766037&spn=0.183926,0.423317 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Lemolo 2: N. Umpqua River, OR PacifiCorp IOU 1956 Umpqua River Oregon 33.0 MW
Lemolo: N. Umpqua River, OR PacifiCorp IOU 1955 N. Umpqua Oregon 32.2 MW
Lemoyne: Conyers Ditch, ID J.R. Lemoyne Independent 1985 Conyers Ditch Idaho 0.1 MW
Libby: Kootenai River, MT U.S. Army Corps of Engineers Federal 1975 Kootenai River Montana 600 MW http://www.nws.usace.army.mil/PublicMenu/Menu.cfm?sitename=libby&pagename=libbymain Boat Launch Area, Boat Ramp, Camping Area, Food Services, Marina, Overlook, Picnic Area, Tailwater Fishing Facility, Tent, Trailer Sites, Visitor Center Libby Dam Project is a multi-purpose water resource development. Its purposes are flood reduction, hydropower, recreation, and environmental stewardship. We recognize that our day to day activities in operating a facility such as Libby Dam have a direct impact on the environment. Our goal is to operate Libby Dam to minimize negative impacts on the environment through pollution prevention and mitigation, and we are committed to continual improvement. Our commitment is to comply with environmental legislation, rules, and regulations. We encourage environmental stewardship at every level throughout the organization. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.0004aecec388a1d4bca6c&msa=0&ll=48.410061,-115.315933&spn=0.167731,0.349503 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Lilliwaup Falls: Lilliwaup Creek, WA William G. Reed Jr Independent 1986 Lilliwaup Creek Washington 1.4 MW
Linden Ranch: Goldendale Vicinity, WA S. CA Public Power Authority JOA 2010 Goldendale Vicinity Washington 50 MW http://www.scppa.org/
Little Falls: Spokane River, WA Avista Corporation IOU 1910 Spokane River Washington 32.0 MW http://www.avistacorp.com
Little Gold: Little Gold Creek, MT Boulder Hydro Independent 1983 Little Gold Creek Montana 0.4 MW
Little Goose: Snake River, WA U.S. Army Corps of Engineers Federal 1970 Snake River Washington 810 MW http://www.nww.usace.army.mil/Locations/District-Locks-and-Dams/Little-Goose-Lock-and-Dam/ Picnic Area, Swimming Area, Visitor Center Little Goose Lock and Dam is a hydroelectric, concrete, run-of-the-river dam in Columbia and Whitman counties in the state of Washington, on the Snake River.[2] The dam is located 9 miles (14 km) northeast of the town of Starbuck, and 25 miles (40 km) north of Dayton. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.00049894dde014616a8db&msa=0&ll=46.581047,-118.052216&spn=0.173678,0.349503 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Little Mac: Cedar Draw, ID T and R McCauley Independent 1988 Cedar Draw Idaho 1.5 MW
Little Wood Reservoir: Little Wood River, ID W. Arkoosh Independent 1988 Little Wood River Idaho 1.0 MW
Little Wood River Ranch: Little Wood River, ID Little Wood River Irr. Dist. Independent 1985 Little Wood River Idaho 2.8 MW
LM Angus Ranch: Warm Springs Creek, ID Independent Warm Springs Creek Idaho 0.9 MW
Long Lake: Spokane River, WA Avista Corporation IOU 1915 Spokane River Washington 70.0 MW http://www.avistacorp.com Access Area, Boat Launch Area, Boat Ramp, Camping Area, Hunting Area, Marina, Overlook, Park, Picnic Area, Playground Area, Swimming Area, Tent, Trailer Sites, Wildlife Area
Lookout Point: M. Fk. Willamette River, OR U.S. Army Corps of Engineers Federal 1955 M. Fk. Willamette River Oregon 120.0 MW http://www.nwp.usace.army.mil/locations/lookoutpoint.asp
Lookout Point Dam is an earth and gravel-filled dam with concrete gated spillways. It was completed in 1954 at a cost of $88.2 million. In coordination with Hills Creek and Fall Creek dams, the three dams work together for the purposes of flood risk management, water quality improvement, irrigation, fish and wildlife habitat and recreation. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.0004aecec8143204db04b&msa=0&ll=43.916011,-122.752991&spn=0.047361,0.077934 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Lost Creek: Rogue River, OR U.S. Army Corps of Engineers Federal 1977 Rogue River Oregon 49.2 MW http://www.nwp.usace.army.mil/locations/lostcreek.asp Lost Creek is an earthfill structure with a gated spillway. Jess Dam was the first of three multi-purpose storage projects completed in the Rogue River Basin project. Jess Dam’s authorized primary purposes include flood risk management, water quality improvement, irrigation, fish and wildlife habitat enhancement and recreation. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.0004aecec8143204db04b&msa=0&ll=42.672718,-122.67334&spn=0.092892,0.174751 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Low Line 1: Low Line Canal, ID Twin Falls Canal Co. Independent 1984 Low Line Canal Idaho 8.0 MW
Low Line 2: Low Line Canal, ID Twin Falls Canal Co. 1988 Low Line Canal Idaho 2.8 MW
Low Line 3: Low Line Canal, ID Twin Falls Canal Co. Independent 2007 Low Line Canal Idaho 2.3 MW
Lower Baker: Baker River, WA Puget Sound Energy IOU 1925 Baker River Washington 12.6 MW
Lower Granite: Snake River, WA U.S. Army Corps of Engineers Federal 1975 Snake River Washington 810 MW http://www.nww.usace.army.mil/html/pub/pertdata/granpd.htm Picnic Area, Swimming Area, Visitor Center Lower Granite Lock and Dam is a concrete gravity run-of-the-river dam on the Snake River, and bridges Whitman County and Garfield County, in the U.S. state of Washington.[4] The dam is located 22 miles (35 km) south of the town of Colfax, and 35 miles (56 km) north of Pomeroy. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.00049894dde014616a8db&msa=0&ll=46.662161,-117.425995&spn=0.346836,0.699005 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Lower Malad: Big Wood River, ID Idaho Power 1911 Big Wood River Idaho 13.5 MW Access Area, Picnic Area, Whitewater Boating
Lower Monumental: Snake River, WA U.S. Army Corps of Engineers Federal 1969 Snake River Washington 810 MW http://www.nww.usace.army.mil/html/pub/pertdata/lomopert.htm Boat Launch Area, Boat Ramp, Picnic Area, Swimming Area, Visitor Center Lower Monumental Lock and Dam is a hydroelectric, concrete, run-of-the-river dam on the Snake River, and bridges Franklin County and Walla Walla County, in the state of Washington. The dam is located six miles (10 km) south of the town of Kahlotus, and 43 miles (69 km) north of the town of Walla Walla. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.00049894dde014616a8db&msa=0&ll=46.562165,-118.537674&spn=0.347477,0.699005 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Lower Salmon: Snake River, ID Idaho Power Independent 1910 Snake river Idaho 60.0 MW Access Area, Boat Launch Area, Boat Ramp, Park, Picnic Area, Whitewater Boating
Lower Turnbull Drop: Spring Valley Canal, MT Turnbull Hydro Independent 2011 Spring Valley Canal Montana 7.7 MW
LQ-LS Drains: LS Drain & LQ Drain, ID Pigeon Cove Power Co. Independent 1984 LS Drain LQ Drain Idaho 1.8 MW
Lucky Peak: Boise River, ID Boise Proj. Board of Control Independent 1988 Boise River Idaho 101.2 MW
Madison: Madison River, MT PPL Montana Independent 1906 Madison River Montana 8.8 MW Boat Launch Area, Camping Area, Cottages, Cabins, Hunting Area, Marina, Picnic Area, Swimming Area, Tent, Trailer Sites, Trails, Whitewater Boating, Wildlife Area, Winter Sports
Magic Dam: Big Wood River, ID Magic Reservoir Hydro Inc. Independent 1989 Big Wood River Idaho 9.0 MW
Main Canal Headworks: Main Canal, WA Columbia Basin Irr. District Independent 1986 Main Canal Washington 26 http://www.columbiairrigation.com/
Marion Investment: N. Santiam River, OR Independent N. Santiam River Oregon 0.9 MW
Marsh Valley: Portneuf Marsh Valley Canal, ID Marsh Valley Hydroelectric Independent 1993 Portneuf Marsh Valley Canal Idaho 1.6 MW
Mayfield: Cowlitz River, WA Tacoma Power Municipal 1963 Cowlitz River Washington 162 MW http://www.mytpu.org/ Boat Launch Area, Boat Ramp, Camping Area, Fishing Pier, Food Services, Interpretive Display, Organizational, Groups, Overlook, Park, Picnic Area, Playground Area, Swimming Area, Visitor Center
Tacoma Power's largest electricity generating facility is the Cowlitz River Project. It produces enough renewable hydroelectric energy to serve more than 135,000 Northwest homes. The Cowlitz River Project produces hydroelectric power from the water stored behind Mayfield and Mossyrock dams. The Mayfield development, completed in 1963, includes a 250-foot-high (above bedrock), 850-foot-long, concrete arch and gravity dam that impounds Mayfield Lake. In addition to the Cowlitz River, inflows from the Tilton River also contribute to Mayfield Lake. An 854-foot-long power tunnel passes through the right abutment of the dam and terminates at a concrete forebay structure. Four penstocks continue from the forebay structure to the four 40,500 kilowatt vertical Francis turbines for an installed capacity of 162-megawatts. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.00049894dde014616a8db&msa=0&ll=46.504064,-122.586823&spn=0.347849,0.699005 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
McKenzie: McKenzie River, OR John H. Bigalow Independent 1957 McKenzie River Oregon 4.0 MW
McNary: Columbia River, OR/WA U.S. Army Corps of Engineers Federal 1953 Columbia River OregonWashington 990.5 MW http://www.nww.usace.army.mil/html/OFFICES/PA/FactSheets/MCN_2008dpi72.pdf Boat Launch Area, Boat Ramp, Picnic Area, Tailwater Fishing Facility, Visitor Center McNary Dam is a 1.4-mile (2.2-km) long concrete gravity run-of-the-river dam which spans the Columbia River. It joins Umatilla County, Oregon with Benton County, Washington, 292 miles (470 km) upriver from the mouth of the Columbia at Astoria, Oregon. The dam provides for slackwater navigation, hydroelectric power generation, recreation, wildlife habitat, and incidental irrigation. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.00049894dde014616a8db&msa=0&ll=45.938855,-119.30912&spn=0.087862,0.174751 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Merwin: Lewis River, WA PacifiCorp IOU 1932 Lewis River Washington 136 MW http://www.pacificorp.com/index.html Boat Launch Area, Boat Ramp, Park, Picnic Area, Playground Area, Swimming Area, Trails
Meyers Falls: Colville River, WA Hydro Technology Systems Independent 1915 Colville River Washington 1.2 MW http://home.earthlink.net/~hydrotech/
Middle Fork Irrigation District 1: W. Evans Creek, OR Middle Fork Irr. Dist. Independent 1987 W. Evans Creek CaliforniaOregon 0.6 MW
Middle Fork Irrigation District 2: Irr. Conduit, OR Middle Fork Irr. Dist. Independent 1987 Irr. Conduit Oregon 0.6 MW
Middle Fork Irrigation District 3: Clear Branch, OR Middle Fork Irr. Dist. Independent 1987 Clear Branch Oregon 2.1 MW
Mile 28: Milner-Gooding Canal, ID Independent 1994 Milner-Gooding Canal Idaho 1.4 MW
Mill Creek (Cove): Mill Creek, OR City of Cove Independent 1984 Mill Creek Oregon 1.0 MW
Mill Creek: Mill Creek, WA L.S. Walker Independent 1983 Mill Creek Washington .6 MW
Milner: N. Side Main Canal, ID Milner Dam Inc. Independent 1905 N. Side Main Canal Idaho 0.8 MW
Milner: Twin Falls Main Canal, ID Idaho Power Independent 1992 Twin Falls Main Canal Idaho 58.7 MW Access Area, Boat Launch Area, Boat Ramp, Camping Area, Hunting Area, Interpretive Display, Park, Picnic Area, Tailwater Fishing Facility, Tent, Trailer Sites, Trails, Visitor Center, Whitewater Boating, Wildlife Area
Miltown 1-5: Clark Fork River, MT North Western Energy IOU 1908 Clark Fork River IdahoMontana 3.0 MW
Minidoka: Snake River, ID Bureau of Reclamation Federal 1927 Snake River Idaho 27.6 MW http://www.usbr.gov/projects/Facility.jsp?fac_Name=Minidoka+Dam Minidoka Dam is a combined diversion, storage, and power structure located just south of Minidoka, Idaho.The reservoir behind the dam is Lake Walcott. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.0004aeceb83bc26289c57&msa=0&ll=42.67032,-113.48465&spn=0.364514,0.595322 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Minikahda: Minikahda Creek, OR P.M. Sanders Independent Minikahda Creek Oregon 0.1 MW
Mink Creek: Mink Creek, ID R. Fackrell Independent 1986 Mink Creek Idaho 3.1 MW
Mirror Lake: Nooksack River, WA Hutchinson Hydro Independent 1983 Nooksack River, M. Fk. Washington 1 MW http://canyonhydro.com/
Mitchell Butte: Mitchell Butte Lateral, OR Owyhee Project Irr. Dist. Independent 1989 Mitchell Butte Lateral Oregon 1.9 MW
Monroe Street: Spokane River, WA Avista Corporation IOU 1890 Spokane River Washington 14.82 MW http://www.avistacorp.com Access Area, Interpretive Display, Overlook, Park, Picnic Area
Mora Canal Drop: Mora Canal, ID Boise Proj. Board of Control Independent 2006 Mora Canal Idaho 1.7 MW
Morony: Missouri River, MT PPL Montana Independent 1930 Missouri River Montana 45.0 MW Access Area, Boat Launch Area, Boat Ramp, Tailwater Fishing Facility, Trails, Whitewater Boating, Wildlife Area
Morse Creek: Morse Creek, WA City of Port AngelesHutchinson Hydro Municipal 1987 Morse Creek Washington .5 MW http://www.cityofpa.us/
Mossyrock: Cowlitz River, WA Tacoma Power Municipal 1968 Cowlitz River Washington 300.0 MW http://www.mytpu.org/tacomapower/Default.htm Boat Launch Area, Boat Ramp, Camping Area, Fishing Pier, Food Services, Interpretive Display, Organizational, Groups, Overlook, Park, Picnic Area, Playground Area, Swimming Area, Visitor Center
Tacoma Power's largest electricity generating facility is the Cowlitz River Project. It produces enough renewable hydroelectric energy to serve more than 135,000 Northwest homes. The Cowlitz River Project produces hydroelectric power from the water stored behind Mayfield and Mossyrock dams. Tacoma Power’s Mossyrock Dam, completed in 1968, stands 606 feet from bedrock and is Washington’s tallest dam. It produces enough electricity to serve more than 78,000 Northwest homes. This double curvature concrete arch dam has three penstocks between 248 to 285 feet in length that extend down to the powerhouse, which is adjacent to the base of the dam. The powerhouse contains two turbine generators and has room for a third. Tacoma Power has tackled the huge job of replacing both of the existing turbine generators. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.00049894dde014616a8db&msa=0&ll=46.535012,-122.423916&spn=0.086913,0.174751 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Moyie River Lower: Mora Canal, ID City of Bonners Ferry Municipal 1942 Moyie River Idaho 2.0 MW
Moyie River Third: Moyie River, ID City of Bonners Ferry Municipal 1982 Moyie River Idaho 1.5 MW
Moyie River Upper: Moyie River, ID City of Bonners Ferry Municipal 1921 Moyie River Idaho 0.5 MW
Mt Tabor: Mt. Tabor Res. No. 5, OR Independent Oregon 0.2 MW
Mud Creek A: Mud Creek, ID S and S Limited Partnership Independent 1982 Mud Creek Idaho 0.4 MW
Mud Creek B: Present Ditch, ID S and S Limited Partnership Independent 1982 Present Ditch Idaho 0.2 MW
Mystic Lake: W. Rosebud Creek, MT PPL Montana Independent 1925 W. Rosebud Creek Montana 12.4 MW Access Area, Camping Area, Hunting Area, Interpretive Display, Picnic Area, Tent, Trailer Sites, Trails, Wildlife Area, Winter Sports
N-32: N. 32 Lateral Canal, ID Marcos Ranches Independent 1985 N. 32 Lateral Canal Idaho 0.6 MW
New Felt: Teton River, ID Fall River REA Coop 1986 Teton River Idaho 1.3 MW
Newhalem Creek: Newalem Creek, WA Seattle City Light Municipal 1921 Newhalem Creek Washington 2.1 http://www.seattle.gov/
Nicholson: Uncle Ike Creek, ID O. Nicholson Independent 1986 Uncle Ike Creek Idaho 0.5 MW
Nicohls Gap: Nicohls Branch Tribe, OR GB and PP Ryan Independent 1986 Nicohls Branch Tribe Oregon 0.9 MW
Nine Mile: Spokane River, WA Avista Corporation IOU 1908 Spokane River Washington 12.0 MW http://www.avistacorp.com Access Area, Camping Area, Interpretive Display, Park, Picnic Area, Tent, Trailer Sites, Trails, Whitewater Boating
Nooksack: Nooksack River, WA Arch Ford IOU 1906 N. Fk. Nooksack River Washington 1.5 MW http://www.pse.com/Pages/default.aspx
North Fork Sprague River: Sprague River N. Fork, OR HDI Assoc. and VFD Ehlers Independent 1989 Sprague River N. Fork Oregon 1.2 MW
North Fork: Clackamas River, OR Portland General Electric IOU 1958 Clackamas River Oregon 40.8 MW Access Area, Boat Launch Area, Boat Ramp, Camping Area, Fishing Pier, Food Services, Marina, Park, Picnic Area, Tent, Trailer Sites
North Willow Creek: N. Willow Creek, MT G and G Ohs Independent 1988 N. Willow Creek Montana 0.4 MW
Noxon Rapids: Clark Fork River, MT Avista Corporation IOU 1959 Clark Fork River Montana 480.6 MW Access Area, Boat Launch Area, Boat Ramp, Camping Area, Fishing Pier, Golf Course, Hunting Area, Overlook, Park, Picnic Area, Swimming Area, Tent, Trailer Sites, Whitewater Boating, Winter Sports
O.J. Power Company: Mill Creek, ID O.J. Power Co. Independent 1986 Mill Creek Idaho 0.2 MW
Oak Grove: Clackamas River Oak Grove Fork, OR Portland General Electric IOU 1924 Clackamas River Oak Grove Fork Oregon 51.0 MW Access Area, Boat Launch Area, Boat Ramp, Camping Area, Fishing Pier, Organizational, Groups, Picnic Area, Tent, Trailer Sites
Odell Creek: Odell Creek, OR F.L. Plog Independent 1984 Odell Creek Oregon 0.2 MW
Oneida: Bear River, ID PacifiCorp IOU 1915 Bear River Idaho 30.0 MW Boat Launch Area, Boat Ramp, Camping Area, Picnic Area, Tent, Trailer Sites
Opal Springs: Crooked River, OR Deschutes Valley Wtr. Dist. Independent 1920 Crooked River Oregon 4.3 MW
Orchard Avenue: Tieton River, WA Yakima-Tieton Irrigation Dist Independent 1987 Tieton River Washington 1.6 MW http://www.wswra.org/irrigation_district_members.html
Oregon City: Willamette River, OR Portland General Electric IOU 1916 Willamette River Oregon 1.5 MW
Owyhee Dam: Owyhee River, OR Owyhee Project Irr. Dist. Independent 1985 Owyhee River Oregon 4.3 MW
Owyhee Tunnel No. 1: Owyhee Lake, OR Owyhee Project Irr. Dist. Independent 1993 Owyhee Lake Oregon 7.0 MW
Oxbow: Snake River, ID/OR Idaho Power IOU 1961 Snake River Idaho 190.0 MW
Packwood Lake: Lake Creek, WA Energy Northwest JOA 1964 Lake Creek Washington 27.5 MW Camping Area, Trails
Palisades: Snake River, ID Bureau of Reclamation Federal 1957 Snake River Idaho 176.4 MW http://www.usbr.gov/projects/Facility.jsp?fac_Name=Palisades+Dam Palisades Dam is located on the Snake River about 55 miles southeast of Idaho Falls, Idaho. It is a large zoned earthfill structure 270 feet high, has a crest length of 2,100 feet, and contains 13,571,000 cubic yards of material. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.0004aeceb83bc26289c57&msa=0&ll=43.334668,-111.204987&spn=0.394555,0.599442 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Paris: Weilenmann Canal, ID PacifiCorp IOU 1910 Weilenmann Canal Idaho 0.7 MW
Pelton Regulation Dam: Deschutes River, OR Warm Spring Tribal Council Independent 1957 Deschutes River Oregon 18.9 MW Access Area, Boat Launch Area, Boat Ramp, Marina, Picnic Area, Tailwater Fishing Facility, Visitor Center
Pelton: Deschutes River, OR Portland General ElectricWarm Springs Power Enterprises IOU/Independent 1957 Deschutes River Oregon 109.8 MW
Philipsburg A: Fred Burr Creek, MT Edelman Enterprises Inc. Independent 1981 Fred Burr Creek Montana 0.1 MW
Philipsburg B: Fred Burr Creek, MT Edelman Enterprises Inc. Independent 1981 Fred Burr Creek Montana 0.1 MW
Pine Creek: Pine Creek, MT H. M. Carter Independent 1975 Pine Creek Montana 0.4 MW
Port Townsend: Big Quilcene River, WA Port Townsend Paper Corp. Independent 1982 Big Quilcene River Washington .4 MW http://www.ptpc.com/
Portneuf River: Portneuf River, ID Commercial Energy Management Independent 1993 Portneuf River Idaho 0.9 MW
Post Falls: Spokane River, ID Avista Corporation IOU 1906 Spokane River Idaho 14.8 MW Access Area, Boat Launch Area, Boat Ramp, Camping Area, Cottages, Cabins, Food Services, Golf Course, Interpretive Display, Marina, Organizational, Groups, Overlook, Park, Picnic Area, Playground Area, Tent, Trailer Sites, Trails, Wildlife Area
Potholes East Canal 66.0: Potholes Canal, WA Columbia Basin Irr. District Independent 1985 Potholes E. Canal Washington 2.4 MW http://www.columbiairrigation.com/
Potholes East Canal Headworks: Potholes Canal, WA Columbia Basin Irr. District Independent 1990 Potholes E. Canal Washington 6.6 MW http://www.columbiairrigation.com/
Preston: Berquist Spring, ID Independent 1987 Berquist Spring Idaho 0.4 MW
Priest Rapids: Columbia River, WA Grant County PUD PUD 1959 Columbia River Washington 955.6 MW http://www.gcpud.org/ Access Area, Boat Launch Area, Boat Ramp, Camping Area, Food Services, Golf Course, Hunting Area, Marina, Park, Picnic Area, Playground Area, Swimming Area, Tailwater Fishing Facility, Tent, Trailer Sites, Wildlife Area Priest Rapids Dam is located on the Columbia River, 24 miles south of Vantage and 200 miles downstream from Grand Coulee Dam. The dam was named in recognition of the Wanapum religious leader Smowhalla and the small band of indigenous people that lived during the winter at a village near the last of seven rapids, called Priest Rapids. A small group of the Wanapum continues to live alongside the tailrace of the dam. Construction Start: July 1956 Power Generation Began: October 1959 General Construction Contract Cost: $91,880,625 Length: 10,103 feet Maximum Height from Deepest Excavation Point: 178 feet Spillway Length: 1,142 feet Number of Tainter Gates: 22 (each gate is 40 feet X 50 feet) Number of Turbines: 10 Horsepower of Each Turbine: 114,000 [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.00049894dde014616a8db&msa=0&ll=46.645194,-119.900665&spn=0.351658,0.846634 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Pristine Spring: Well, ID Independent 2005 Well Idaho 0.1 MW
Prospect 1: Rogue River, OR PacifiCorp IOU 1912 Rogue River Oregon 3.8 MW Picnic Area
Prospect 2: Rogue River, OR PacifiCorp IOU 1920 Rogue River Oregon 32.0
Prospect 3: Rogue River, OR PacifiCorp IOU 1932 Rogue River, South Fork Oregon 7.2 MW
Prospect 4: Rogue River (Off-Stream), OR PacifiCorp IOU 1944 Rogue River (Off-Stream) Oregon 1.0 MW
Quincy Chute: West Canal, WA Grand Coulee Project Hydroelectric Authority Independent 1985 West Canal Washington 7.8 MW
Rainbow Redevelopment: Missouri River, MT PPL Montana Independent 2011 Missouri River Montana 23.5 MW Access Area, Golf Course, Hunting Area, Interpretive Display, Overlook, Park, Picnic Area, Playground Area, Trails, Visitor Center
Rainbow: Missouri River, MT PPL Montana Independent 1910 Missouri River Montana 35.6 MW
Reeder Gulch: Ashland Creek, OR City of Ashland Municipal 1985 Ashland Creek Oregon .08 MW
Reynolds Irrigation District: Reynolds ID Main Canal, ID Reynolds Irr. Dist. Independent 1985 Reynolds ID Main Canal Idaho 0.4 MW
Rim View: Niagara Springs, ID Rim View Trout Co. Independent 2000 Niagara Springs Idaho 0.3 MW
River Mill: Clackamas River, OR Portland General Electric IOU 1911 Clackamas River Oregon 19.1 MW
Rock Creek 1-2: Rock Creek, OR Oregon Trail REA Coop 1905 Rock Creek Oregon 0.8 MW
Rock Creek: Rock Creek, ID Cogeneration Inc. Independent 1983 Rock Creek Idaho 2.5 MW
Rock Creek: Rock Creek, ID Bonneville Pacific Hydro Independent 1988 Rock Creek Idaho 1.9 MW
Rock Island: Columbia River, WA Chelan Co. PUD PUD 1931 Columbia River Washington 623.7 MW http://www.chelanpud.org/ Access Area, Boat Launch Area, Boat Ramp, Camping Area, Food Services, Golf Course, Interpretive Display, Overlook, Park, Picnic Area, Playground Area, Swimming Area, Trails, Wildlife Area, Winter Sports The Rock Island Hydroelectric Project is located near the geographical center of Washington state on the Columbia River. Development began in January, 1930; four generating units were operational in 1933. Six additional generating units were added to the initial powerhouse beginning in 1951. Work was completed on this phase of construction in 1953. A second powerhouse was constructed from 1974 through 1979. This powerhouse contains eight 'bulb type' turbine generating units, which are mounted horizontally in the water passage as opposed to the traditional vertical orientation. The bulb turbine generating units were the first installed in the United States and were the largest in the world when installed. The Rock Island Project reservoir extends upriver about 20 miles. Chelan County Public Utility District has constructed several parks along the reservoir shoreline for public use. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.00049894dde014616a8db&msa=0&ll=47.346035,-120.090866&spn=0.171212,0.349503 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Rocky Reach: Columbia River, WA Chelan Co. PUD PUD 1956 Columbia River Washington 1299.6 MW http://www.chelanpud.org/ Access Area, Boat Launch Area, Boat Ramp, Camping Area, Food Services, Interpretive Display, Organizational, Groups, Park, Picnic Area, Playground Area, Swimming Area, Tent, Trailer Sites, Trails, Visitor Center, Wildlife Area The Rocky Reach Project is located in mid-Washington state on the Columbia River, about seven miles upstream from the city of Wenatchee. By river, the dam is 215 miles below the Canadian border and 473 miles above the mouth of the Columbia. Construction of the dam and powerhouse began in 1956; the initial seven generating units were placed in commercial operation in November 1961. In 1969, four additional generating units were added to the project; construction was completed in 1971. Lake Entiat, the Rocky Reach Project reservoir, extends upriver for 43 miles. Chelan County Public Utility District has constructed several major parks along the reservoir shoreline for public use. The dam and its visitor facilities are easily accessible to visitors from Highway 97A. Visitor facilities include 30 acres of award-winning grounds, a visitor center and cafe, fish viewing, movies, historical galleries, and guided tours. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.00049894dde014616a8db&msa=0&ll=47.537833,-120.280037&spn=0.085294,0.174751 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Ross Creek: Ross Creek, MT Ross Creek Hydro Independent 1996 Ross Creek Montana 0.5 MW
Ross: Skagit River, WA Seattle City Light Municipal 1952 Skagit River Washington 338.6 MW http://www.seattle.gov/ Camping Area, Hunting Area, Overlook, Swimming Area, Trails, Wildlife Area
Round Butte: Deschutes River, OR Portland General ElectricWarm Springs Power Enterprises IOU/Independent 1964 Deschutes River Oregon 300.0 MW
Roza: Yakima River, WA Bureau of Reclamation Federal 1956 Yakima River Washington 11.3 MW http://www.usbr.gov/projects/Facility.jsp?fac_Name=Roza+Diversion+Dam Roza Diversion Dam, located 10 miles north of Yakima, diverts water from the Yakima River. The dam is a concrete weir, movable crest structure, 486 feet long at the crest, 67 feet high, and contains 21,700 cubic yards of concrete. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.00049894dde014616a8db&msa=0&ll=46.74833,-120.475044&spn=0.091746,0.137501 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Russell D. Smith: Potholes Canal, WA S. Columbia Basin Irr. District Independent 1982 Potholes E. Canal Washington 6.1 MW
Ryan: Missouri River: MT PPL Montana Independent 1915 Missouri River Montana 48.0 Interpretive Display, Overlook, Picnic Area, Trails
S. Gooding Main Canal, ID Mutual Energy Co. Independent 1984 S. Gooding Main Canal Idaho 0.3 MW
Sahko: Kastelu Drain, ID JM Miller Enterprises Independent 2006 Kastelu Drain Idaho 0.5 MW
Salt River: Salt River, WY Scott D. Heiner Independent 1964 Salt River IdahoWyoming 1.1 MW
Schaffner: Sandy Creek W. Fork, ID DBA Schaffner Power Co. Independent 1986 Sandy Creek W. Fork Idaho 0.5 MW
Seminoe: North Platte River, WY Bureau of Reclamation Federal 1939 North Platte River Wyoming 51 MW http://www.usbr.gov/projects/Facility.jsp?fac_Name=Seminoe+Dam&groupName=General
Seminoe Dam is a concrete-arch structure. Dam and powerplant construction began in 1936 and was completed in 1939. The powerplant was updated in the mid-1970s, and other improvements made starting in 2001. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.0004aecec93bb93059592&msa=0&ll=42.1558,-106.908388&spn=0.025133,0.038967 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Shasta: Sacramento River, CA Bureau of Reclamation Federal 1984 Sacramento River CaliforniaIdaho 422 MW http://www.usbr.gov/projects/Facility.jsp?fac_Name=Shasta+Dam
Shasta Dam (called Kennett Dam before its construction) is an arch dam across the Sacramento River in the northern part of the U.S. state of California, at the north end of the Sacramento Valley. The dam mainly serves long-term water storage and flood control in its reservoir, Shasta Lake, and also generates hydroelectric power. At 602 feet (183 m) high, it is the ninth-tallest dam in the United States and forms the largest reservoir in California. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.0004aececaaced57f56c2&msa=0&ll=40.700422,-122.419968&spn=0.411247,0.623474 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Shingle Creek: Shingle Creek S. Fork, ID W. D. Deveny Independent 1984 Shingle Creek S. Fork Idaho 0.2 MW
Shoshone (Buffalo Bill Dam): Shoshone River, WY Bureau of Reclamation Federal 1910 Shoshone River Wyoming 3 MW http://www.usbr.gov/projects/Facility.jsp?fac_Name=Buffalo+Bill+Dam Buffalo Bill Dam is a concrete arch-gravity dam on the Shoshone River in the U.S. state of Wyoming. The dam is named after the famous old West figure William "Buffalo Bill" Cody who founded the nearby town of Cody and who owned much of the land now covered by the reservoir formed by the dam, which also bears his name. The dam is part of the Shoshone Project, one of the first projects overseen by the Bureau of Reclamation. The Shoshone project is the successor to several visionary schemes promoted by Cody to irrigate the Bighorn Basin, turning it from a semi-arid sagebrush-covered plain to productive agricultural land.[3] It was known at the time of its construction as Shoshone Dam, and was renamed in 1946 to honor Buffalo Bill Cody.
Shoshone Falls: Snake River, ID Idaho Power Federal 1907 Snake River Idaho 12.5 MW
Shoshone/Shoshone ll: Little Wood River, ID Shorock Hydro Inc. Independent 1982 Little Wood River Idaho 0.9 MW
Skookumchuck: Skookumchuck River, WA PacifiCorp IOU 1990 Skookumchuck River Washington 1 MW http://www.pacificorp.com/index.html
Slate Creek: Slate Creek, CA Slate Creek Hydro Associates Independent 1984 Slate Creek CaliforniaIdaho 4.2 MW
Slaughterhouse Gulch: Slaughterhouse Gulch, ID Heed Co. Independent 1983 Slaughterhouse Gulch Idaho 0.1 MW
Slide Creek: N. Umpqua River, OR PacifiCorp IOU 1951 N. Umpqua River Oregon 18.0 MW
Smith Creek, Smith Creek, ID Smith Creek Hydro LLC Municipal 1989 Smith Creek, tributary to Kootenai River Idaho 38 MW The Smith Creek Hydroelectric Project was constructed in 1989. In 2001 EWEB bought the project from the developer. Located on Smith Creek, a tributary to the Kootenai River, it is approximately five miles from the Canadian board in Northern Idaho. The project is sometimes referred to as "Smith Falls," due to natural 60-foot high falls on Smith Creek, located downstream of the power plant tailrace. The falls serves as a natural barrier to White Sturgeon, an endangered species in the Kootenai River. The project consists of the following:
  • 75-foot long, 8-foot high diversion dam, fish ladder and screened intake to the penstock housed inside a steel building
  • 5.3-mile, 6-foot diameter steel penstock that carries water from the diversion dam to the power plant
  • Power plant that contains two horizontal shaft Pelton turbines, each driving a synchronous generator rated at 18 megawatts and a third horizontal shaft Pelton turbine, driving a synchronous generator rated at 2.1 megawatts
  • A substation
  • 30-mile, 115-kilovolt transmission line that terminates at the Bonneville Power Administration's Bonner's Ferry Substation.
Smith Creek: Smith Creek, WA R.B. Shipp Independent Smith Creek Washington .1 MW
Snake River Pottery: Snake River Tribe, ID A. Bowler Independent 1984 Snake River Tribe Idaho 0.1 MW
Snedigar Ranch: Coulee Creek, ID Snedigar Ranch Independent 1985 Coulee Creek Idaho 0.2 MW
Snoqualmie Falls 1: Snoqualmie River, WA Puget Sound Energy IOU 1898 Snoqualmie River Washington 42 MW http://www.pse.com/Pages/default.aspx Access Area, Interpretive Display, Overlook, Park, Picnic Area, Trails, Visitor Center, Whitewater Boating
Snoqualmie Falls 2: Snoqualmie River, WA Puget Sound Energy IOU 1910 Snoqualmie River Washington 32.5 MW http://www.pse.com/Pages/default.aspx
Soda Creek 4: Soda Creek, ID City of Soda Springs Municipal 1954 Soda Creek Idaho 0.5 MW
Soda Creek 5: Soda Creek, ID City of Soda Springs Municipal 1989 Soda Creek Idaho 0.4 MW
Soda Springs Dam: N. Umpqua River, OR PacifiCorp Independent 1952 N. Umpqua River Oregon 11.0 MW
Soda: Bear River, ID PacifiCorp IOU 1924 Bear River Idaho 14.0 MW Access Area, Boat Launch Area, Boat Ramp, Park
South Dry Creek: Rock Creek, Clear Creek Ditch, MT Hydrodynamics Inc. Independent 1985 Rock Creek, Clear Creek Ditch Montana 2.0 MW
South Fork Tolt: Tolt River, WA Seattle City Light Municipal 1995 S. Fk. Tolt River Washington 16.8 MW http://www.seattle.gov/
South Willow Creek B: South Willow Creek, MT Potosi Generating Station Independent 1980 South Willow Creek Montana 0.3 MW
Spring Creek: Spring Creek, Sacramento River, CA Bureau of Reclamation Federal 1963 Spring Creek, Sacramento River California 150 MW http://www.usbr.gov/projects/Facility.jsp?fac_Name=Spring+Creek+Debris+Dam&groupName=Overview The Spring Creek Debris Dam is an earthfill dam on Spring Creek, a tributary of the Sacramento River, in Shasta County in the U.S. state of California. Completed in 1963, the dam, maintained by the U.S. Bureau of Reclamation, serves primarily to collect severe acid mine drainage stemming from the Iron Mountain Mine.[1] The dam forms the Spring Creek Reservoir, less than 1 mile (1.6 km) long. Spring Creek and South Fork Spring Creek flow into the reservoir from a 16-square-mile (41 km2) watershed.[2] The dam is directly upstream from the city of Keswick, California and the Keswick Reservoir.[3] The operation is part of the Trinity River Division of the Central Valley Project.[1] [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.0004aececaaced57f56c2&msa=0&ll=40.629872,-122.474179&spn=0.02573,0.038967 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
St. Anothany: Henry’s Fork, ID PacifiCorp IOU 1915 Henry's Fork Idaho 0.5 MW
Stayton: Santiam Wtr. Cntrl. Dist. Canal, OR Santiam Water Control District Independent 1937 Santiam Wtr. Cntrl. Dist. Canal Oregon 0.6 MW
Stevenson No. 1: Snake River Tribe, ID L.E. Stevenson Independent 1979 Snake River Tribe Idaho 0.1 MW
Stevenson No. 2: Snake River Tribe, ID L.E. Stevenson Independent 1980 Snake River Tribe Idaho 0.1 MW
Stone Creek: Oak Grove Fork Clackamas River, OR Eugene Water and Electric Board Municipal 1994 Clackamas R., Oak Grove Fork Oregon 12.0 MW http://www.eweb.org/ The project lies between Portland General Electric's (PGE) Timothy Lake and PGE's Oak Grove Hydroelectric Project. Water is diverted from the Oak Grove Fork of the Clackamas River just downstream from its junction with Stone Creek, which is about one mile downstream from Timothy Lake. It's considered a run-of-the-river project capable of producing 12 megawatts peak, with an average production of 8 megawatts. The Stone Creek Hydroelectric Project consists of the following facilities:
  • 300-foot long, 12-foot high diversion dam and fish ladder
  • 4.6-mile, 6-foot diameter steel penstock that carries water from the diversion dam to the power plant
  • A power plant that contains one vertical shaft Pelton turbine driving a synchronous generator rated at 12 megawatts
  • A substation
  • A 17-mile 34.5 kilovolt (kV) transmission line, half of which is underground and the remainder overhead. The transmission line terminates at PGE's Harriet Substation.
The power generated at Stone Creek is wheeled through PGE and Bonneville Power Administration transmission lines to EWEB. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.0004aecec8143204db04b&msa=0&ll=45.108908,-121.759071&spn=0.184878,0.311737 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Strawberry Creek 1-3: Strawberry Creek, WY Lower Valley Energy Coop 1951 Strawberry Creek Wyoming 1.5 MW
Strawberry Creek: Strawberry Creek, MT C and I Allen Independent 1987 Strawberry Creek IdahoMontana 0.3
Sullivan: Clackamas R., Oak Grove Fork, OR Portland General Electric IOU 1895 Clackamas R., Oak Grove Fork Oregon 15.4 MW Access Area, Boat Launch Area, Boat Ramp, Park, Picnic Area
Summer Falls: Main Canal, WA Columbia Basin Irr. District Independent 1984 Main Canal Washington 92 MW http://www.columbiairrigation.com/
Sunshine: Lake Creek, ID A.W. Brown Independent 1987 Lake Creek Idaho 0.1 MW
Swan Falls: Snake River, ID Idaho Power IOU 1901 Snake River Idaho 25.0 Access Area, Boat Launch Area, Boat Ramp, Canoe Portages, Park, Picnic Area, Whitewater Boating
Swift 1: Lewis River, WA PacifiCorp IOU 1958 Lewis River Washington 240 MW http://www.pacificorp.com/index.html Boat Launch Area, Boat Ramp, Camping Area, Picnic Area, Tent, Trailer Sites
Swift 2: Lewis River, WA Cowlitz PUD PUD 1958 Lewis River Washington 70 MW http://www.cowlitzpud.org/
Swift Creek: Swift Creek, WY Lower Valley Energy Coop 1942 Swift Creek Wyoming 1.5 MW
Sygitowicz Creek: Sygitowicz Creek, WA D.S. Marr Independent 1986 Sygitowicz Creek Washington .5 MW
Telford: Bell Mountain Creek, ID Pancheri Inc. Independent 1984 Bell Mountain Creek Idaho 0.2 MW
The Dalles North Fishway: Columbia River, WA Northern Wasco Co. PUD PUD 1991 Columbia River Washington 4.9 MW http://www.nwasco.com/
The Dalles: Columbia River, OR/WA U.S. Army Corps of Engineers Federal 1957 Columbia River OregonWashington 1807 MW http://www.nwp.usace.army.mil/locations/thedalles.asp Boat Launch Area, Boat Ramp, Picnic Area, Tailwater Fishing Facility, Visitor Center The Dalles Lock and Dam is 192 miles upriver from the mouth of the Columbia River and two miles east of the city of The Dalles, Ore. The project consists of a navigation lock, spillway, powerhouse and fish passage facilities. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.00049894dde014616a8db&msa=0&ll=45.614037,-121.133366&spn=0.087775,0.200844 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Thompson Falls: Clark Fork River, MT PPL Montana Independent 1915 Clark Fork River Montana 87.5 Access Area, Boat Launch Area, Boat Ramp, Cottages, Cabins, Food Services, Golf Course, Hunting Area, Interpretive Display, Overlook, Park, Picnic Area, Swimming Area, Tailwater Fishing Facility, Wildlife Area
Thompson’s Mills: Calipooia River, OR Boston Power Co. Inc. Independent 1986 Calipooia River Oregon 0.1 MW
Thousand Springs: Snake River, ID Idaho Power IOU 1912 Snake River Idaho 8.8 MW
Tiber-Montana: Marias River, MT Dry Creek LLC Independent 2004 MW Marias River Montana 7.5 MW
Tieton: Yakima River, WA American Energy Independent 2006 Yakima River (Rimrock Dam) Washington 13.6 MW http://www.americanenergy.com/
Toketee Falls: N. Umpqua River, OR PacifiCorp IOU 1963 N. Umpqua River Oregon 42.6
Trinity: Phelps Creek, WA Trinity Conservancy Inc Independent 1923 Phelps Creek Washington 0.2 MW
Trinity: Trinity River, CA Bureau of Reclamation Federal 1962 Trinity River California 106 MW http://www.usbr.gov/projects/Project.jsp?proj_Name=Shasta/Trinity River Division Project

Trinity Dam stores water from the Trinity River in Clair Engle Lake. Water is released through Trinity Powerplant.

[cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.0004aececaaced57f56c2&msa=0&ll=40.801336,-122.762604&spn=0.199334,0.392761 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Tuttle Ranch: Big Wood River, ID V. F. Ravenscroft Independent 1983 Big Wood River Idaho 1.1 MW
Twin Falls: Snake River, ID Idaho Power IOU 1935 Snake River Idaho 52.7 MW Access Area, Boat Launch Area, Boat Ramp, Park, Picnic Area
Twin Falls: Snoqualmie River S. Fork, WA Twin Falls Hydro Associates Independent 1989 Snoqualamie River, S. Fk. Washington 20 MW
Twin Reservoirs: Mill Creek, WA City of Walla Walla IndependentMunicipal 1988 Mill Creek Washington 2.2 MW http://www.ci.walla-walla.wa.us/
Upper Baker: Baker River, WA Puget Sound Energy IOU 1959 Baker River Washington 104.8 MW
Upper Falls: Spokane River, WA Avista Corporation IOU 1922 Spokane River Washington 10.0 MW http://www.avistacorp.com Access Area, Cottages, Cabins, Food Services, Interpretive Display, Overlook, Park, Trails
Upper Little Sheep Creek: Wallowa Valley Imp. Dist. Canal, OR Joseph Hydro Assoc. Independent 1984 Wallowa Valley Imp. Dist. Canal IdahoOregon 4.3 MW
Upper Malad: Big Wood River, ID Idaho Power IOU 1948 Big Wood River Idaho 8.3 MW Access Area, Picnic Area, Whitewater Boating
Upper Salmon 3 & 4: Snake River, ID Idaho Power IOU 1947 Snake River Idaho 16.5 Access Area, Boat Launch Area, Boat Ramp, Park, Picnic Area
Upper Salmon: Snake River, ID Idaho Power IOU 1937 Snake River Idaho 18.0 MW
Upper Turnbull Drop: Spring Valley Canal, MT Turnbull Hydro Independent 2011 Spring Valley Canal Montana 5.3 MW
Upriver: Spokane River, WA City of Spokane Municipal 1894 Spokane River Washington 17.6 http://www.spokanecity.org/
Wallowa Falls: Wallowa Creek E. Fork, OR IOU 1921 Wallowa Creek E. Fork IdahoOregon 1.1 MW
Wanapum: Columbia River, WA Grant County PUD PUD 1963 Columbia River Washington 1038 MW http://www.gcpud.org/ Access Area, Boat Launch Area, Boat Ramp, Camping Area, Food Services, Golf Course, Hunting Area, Interpretive Display, Marina, Overlook, Park, Picnic Area, Playground Area, Swimming Area, Tailwater Fishing Facility, Trails, Visitor Center, Wildlife Area The dam was named in recognition of the Wanapum religious leader Smowhalla and the small band of indigenous people that lived during the winter at a village near the last of seven rapids, called Priest Rapids.  A small group of the Wanapum continues to live alongside the tailrace of the dam. Construction Start: July 1956 Power Generation Began: October 1959 General Construction Contract Cost: $91,880,625 Length: 10,103 feet Maximum Height from Deepest Excavation Point: 178 feet Spillway Length: 1,142 feet Number of Tainter Gates: 22 (each gate is 40 feet X 50 feet) Number of Turbines: 10 Horsepower of Each Turbine: 114,000 [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.00049894dde014616a8db&msa=0&ll=46.879907,-119.96933&spn=0.175065,0.423317 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Wapato Drop 2: Wapato Main Canal, WA Yakama Nation Tribal 1942 Wapato Main Canal, Yakima River Washington 2.5 MW http://www.yakamamuseum.com/
Wapato Drop 3: Wapoto Main Canal, WA Yakama Nation Tribal 1932 Wapato Main Canal, Yakima River Washington 1.6 MW http://www.yakamamuseum.com/
Warm Springs 1: Warm Spring Creek, ID W. and V. Ingram Independent 1986 Warm Springs Creek Idaho 1.1 MW
Warm Springs 2: Warm Springs Creek, ID W. and V. Ingram Independent 1986 Warm Springs Creek Idaho 0.5 MW
Water Street: Stayton Power Canal, OR Santiam Water Control District Independent 1985 Stayton Power Canal IdahoOregon 0.2 MW
Weeks Falls: Snoqualmie River, WA South Fork ll Associates Independent 1990 Snoqualamie River, S. Fk. Washington 4.3 MW
Wells: Columbia River, WA Douglas Co. PUD PUD 1967 Columbia River Washington 774.3 MW http://www.douglaspud.org/ Access Area, Boat Launch Area, Boat Ramp, Camping Area, Fishing Pier, Golf Course, Hunting Area, Interpretive Display, Marina, Overlook, Park, Picnic Area, Swimming Area, Tent, Trailer Sites, Trails, Visitor Center, Whitewater Boating, Wildlife Area The Wells Hydroelectric Project is owned by Public Utility District No.1 of Douglas County. Located in Azwell, WA, the Wells Project is unique in its design of combining the powerhouse, spillway, switchyard and fish facilities in a single structure rather than separate structures as used in conventional designs. This design by Bechtel Corporation of San Francisco saved the District millions of dollars and the project was completed one year ahead of schedule. The hydrocombine structure is 1165 feet in length and the dam is 4460 feet long overall. Ten generating units produce 840 megawatts of power and eleven gated spillway openings can pass a flood of over 8,800,000 gallons of water a second. Wells Dam produced its first commercial generation on August 22, 1967 with a construction cost of $202 million. In 1990, the District completed installation of modern high efficiency replacement turbine runners on all ten units. One of the original 150 ton runners can be seen on display at the dam. Utilities receiving power from Wells Dam include: Public Utility District No.1 of Douglas County, Public Utility District of Okanogan County, Puget Sound Power & Light, Portland General Electric Company, PacifiCorp, and Avista Corporation. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.00049894dde014616a8db&msa=0&ll=47.967629,-119.884529&spn=0.169186,0.349503 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
West Linn: Willamette River: OR Portland General Electric Independent Willamette River IdahoOregon 3.6 MW
West Side: Klamath River, OR PacifiCorp IOU 1908 Klamath River IdahoOregon 0.6 MW
White Ranch: Mud Creek, ID T. G. White Independent 1986 Mud Creek Idaho 0.3 MW
White Water Ranch: Stoddard Creek, ID White Water Ranch Independent 1985 Stoddard Creek Idaho 0.1 MW
Whitefish: Haskill Creek, MT City Of Whitefish Municipal 1985 Haskill Creek Montana 0.2 MW
Wilson Lake: N. Side Main Canal, ID Hazelton/Wilson Joint Venture Independent 1993 N. Side Main Canal Idaho 8.4 MW
Wisconsin-Noble: Noble Fork, MT Wisconsin Creek Ltd. Independent 1989 Noble Fork Montana 0.5 MW
Wolf Creek: Wolf Creek, OR Wolf Creek Hwy. Water Dist. Independent 1987 Wolf Creek IdahoOregon 0.1 MW
Woods Creek 1 & 2: Woods Creek, WA Snohomish Co. PUD PUD 1982 Woods Creek, E. Fk. Washington .7 MW http://www.snopud.com/
Wynoochee: Wynoochee River, WA City of AberdeenTacoma Power Municipal 1994 Wynoochee River Washington 12.8 MW http://www.mytpu.org/tacomapower/ Boat Launch Area, Boat Ramp, Camping Area, Park, Picnic Area, Playground Area, Swimming Area, Tent, Trailer Sites, Visitor Center, Wildlife Area The dam, owned by the City of Aberdeen, is located in the foothills of the Olympic Mountains in Grays Harbor County. In 1972, it was built by the Corps of Engineers to provide flood control, industrial water storage for the City of Aberdeen, and water irrigation. It also supports the river's fishery. Tacoma Power built a powerhouse one-quarter mile downstream from the dam. The powerhouse began generating electricity in 1994 and produces about 30 million kilowatt-hours of electricity each year, enough to serve 2,100 Northwest homes. It has a Russian built turbine and generator, the first dam on U.S. soil to do so. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.00049894dde014616a8db&msa=0&ll=47.385508,-123.605633&spn=0.045328,0.06875 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Y-8: N. Side Main “Y” Canal, ID N. Side Canal Co. Independent 1983 N. Side Main "Y" Canal Idaho 0.1 MW
Yale: Lewis River, WA PacifiCorp IOU 1953 Lewis River Washington 134 MW http://www.pacificorp.com/index.html Access Area, Boat Launch Area, Boat Ramp, Camping Area, Organizational, Groups, Park, Picnic Area, Tent, Trailer Sites
Yellowtail: Bighorn River, MT Bureau of Reclamation Federal 1966 Bighorn River Montana 250.0 MW http://www.usbr.gov/projects/Facility.jsp?fac_Name=Yellowtail+Dam Yellowtail is part of the Pick-Sloan Missouri Basin Program that provides irrigation water, flood control, recreation and power generation. [cetsEmbedGmap src=http://maps.google.com/maps/ms?msid=208206837126770720157.0004aecec388a1d4bca6c&msa=0&ll=45.307734,-107.957153&spn=1.506702,2.200012 width=553 height=500 marginwidth=0 marginheight=0 frameborder=0 scrolling=no]
Yelm: Nisqually River, WA City of Centralia Municipal 1930 Nisqually River Washington 12 MW http://www.cityofcentralia.com/
Youngs Creek: Youngs Creek, WA Snohomish Co. PUD PUD 2011 Youngs Creek Washington 7.5 MW http://www.snopud.com/