# List of dams in the Columbia River watershed

There are more than 60 dams in the Columbia River watershed in the United States and Canada. Tributaries of the Columbia River and their dammed tributaries, as well as the main stem itself, each have their own list below. The dams are listed in the order as they are found from source to terminus. Many of the dams in the Columbia River watershed were not created for the specific purposes of water storage or flood protection. Instead, the primary purpose of many of these dams is to produce hydroelectricity. As can be seen in the lists, these dams provide many tens of gigawatts of power.
Major dam construction began in the early 20th century and picked up the pace after the Columbia River Treaty in the 1960s, by the mid 1980s all the big dams were finished. Including just the dams listed below, there are 60 dams in the watershed, with 14 on the Columbia, 20 on the Snake, seven on the Kootenay, seven on the Pend Oreille / Clark, two on the Flathead, eight on the Yakima, and two on the Owyhee. Averaging a major dam every 72 miles (116 km), the rivers in the Columbia watershed combine to generate over 36,000 megawatts of power, with the majority coming on the main stem. Grand Coulee Dam is the largest producer of hydroelectric power in the United States, generating 6,809 megawatts, over one-sixth of all power in the basin.
In addition to providing ample power for the people of the Pacific Northwest, the reservoirs created by the dams have created numerous recreational opportunities, including fishing, boating, and windsurfing. Furthermore, by creating a constant flow and consistent depth along the river channel, the series of locks and dams have allowed for Lewiston, Idaho, to become the furthest inland seaport on the west coast of the United States. Despite the numerous benefits to humans that the dams have provided, a number of environmental consequences have manifested as a result of the dams, including a negative impact on salmonid populations of the basin.
The organization of the following lists begins with the Columbia River dams and is followed by dams on its tributaries (in order of length) and their respective watersheds. Additionally, the table of contents below is indented to indicate tributary status of each river.
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## Main stem Columbia River dams

Dams are listed in order from headwater (Columbia Lake, BC) to mouth (Pacific Ocean, OR/WA).
| Name | Height | Capacity (MW) | Province/State(s) | Coordinates | Year of completion | Owner | Reservoir formed |
| Mica Dam | 240 m (790 ft) | 2,805 | British Columbia | 52°04′39″N 118°33′59″W﻿ / ﻿52.07750°N 118.56639°W﻿ / 52.07750; -118.56639﻿ (Mica Dam) | 1973 | BC Hydro | Kinbasket Lake |
| Revelstoke Dam | 175 m (574 ft) | 2,480 | British Columbia | 51°02′57″N 118°11′36″W﻿ / ﻿51.04917°N 118.19333°W﻿ / 51.04917; -118.19333﻿ (Revelstoke Dam) | 1984 | BC Hydro | Revelstoke Lake |
| Keenleyside Dam | 52 m (171 ft) | 185 | British Columbia | 49°20′18″N 117°46′18″W﻿ / ﻿49.33833°N 117.77167°W﻿ / 49.33833; -117.77167﻿ (Keenleyside Dam) | 1968 | BC Hydro | Raised Arrow Lakes |
| Grand Coulee Dam | 550 ft (170 m) | 6,809 | Washington | 47°57′26″N 118°58′39″W﻿ / ﻿47.95722°N 118.97750°W﻿ / 47.95722; -118.97750﻿ (Grand Coulee Dam) | 1941 / 1974 | USBR | Franklin D. Roosevelt Lake |
| Chief Joseph Dam | 236 ft (72 m) | 2,620 | Washington | 47°59′42″N 119°38′19″W﻿ / ﻿47.99500°N 119.63861°W﻿ / 47.99500; -119.63861﻿ (Chief Joseph Dam) | 1955 | USACE | Rufus Woods Lake |
| Wells Dam | 160 ft (49 m) | 840 | Washington | 47°56′50″N 119°51′51″W﻿ / ﻿47.94722°N 119.86417°W﻿ / 47.94722; -119.86417﻿ (Wells Dam) | 1967 | Douglas PUD | Lake Pateros |
| Rocky Reach Dam | 130 ft (40 m) | 1,287 | Washington | 47°31′59″N 120°17′41″W﻿ / ﻿47.53306°N 120.29472°W﻿ / 47.53306; -120.29472﻿ (Rocky Reach Dam) | 1961 | Chelan PUD | Lake Entiat |
| Rock Island Dam | 135 ft (41 m) | 660 | Washington | 47°20′33″N 120°05′40″W﻿ / ﻿47.34250°N 120.09444°W﻿ / 47.34250; -120.09444﻿ (Rock Island Dam) | 1933 | Chelan PUD | Rock Island Pool |
| Wanapum Dam | 185 ft (56 m) | 1,092 | Washington | 46°52′40″N 119°58′13″W﻿ / ﻿46.87778°N 119.97028°W﻿ / 46.87778; -119.97028﻿ (Wanapum Dam) | 1963 | Grant PUD | Lake Wanapum |
| Priest Rapids Dam | 178 ft (54 m) | 955.6 | Washington | 46°38′39″N 119°54′36″W﻿ / ﻿46.64417°N 119.91000°W﻿ / 46.64417; -119.91000﻿ (Priest Rapids Dam) | 1961 | Grant PUD | Priest Rapids Lake |
| McNary Dam | 183 ft (56 m) | 1,133 | Washington / Oregon border | 45°56′07″N 119°17′53″W﻿ / ﻿45.93528°N 119.29806°W﻿ / 45.93528; -119.29806﻿ (McNary Dam) | 1954 | USACE | Lake Wallula |
| John Day Dam | 184 ft (56 m) | 2,485 | Washington / Oregon border | 45°42′57″N 120°41′37″W﻿ / ﻿45.71583°N 120.69361°W﻿ / 45.71583; -120.69361﻿ (John Day Dam) | 1971 | USACE | Lake Umatilla |
| The Dalles Dam | 260 ft (79 m) | 2,038 | Washington / Oregon border | 45°36′50″N 121°08′02″W﻿ / ﻿45.61389°N 121.13389°W﻿ / 45.61389; -121.13389﻿ (The Dalles Dam) | 1957 | USACE | Lake Celilo |
| Bonneville Dam | 197 ft (60 m) | 1,190 | Washington / Oregon border | 45°38′42″N 121°56′27″W﻿ / ﻿45.64500°N 121.94083°W﻿ / 45.64500; -121.94083﻿ (Bonneville Dam) | 1937 / 1981 | USACE | Lake Bonneville |

### Snake River dams

Dams are listed in order from headwater (Two Oceans Plateau, WY) to mouth Columbia River, WA.
| Name | Height | Capacity (MW) | Province/State(s) | Coordinates | Year of completion | Owner | Reservoir formed |
| Jackson Lake Dam | 65.5 ft (20.0 m) | 0 | Wyoming | 43°51′30″N 110°35′24″W﻿ / ﻿43.85833°N 110.59000°W﻿ / 43.85833; -110.59000﻿ (Jackson Lake Dam) | 1911 / 1916 / 1989 | USBR | Jackson Lake |
| Palisades Dam | 270 ft (82 m) | 176.6 | Idaho | 43°19′59″N 111°12′12″W﻿ / ﻿43.33306°N 111.20333°W﻿ / 43.33306; -111.20333﻿ (Palisades Dam) | 1957 | USBR | Palisades Reservoir |
| Gem State Dam | 40 ft (12 m) | 22.6 | Idaho | 43°25′19″N 112°06′08″W﻿ / ﻿43.42194°N 112.10222°W﻿ / 43.42194; -112.10222﻿ (Gem State Dam) | 1982 | City of Idaho Falls | |
| American Falls Dam | 104 ft (32 m) | 112.4 | Idaho | 42°46′43″N 112°52′35″W﻿ / ﻿42.77861°N 112.87639°W﻿ / 42.77861; -112.87639﻿ (American Falls Dam) | 1927 / 1978 | USBR | American Falls Reservoir |
| Minidoka Dam | 86 ft (26 m) | 28.5 | Idaho | 42°40′10″N 113°29′03″W﻿ / ﻿42.66944°N 113.48417°W﻿ / 42.66944; -113.48417﻿ (Minidoka Dam) | 1909-1942 | USBR | Lake Walcott |
| Milner Dam | 38 ft (12 m) | 59.5 | Idaho | 42°31′30″N 114°00′35″W﻿ / ﻿42.52500°N 114.00972°W﻿ / 42.52500; -114.00972﻿ (Milner Dam) | 1905 | Milner Dam, Inc. | Milner Lake |
| Twin Falls Dam | 25 ft (7.6 m) | 52.9 | Idaho | 42°35′21″N 114°21′20″W﻿ / ﻿42.58917°N 114.35556°W﻿ / 42.58917; -114.35556﻿ (Twin Falls Dam) | 1935 / 1995 | Idaho Power Company | Twin Falls Reservoir |
| Shoshone Falls Dam | 16 ft (4.9 m) | 64 | Idaho | 42°35′47″N 114°24′04″W﻿ / ﻿42.59639°N 114.40111°W﻿ / 42.59639; -114.40111﻿ (Shoshone Falls Dam) | 1907 | Idaho Power Company | Shoshone Falls Reservoir |
| Upper Salmon Falls Dam | 18 ft (5.5 m) | 34.5 | Idaho | 42°45′59″N 114°53′45″W﻿ / ﻿42.76639°N 114.89583°W﻿ / 42.76639; -114.89583﻿ (Upper Salmon Falls Dam) | 1937 / 1947 | Idaho Power Company | Upper Salmon Falls Reservoir |
| Lower Salmon Falls Dam | 38 ft (12 m) | 60 | Idaho | 42°50′30″N 114°54′54″W﻿ / ﻿42.84167°N 114.91500°W﻿ / 42.84167; -114.91500﻿ (Lower Salmon Falls Dam) | 1910 / 1949 | Idaho Power Company | Lower Salmon Falls Reservoir |
| Bliss Dam | 84 ft (26 m) | 75 | Idaho | 42°54′49″N 115°04′16″W﻿ / ﻿42.91361°N 115.07111°W﻿ / 42.91361; -115.07111﻿ (Bliss Dam) | 1950 | Idaho Power Company | Bliss Reservoir |
| C. J. Strike Dam | 115 ft (35 m) | 82.8 | Idaho | 42°56′51″N 115°58′31″W﻿ / ﻿42.94750°N 115.97528°W﻿ / 42.94750; -115.97528﻿ (C. J. Strike Dam) | 1952 | Idaho Power Company | C. J. Strike Reservoir |
| Swan Falls Dam | 107 ft (33 m) | 25 | Idaho | 43°14′35″N 116°22′46″W﻿ / ﻿43.24306°N 116.37944°W﻿ / 43.24306; -116.37944﻿ (Swan Falls Dam) | 1901 | Idaho Power Company | Swan Falls Reservoir |
| Brownlee Dam | 420 ft (130 m) | 585 | Idaho / Oregon border | 44°50′13″N 116°54′03″W﻿ / ﻿44.83694°N 116.90083°W﻿ / 44.83694; -116.90083﻿ (Brownlee Dam) | 1959 / 1980 | Idaho Power Company | Brownlee Reservoir |
| Oxbow Dam | 175 ft (53 m) | 220 | Idaho / Oregon border | 44°58′15″N 116°50′07″W﻿ / ﻿44.97083°N 116.83528°W﻿ / 44.97083; -116.83528﻿ (Oxbow Dam) | 1961 | Idaho Power Company | Oxbow Reservoir |
| Hells Canyon Dam | 330 ft (100 m) | 450 | Idaho / Oregon border | 45°14′34″N 116°42′05″W﻿ / ﻿45.24278°N 116.70139°W﻿ / 45.24278; -116.70139﻿ (Hells Canyon Dam) | 1967 | Idaho Power Company | Hells Canyon Reservoir |
| Lower Granite Dam | 181 ft (55 m) | 932 | Washington | 46°39′40″N 117°25′41″W﻿ / ﻿46.66111°N 117.42806°W﻿ / 46.66111; -117.42806﻿ (Lower Granite Dam) | 1975 / 1987 | USACE | Lower Granite Lake |
| Little Goose Dam | 253 ft (77 m) | 932 | Washington | 46°35′13″N 118°01′40″W﻿ / ﻿46.58694°N 118.02778°W﻿ / 46.58694; -118.02778﻿ (Little Goose Dam) | 1970 | USACE | Lake Bryan |
| Lower Monumental Dam | 152 ft (46 m) | 930 | Washington | 46°33′48″N 118°32′20″W﻿ / ﻿46.56333°N 118.53889°W﻿ / 46.56333; -118.53889﻿ (Lower Monumental Dam) | 1969 | USACE | Lake Herbert G. West |
| Ice Harbor Dam | 213 ft (65 m) | 693 | Washington | 46°14′58″N 118°52′47″W﻿ / ﻿46.24944°N 118.87972°W﻿ / 46.24944; -118.87972﻿ (Ice Harbor Dam) | 1961 / 1976 | USACE | Lake Sacajawea |

#### Salmon River dams
##### Little Salmon River dams

Dams are listed in order from headwater (north West Mountain, ID) to mouth (Salmon River, ID)
| Name | Height | Capacity (MW) | Province/State(s) | Coordinates | Year of completion | Owner | Reservoir formed | Image |
| Goose Lake Dam (Goose Creek) | 26 ft (7.9 m) | 0 | Idaho | 45°04′13″N 116°10′09″W﻿ / ﻿45.07028°N 116.16917°W﻿ / 45.07028; -116.16917﻿ (Goose Lake Dam) | 1924 | Ca Campbell Company | Goose Lake | |
| Brundage Dam (Brundage Creek(Goose Creek)) | 64 ft (20 m) | 0 | Idaho | 45°02′30″N 116°07′53″W﻿ / ﻿45.04167°N 116.13139°W﻿ / 45.04167; -116.13139﻿ (Brundage Dam) | 1989 | Brundage Reservoir Company | Brundage Reservoir | |

#### Owyhee River dams

Dams are listed in order from headwater (near Double Mountain, NV) to mouth (Snake River, OR/ID)
| Name | Height | Capacity (MW) | Province/State(s) | Coordinates | Year of completion | Owner | Reservoir formed |
| Wild Horse Dam | 114 ft (35 m) | 0 | Nevada | 41°41′14″N 115°50′43″W﻿ / ﻿41.68722°N 115.84528°W﻿ / 41.68722; -115.84528﻿ (Wild Horse Dam) | 1937 / 1969 | BIA | Wild Horse Reservoir |
| Antelope Reservoir Dam (Antelope Creek (Jordan Creek)) | 60 ft (18 m) | 0 | Oregon | 42°54′0″N 117°13′48″W﻿ / ﻿42.90000°N 117.23000°W﻿ / 42.90000; -117.23000﻿ (Antelope Reservoir Dam) | 1923 | Jordan Valley Irrigation District | Antelope Reservoir |
| Owyhee Dam | 417 ft (127 m) | 5,8,2 | Oregon | 43°38′31″N 117°14′33″W﻿ / ﻿43.64194°N 117.24250°W﻿ / 43.64194; -117.24250﻿ (Owyhee Dam) | 1932 | USBR | Lake Owyhee |

##### South Fork Owyhee River dams

Dams are listed in order from headwater (north Tuscarora Mountains, NV) to mouth (Owyhee River, ID)
| Name | Height | Capacity (MW) | Province/State(s) | Coordinates | Year of completion | Owner | Reservoir formed |
| Wilson Reservoir Dam (Wilson Creek) | 34 ft (10 m) | 0 | Nevada | 41°40′12″N 116°20′24″W﻿ / ﻿41.67000°N 116.34000°W﻿ / 41.67000; -116.34000﻿ (Wilson Reservoir Dam) | | Petan Company | Wilson Reservoir |
| Bull Run Dam (Bull Run Creek) | 69 ft (21 m) | 0 | Nevada | 41°38′24″N 116°09′0″W﻿ / ﻿41.64000°N 116.15000°W﻿ / 41.64000; -116.15000﻿ (Bull Run Dam) | | Petan Company | Bull Run Reservoir |
| Dry Creek Dam (Indian Creek) | 70 ft (21 m) | 0 | Nevada | 41°47′24″N 116°13′48″W﻿ / ﻿41.79000°N 116.23000°W﻿ / 41.79000; -116.23000﻿ (Dry Creek Dam) | | Petan Company | Dry Creek Reservoir |
| Rawhide Reservoir Dam (Indian Creek) | 33 ft (10 m) | 0 | Nevada | 41°42′36″N 116°20′24″W﻿ / ﻿41.71000°N 116.34000°W﻿ / 41.71000; -116.34000﻿ (Rawhide Reservoir Dam) | | Petan Company | Rawhide Reservoir |
| Sheep Creek Dam (Sheep Creek) | 29 ft (8.8 m) | 0 | Nevada | 41°51′36″N 116°16′12″W﻿ / ﻿41.86000°N 116.27000°W﻿ / 41.86000; -116.27000﻿ (Sheep Creek Dam) | 1966 | United States Bureau of Indian Affairs, Shoshone and Paiute Tribes | Sheep Creek Reservoir |
| Chimney Creek Dam (Fourmile Creek) | 20 ft (6.1 m) | 0 | Nevada | 41°42′36″N 116°32′24″W﻿ / ﻿41.71000°N 116.54000°W﻿ / 41.71000; -116.54000﻿ (Chimney Creek Dam) | | Roaring Springs Associates | Desert Ranch Reservoir |

#### Malheur River dams

Dams are listed in order from headwater (Logan Valley, OR) to mouth (Snake River, OR/ID)
| Name | Height | Capacity (MW) | Province/State(s) | Coordinates | Year of completion | Owner | Reservoir formed |
| Warm Springs Dam | 106 ft (32 m) | proposed 2.7 | Oregon | 43°35′07″N 118°12′31″W﻿ / ﻿43.58528°N 118.20861°W﻿ / 43.58528; -118.20861﻿ (Warm Springs Dam) | 1919 | United States Bureau of Reclamation | Warm Springs Reservoir |
| Agency Valley Dam (North Fork Malheur River) | 110 ft (34 m) | proposed 2.0 | Oregon | 43°54′41″N 118°09′15″W﻿ / ﻿43.91139°N 118.15417°W﻿ / 43.91139; -118.15417﻿ (Agency Valley Dam) | 1935 | United States Bureau of Reclamation | Beulah Reservoir |
| Harper Diversion Dam | 12 ft (3.7 m) | 0 | Oregon | 43°49′29″N 117°38′32″W﻿ / ﻿43.82472°N 117.64222°W﻿ / 43.82472; -117.64222﻿ (Harper Diversion) | 1930 | United States Bureau of Reclamation | Harper Diversion Pool |
| Bully Creek Dam (Bully Creek) | 121 ft (37 m) | 0 | Oregon | 44°00′55″N 117°23′48″W﻿ / ﻿44.01528°N 117.39667°W﻿ / 44.01528; -117.39667﻿ (Bully Creek Dam) | 1963 | United States Bureau of Reclamation | Bully Creek Reservoir |
| Bully Creek Diversion Dam (Bully Creek) | 4 ft (1.2 m) | 0 | Oregon | 44°00′11″N 117°23′03″W﻿ / ﻿44.00306°N 117.38417°W﻿ / 44.00306; -117.38417﻿ (Bully Creek Diversion) | 1964 | United States Bureau of Reclamation | Bully Creek Diversion Pool |
| Willow Creek Reservoir #3 Dam (Willow Creek) | 110 ft (34 m) | 0 | Oregon | 44°21′11″N 117°40′16″W﻿ / ﻿44.35306°N 117.67111°W﻿ / 44.35306; -117.67111﻿ (Willow Creek Reservoir #3 Dam) | 1944 | Orchard Water Company | Malheur Reservoir |

#### Grande Ronde River dams
##### Wallowa River dams

Dams are listed in order from headwater (near Pete's Point, Eagle Cap Wilderness, OR) to mouth (Grande Ronde River, OR)
| Name | Height | Capacity (MW) | Province/State(s) | Coordinates | Year of completion | Owner | Reservoir formed | Image |
| Wallowa Lake Dam | 40 ft (12 m) | 0 | Oregon | 45°19′48″N 117°13′12″W﻿ / ﻿45.33000°N 117.22000°W﻿ / 45.33000; -117.22000﻿ (Wallowa Lake Dam) | 1931 | Associated Ditch Companies | Raised Wallowa Lake | |

#### Powder River dams

Dams are listed in order from headwater (confluence of McCully Fork and Cracker Creek, OR) to mouth (Snake River, OR/ID)
| Name | Height | Capacity (MW) | Province/State(s) | Coordinates | Year of completion | Owner | Reservoir formed | Image |
| Mason Dam | 173 ft (53 m) | proposed 3.4 | Oregon | 44°40′12″N 117°59′24″W﻿ / ﻿44.67000°N 117.99000°W﻿ / 44.67000; -117.99000﻿ (Mason Dam) | 1968 | United States Bureau of Reclamation | Philips Lake | |
| Thief Valley Dam | 73 ft (22 m) | 0 | Oregon | 45°0′36″N 117°46′12″W﻿ / ﻿45.01000°N 117.77000°W﻿ / 45.01000; -117.77000﻿ (Thief Valley Dam) | 1932 | United States Bureau of Reclamation | Thief Valley Reservoir | |

#### Blackfoot River dams

Dams are listed in order from headwater (confluence of Diamond and Lanes Creeks, ID) to mouth (Snake River, ID)
| Name | Height | Capacity (MW) | Province/State(s) | Coordinates | Year of completion | Owner | Reservoir formed | Image |
| Blackfoot Dam | 44 ft (13 m) | 0 | Idaho | 43°0′0″N 111°42′36″W﻿ / ﻿43.00000°N 111.71000°W﻿ / 43.00000; -111.71000﻿ (Blackfoot Dam) | 1911 | United States Bureau of Indian Affairs | Blackfoot Reservoir | |

#### Henrys Fork dams

Dams are listed in order from headwater (Henrys Lake, ID) to mouth (Snake River, ID)
| Name | Height | Capacity (MW) | Province/State(s) | Coordinates | Year of completion | Owner | Reservoir formed |
| Henrys Lake Dam | 18 ft (5.5 m) | 0 | Idaho | 44°35′24″N 111°21′0″W﻿ / ﻿44.59000°N 111.35000°W﻿ / 44.59000; -111.35000﻿ (Henrys Lake Dam) | 1923 | North Fork Reservoir Company | Raised Henrys Lake |
| Island Park Dam | 94 ft (29 m) | 4.8 | Idaho | 44°25′12″N 111°23′24″W﻿ / ﻿44.42000°N 111.39000°W﻿ / 44.42000; -111.39000﻿ (Island Park Dam) | 1938 | United States Bureau of Reclamation | Island Park Reservoir |
| Buffalo River Dam (Buffalo River) | 12 ft (3.7 m) | 0.25 | Idaho | 44°24′52″N 111°23′34″W﻿ / ﻿44.41444°N 111.39278°W﻿ / 44.41444; -111.39278﻿ (Buffalo River Dam) | 1980 | Fall River Rural Electric Cooperative, Inc. | Buffalo Dam Pool |
| Ashton Dam | 56.6 ft (17.3 m) | 6.85 | Idaho | 44°04′12″N 111°29′24″W﻿ / ﻿44.07000°N 111.49000°W﻿ / 44.07000; -111.49000﻿ (Ashton Dam) | 1913 | PacifiCorp | Ashton Dam Lake |
| Chester Dam (Crosscut Diversion Dam) | 14.5 ft (4.4 m) | 3.3 | Idaho | 44°0′36″N 111°34′48″W﻿ / ﻿44.01000°N 111.58000°W﻿ / 44.01000; -111.58000﻿ (Chester Dam) | 1938 | Fremont-Madison Irrigation District | Chester Dam Pool |

##### Fall River dams

Dams are listed in order from headwater (Pitchstone Plateau, WY) to mouth (Henrys Fork, ID)
| Name | Height | Capacity (MW) | Province/State(s) | Coordinates | Year of completion | Owner | Reservoir formed | Image |
| Grassy Lake Dam (Grassy Creek) | 118 ft (36 m) | 0 | Wyoming | 44°07′48″N 110°48′36″W﻿ / ﻿44.13000°N 110.81000°W﻿ / 44.13000; -110.81000﻿ (Grassy Lake Dam) | 1939 | United States Bureau of Reclamation | Grassy Lake | |

#### Portneuf River dams

Dams are listed in order from headwater (southeast of Higham Peak, ID) to mouth (Snake River, ID)
| Name | Height | Capacity (MW) | Province/State(s) | Coordinates | Year of completion | Owner | Reservoir formed | Image |
| Portneuf Dam | 47 ft (14 m) | 0 | Idaho | 42°52′12″N 111°56′24″W﻿ / ﻿42.87000°N 111.94000°W﻿ / 42.87000; -111.94000﻿ (Portneuf Dam) | 1912 | Portneuf-Marsh Valley Canal Company | Chesterfield Reservoir | |

#### Salmon Falls Creek dams

Dams are listed in order from headwater (Jarbidge Mountains, NV) to mouth (Snake River, ID)
| Name | Height | Capacity (MW) | Province/State(s) | Coordinates | Year of completion | Owner | Reservoir formed | Image |
| Salmon Falls Dam | 217 ft (66 m) | 0 | Idaho | 42°12′36″N 114°43′48″W﻿ / ﻿42.21000°N 114.73000°W﻿ / 42.21000; -114.73000﻿ (Salmon Falls Dam) | 1911 | Salmon River Canal Company, Ltd. | Salmon Falls Creek Reservoir | |
| Cedar Creek Dam (Cedar Creek) | 84 ft (26 m) | 0 | Idaho | 42°13′12″N 114°52′12″W﻿ / ﻿42.22000°N 114.87000°W﻿ / 42.22000; -114.87000﻿ (Cedar Creek Dam) | 1920 | Cedar Mesa Reservoir And Canal Company | Cedar Creek Reservoir | |

#### Boise River dams

Dams are listed in order from headwater (confluence of North and Middle Forks Boise River, ID) to mouth (Snake River, ID/OR)
| Name | Height | Capacity (MW) | Province/State(s) | Coordinates | Year of completion | Owner | Reservoir formed |
| Arrowrock Dam | 350 ft (110 m) | 15 | Idaho | 43°36′0″N 115°55′12″W﻿ / ﻿43.60000°N 115.92000°W﻿ / 43.60000; -115.92000﻿ (Arrowrock Dam) | 1915 | United States Bureau of Reclamation | Arrowrock Reservoir |
| Lucky Peak Dam | 340 ft (100 m) | 101.25 | Idaho | 43°31′12″N 116°03′0″W﻿ / ﻿43.52000°N 116.05000°W﻿ / 43.52000; -116.05000﻿ (Lucky Peak Dam) | 1955 | United States Army Corps of Engineers | Lucky Peak Lake |
| Boise River Diversion Dam | 68 ft (21 m) | 3.3 | Idaho | 43°31′48″N 116°05′24″W﻿ / ﻿43.53000°N 116.09000°W﻿ / 43.53000; -116.09000﻿ (Boise River Diversion Dam) | 1908 | United States Bureau of Reclamation | Boise River Diversion Dam Pool |
| Barber Dam | 25 ft (7.6 m) | 4.14 | Idaho | 43°34′12″N 116°07′12″W﻿ / ﻿43.57000°N 116.12000°W﻿ / 43.57000; -116.12000﻿ (Barber Dam) | 1904 | Ada County and Fulcrum Inc. | Barber Dam Pool |

##### South Fork Boise River dams

Dams are listed in order from headwater (confluence of Ross Fork and Johnson Creek, ID) to mouth (Boise River, ID)
| Name | Height | Capacity (MW) | Province/State(s) | Coordinates | Year of completion | Owner | Reservoir formed | Image |
| Anderson Ranch Dam | 456 ft (139 m) | 40 | Idaho | 43°21′36″N 115°26′24″W﻿ / ﻿43.36000°N 115.44000°W﻿ / 43.36000; -115.44000﻿ (Anderson Ranch Dam) | 1947 | United States Bureau of Reclamation | Anderson Ranch Reservoir | |
| Little Camas Dam (Little Camas Creek) | 44 ft (13 m) | 0 | Idaho | 43°21′0″N 115°22′48″W﻿ / ﻿43.35000°N 115.38000°W﻿ / 43.35000; -115.38000﻿ (Little Camas Dam) | 1912 | Mountain Home Irrigation District | Little Camas Reservoir | |

#### Goose Creek dams

Dams are listed in order from headwater (near Monument Peak, ID) to mouth (Snake River, ID)
| Name | Height | Capacity (MW) | Province/State(s) | Coordinates | Year of completion | Owner | Reservoir formed | Image |
| Oakley Dam | 139 ft (42 m) | 0 | Idaho | 42°11′24″N 113°54′36″W﻿ / ﻿42.19000°N 113.91000°W﻿ / 42.19000; -113.91000﻿ (Oakley Dam) | 1916 | Oakley Canal Company | Lower Goose Creek Reservoir | |

#### Weiser River dams

Dams are listed in order from headwater (near Brush Mountain, ID) to mouth (Snake River, ID/OR)
| Name | Height | Capacity (MW) | Province/State(s) | Coordinates | Year of completion | Owner | Reservoir formed |
| Lost Valley Dam (Lost Creek(West Fork Weiser River)) | 52 ft (16 m) | 0 | Idaho | 44°57′23″N 116°28′02″W﻿ / ﻿44.95639°N 116.46722°W﻿ / 44.95639; -116.46722﻿ (Lost Valley Dam) | 1929 | Lost Valley Reservoir Company | Lost Valley Reservoir |
| C Ben Ross Dam (Little Weiser River) | 56 ft (17 m) | 0 | Idaho | 44°31′12″N 116°26′24″W﻿ / ﻿44.52000°N 116.44000°W﻿ / 44.52000; -116.44000﻿ (C Ben Ross Dam) | 1937 | Little Weiser River Irrigation District | Ben Ross Reservoir |
| Crane Creek Dam (Crane Creek) | 55 ft (17 m) | 0 | Idaho | 44°21′0″N 116°36′36″W﻿ / ﻿44.35000°N 116.61000°W﻿ / 44.35000; -116.61000﻿ (Crane Creek Dam) | 1912 | Crane Creek Reservoir Administration Board | Crane Creek Reservoir |
| Mann Creek Dam (Mann Creek) | 148 ft (45 m) | 0 | Idaho | 44°23′24″N 116°53′24″W﻿ / ﻿44.39000°N 116.89000°W﻿ / 44.39000; -116.89000﻿ (Mann Creek Dam) | 1967 | United States Bureau of Reclamation | Mann Creek Reservoir |

#### Burnt River dams

Dams are listed in order from headwater (confluence of North and South Fork Burnt Rivers, OR) to mouth (Snake River, OR/ID)
| Name | Height | Capacity (MW) | Province/State(s) | Coordinates | Year of completion | Owner | Reservoir formed | Image |
| Unity Dam | 82 ft (25 m) | proposed 0.8 | Oregon | 43°30′0″N 118°10′48″W﻿ / ﻿43.50000°N 118.18000°W﻿ / 43.50000; -118.18000﻿ (Unity Dam) | 1938 | United States Bureau of Reclamation | Unity Reservoir | |

#### Willow Creek dams

Dams are listed in order from headwater (Blackfoot Mountains, ID) to mouth (Snake River, ID)
| Name | Height | Capacity (MW) | Province/State(s) | Coordinates | Year of completion | Owner | Reservoir formed | Image |
| Ririe Dam | 253 ft (77 m) | 0 | Idaho | 43°34′48″N 111°44′24″W﻿ / ﻿43.58000°N 111.74000°W﻿ / 43.58000; -111.74000﻿ (Ririe Dam) | 1977 | United States Bureau of Reclamation | Ririe Reservoir | |

#### Payette River dams

Dams are listed in order from headwater (confluence of South and Middle Forks Payette River, ID) to mouth (Snake River, ID/OR)
| Name | Height | Capacity (MW) | Province/State(s) | Coordinates | Year of completion | Owner | Reservoir formed | Image |
| Black Canyon Diversion Dam | 183 ft (56 m) | 10.2 | Idaho | 43°52′48″N 116°28′48″W﻿ / ﻿43.88000°N 116.48000°W﻿ / 43.88000; -116.48000﻿ (Black Canyon Diversion Dam) | 1924 | United States Bureau of Reclamation | Black Canyon Reservoir | |

##### North Fork Payette River dams

Dams are listed in order from headwater (Squaw Meadows, ID) to mouth (Payette River, ID)
| Name | Height | Capacity (MW) | Province/State(s) | Coordinates | Year of completion | Owner | Reservoir formed |
| Upper Payette Lake Dam | 18 ft (5.5 m) | 0 | Idaho | 45°06′40″N 116°01′35″W﻿ / ﻿45.11111°N 116.02639°W﻿ / 45.11111; -116.02639﻿ (Upper Payette Lake Dam) | 1952 | Lake Reservoir Company | Upper Payette Lake |
| Granite Lake Dam (Fisher Creek) | 28 ft (8.5 m) | 0 | Idaho | 45°06′02″N 116°04′51″W﻿ / ﻿45.10056°N 116.08083°W﻿ / 45.10056; -116.08083﻿ (Granite Lake Dam) | 1963 | Lake Reservoir Company | Granite Lake |
| Payette Lake Dam | 8.2 ft (2.5 m) | 0 | Idaho | 44°54′36″N 116°06′36″W﻿ / ﻿44.91000°N 116.11000°W﻿ / 44.91000; -116.11000﻿ (Payette Lake Dam) | 1943 | Lake Reservoir Company | Raised Payette Lake |
| Little Payette Lake Dam (Lake Fork) | 15.8 ft (4.8 m) | 0 | Idaho | 44°54′0″N 116°02′24″W﻿ / ﻿44.90000°N 116.04000°W﻿ / 44.90000; -116.04000﻿ (Little Payette Lake Dam) | 1926 | Lake Fork Irrigation District | Little Payette Lake |
| Cascade Dam | 107 ft (33 m) | 12.8 | Idaho | 44°31′12″N 116°03′0″W﻿ / ﻿44.52000°N 116.05000°W﻿ / 44.52000; -116.05000﻿ (Cascade Dam) | 1948 | United States Bureau of Reclamation | Lake Cascade |
| Sage Hen Dam(Sage Hen Creek(Second Fork Squaw Creek)) | 38 ft (12 m) | 0 | Idaho | 44°19′12″N 116°11′24″W﻿ / ﻿44.32000°N 116.19000°W﻿ / 44.32000; -116.19000﻿ (Sage Hen Dam) | 1938 | Squaw Creek Irrigation Company | Sage Hen Reservoir |
| Paddock Valley Dam (Little Willow Creek) | 43 ft (13 m) | 0 | Idaho | 44°11′24″N 116°35′24″W﻿ / ﻿44.19000°N 116.59000°W﻿ / 44.19000; -116.59000﻿ (Paddock Valley Dam) | 1949 | Little Willow Irrigation District | Paddock Valley Reservoir |

##### South Fork Payette River dams

Dams are listed in order from headwater (near Vernon Lake, ID) to mouth (Payette River, ID)
| Name | Height | Capacity (MW) | Province/State(s) | Coordinates | Year of completion | Owner | Reservoir formed | Image |
| Deadwood Dam (Deadwood River) | 183 ft (56 m) | 0 | Idaho | 44°17′24″N 115°38′24″W﻿ / ﻿44.29000°N 115.64000°W﻿ / 44.29000; -115.64000﻿ (Deadwood Dam) | 1931 | United States Bureau of Reclamation | Deadwood Reservoir | |

#### Clearwater River dams
##### North Fork Clearwater River dams

Dams are listed in order from headwater (near Illinois Peak, ID/MT) to mouth (Clearwater River, ID)
| Name | Height | Capacity (MW) | Province/State(s) | Coordinates | Year of completion | Owner | Reservoir formed | Image |
| Dworshak Dam | 717 ft (219 m) | 400 | Idaho | 46°30′N 116°18′W﻿ / ﻿46.500°N 116.300°W﻿ / 46.500; -116.300﻿ (Dworshak Dam) | 1973 | Army Corps of Engineers | Dworshak Reservoir | |

#### Malad River dams

| Name | Height | Capacity (MW) | Province/State(s) | Coordinates | Year of completion | Owner | Reservoir formed | Image |
| Upper Malad River Dam | 124.1 ft (37.8 m) | 8.27 | Idaho | 42°51′55″N 114°52′09″W﻿ / ﻿42.86539°N 114.86925°W﻿ / 42.86539; -114.86925﻿ (Upper Malad Dam) | 1948 | Idaho Power Company | Malad Gorge State Park |
| Lower Malad River Dam | 152.0 ft (46.3 m) | 13.50 | Idaho | 42°51′51″N 114°53′08″W﻿ / ﻿42.86416°N 114.88566°W﻿ / 42.86416; -114.88566﻿ (Upper Malad Dam) | 1911 | Idaho Power Company | Malad Gorge State Park | |

##### Big Wood River dams

Dams are listed in order from headwater (near Galena Summit, ID) to mouth (Malad River, ID)
| Name | Height | Capacity (MW) | Province/State(s) | Coordinates | Year of completion | Owner | Reservoir formed | Image |
| Magic Dam | 128 ft (39 m) | 9 | Idaho | 43°15′0″N 114°22′12″W﻿ / ﻿43.25000°N 114.37000°W﻿ / 43.25000; -114.37000﻿ (Magic Dam) | 1910 | Magic Reservoir Hydroelectric, Inc. | Magic Reservoir | |

###### Camas Creek

Dams are listed in order from headwater (near Packer Butte, ID) to mouth (Big Wood River, ID)
| Name | Height | Capacity (MW) | Province/State(s) | Coordinates | Year of completion | Owner | Reservoir formed | Image |
| Mormon Dam (McKinney Creek) | 23 ft (7.0 m) | 0 | Idaho | 43°16′48″N 114°48′0″W﻿ / ﻿43.28000°N 114.80000°W﻿ / 43.28000; -114.80000﻿ (Mormon Dam) | 1908 | Twin Lakes Reservoir and Irrigation Company | Mormon Reservoir | |

##### Little Wood River dams

Dams are listed in order from headwater (Standhope Peak, ID) to mouth (Malad River, ID)
| Name | Height | Capacity (MW) | Province/State(s) | Coordinates | Year of completion | Owner | Reservoir formed | Image |
| Little Wood River Dam | 169 ft (52 m) | 3 | Idaho | 43°25′12″N 114°01′12″W﻿ / ﻿43.42000°N 114.02000°W﻿ / 43.42000; -114.02000﻿ (Little Wood Dam) | 1962 | United States Bureau of Reclamation | Little Wood Reservoir | |
| Fish Creek Dam (Fish Creek) | 88 ft (27 m) | 0 | Idaho | 43°25′12″N 114°49′48″W﻿ / ﻿43.42000°N 114.83000°W﻿ / 43.42000; -114.83000﻿ (Fish Creek Dam) | 1923 | Carey Valley Reservoir Company | Fish Creek Reservoir | |

### Kootenay River dams

Dams are listed in order from headwater (near Castle Mountain, Beaverfoot Range, BC) to mouth (Columbia River, BC).
| Name | Height | Capacity (MW) | Province/State(s) | Coordinates | Year of completion | Owner | Reservoir formed |
| Libby Dam | 420 ft (130 m) | 604 | Montana | 48°24′37″N 115°18′52″W﻿ / ﻿48.41028°N 115.31444°W﻿ / 48.41028; -115.31444﻿ (Libby Dam) | 1972 | USACE | Lake Koocanusa |
| Corra Linn Dam | 16 m (52 ft) | 51 | British Columbia | 49°28′04″N 117°28′02″W﻿ / ﻿49.46778°N 117.46722°W﻿ / 49.46778; -117.46722﻿ (Corra Linn Dam) | 1932 | FortisBC | raised Kootenay Lake |
| Upper Bonnington Falls Dam | 21 m (69 ft) | 53 | British Columbia | 49°27′35″N 117°29′03″W﻿ / ﻿49.45972°N 117.48417°W﻿ / 49.45972; -117.48417﻿ (Upper Bonnington Falls Dam) | 1907 | FortisBC | |
| Lower Bonnington Falls Dam | 21 m (69 ft) | 25 | British Columbia | 49°27′39″N 117°29′59″W﻿ / ﻿49.46083°N 117.49972°W﻿ / 49.46083; -117.49972﻿ (Lower Bonnington Falls Dam) | 1925 | FortisBC | |
| South Slocan Dam | 18 m (59 ft) | 57 | British Columbia | 49°27′20″N 117°31′11″W﻿ / ﻿49.45556°N 117.51972°W﻿ / 49.45556; -117.51972﻿ (South Slocan Dam) | 1928 | FortisBC | |
| Kootenay Canal Generating Station | 84 m (276 ft) | 583 | British Columbia | 49°27′10″N 117°31′02″W﻿ / ﻿49.45278°N 117.51722°W﻿ / 49.45278; -117.51722﻿ (Kootenay Canal Generating Station) | 1976 | BC Hydro | |
| Brilliant Dam | 42.6 m (140 ft) | 260 | British Columbia | 49°19′29″N 117°37′12″W﻿ / ﻿49.32472°N 117.62000°W﻿ / 49.32472; -117.62000﻿ (Brilliant Dam) | 1944 / 2007 | Columbia Power Corporation | |

#### Bull River dams

Dams are listed in order from headwater (Canadian Rockies) to mouth (Kootenay River, BC).
| Name | Height | Capacity (MW) | Province/State(s) | Coordinates | Year of completion | Owner | Reservoir formed | Image |
| Aberfeldie Dam | 90 ft (27 m) | 24 | British Columbia | 49°29′58″N 115°21′3″W﻿ / ﻿49.49944°N 115.35083°W﻿ / 49.49944; -115.35083﻿ (Aberfeldie Dam) | 1922 (rebuilt 1953) | BC Hydro | Aberfeldie Dam Pool | |

#### Elk River dams

Dams are listed in order from headwater (Upper Elk Lake) to mouth (Kootenay River, BC).
| Name | Height | Capacity (MW) | Province/State(s) | Coordinates | Year of completion | Owner | Reservoir formed | Image |
| Elko Dam | 52 ft (16 m) | 12 | British Columbia | 49°17′24″N 115°6′16″W﻿ / ﻿49.29000°N 115.10444°W﻿ / 49.29000; -115.10444﻿ (Elko Dam) | 1924 | BC Hydro | Elko Dam Pool | |

#### Duncan River dams

Dams are listed in order from headwater (near Mount Dawson) to mouth (Kootenay River, BC).
| Name | Height | Capacity (MW) | Province/State(s) | Coordinates | Year of completion | Owner | Reservoir formed | Image |
| Duncan Dam | 130 ft (40 m) | 0 | British Columbia | 50°15′0″N 116°56′47″W﻿ / ﻿50.25000°N 116.94639°W﻿ / 50.25000; -116.94639﻿ (Duncan Dam) | 1967 | BC Hydro | raised Duncan Lake | |

#### Mark Creek dams

Dams are listed in order from headwater (Purcell Mountains) to mouth (Kootenay River, BC).
| Name | Height | Capacity (MW) | Province/State(s) | Coordinates | Year of completion | Owner | Reservoir formed | Image |
| Upper Mark Creek Dam | 21.5 m (71 ft) | 0 | British Columbia | 49°42′36″N 116°2′33″W﻿ / ﻿49.71000°N 116.04250°W﻿ / 49.71000; -116.04250﻿ (Upper Mark Creek Dam) | 1994 | City of Kimberley | Mark Creek Dam Reservoir | |

### Pend Oreille River / Clark Fork River dams

Dams are listed in order from headwater of Clark Fork River (Silver Bow Creek, MT) to mouth of Pend Oreille River (Columbia River, BC).
| Name | Height | Capacity (MW) | Province/State(s) | Coordinates | Year of completion | Owner | Reservoir formed |
| Clark Fork |||||||||
| Thompson Falls Dam | 110 ft (34 m) | 94 | Montana | 47°35′28″N 115°21′03″W﻿ / ﻿47.59111°N 115.35083°W﻿ / 47.59111; -115.35083﻿ (Thompson Falls Dam) | 1915 | Northwestern Energy | Thompson Falls Reservoir |
| Noxon Rapids Dam | 260 ft (79 m) | 527 | Montana | 47°57′39″N 115°44′01″W﻿ / ﻿47.96083°N 115.73361°W﻿ / 47.96083; -115.73361﻿ (Noxon Rapids Dam) | 1959 | Avista Corp. | Noxon Reservoir |
| Cabinet Gorge Dam | 208 ft (63 m) | 255 | Idaho | 48°05′08″N 116°03′27″W﻿ / ﻿48.08556°N 116.05750°W﻿ / 48.08556; -116.05750﻿ (Cabinet Gorge Dam) | 1952 | Avista Corp. | Cabinet Gorge Reservoir |
| Pend Oreille |||||||||
| Albeni Falls Dam | 90 ft (27 m) | 42 | Idaho | 48°10′48″N 116°59′59″W﻿ / ﻿48.18000°N 116.99972°W﻿ / 48.18000; -116.99972﻿ (Albeni Falls Dam) | 1955 | USACE | Raised Lake Pend Oreille 11.5 ft (3.5 m) |
| Box Canyon Dam | 62 ft (19 m) | 90 | Washington | 48°46′49″N 117°24′46″W﻿ / ﻿48.78028°N 117.41278°W﻿ / 48.78028; -117.41278﻿ (Box Canyon Dam) | 1956 | Pend Oreille PUD | Box Canyon Reservoir |
| Boundary Dam | 340 ft (100 m) | 1,040 | Washington | 48°59′13″N 117°20′53″W﻿ / ﻿48.98694°N 117.34806°W﻿ / 48.98694; -117.34806﻿ (Boundary Dam) | 1967 | Seattle City Light | Boundary Lake |
| Seven Mile Dam | 79.2 m (260 ft) | 848 | British Columbia | 49°01′49″N 117°30′13″W﻿ / ﻿49.03028°N 117.50361°W﻿ / 49.03028; -117.50361﻿ (Seven Mile Dam) | 1979 | BC Hydro | |
| Waneta Dam | 75.9 m (249 ft) | 450 | British Columbia | 49°00′14″N 117°36′42″W﻿ / ﻿49.00389°N 117.61167°W﻿ / 49.00389; -117.61167﻿ (Waneta Dam) | 1954 | BC Hydro, Teck Resources | |
| Waneta Dam Expansion | 75.9 m (249 ft) | 335 | British Columbia | 49°00′14″N 117°36′42″W﻿ / ﻿49.00389°N 117.61167°W﻿ / 49.00389; -117.61167﻿ (Waneta Dam Expansion) | 2015 | FortisBC | |

#### Flathead River dams

Dams are listed in order from headwater (Confluence of North Fork and Middle Fork Flathead River) to mouth (Clark Fork River).
| Name | Height | Capacity (MW) | Province/State(s) | Coordinates | Year of completion | Owner | Reservoir formed | Image |
| Hungry Horse Dam | 564 ft (172 m) | 428 | Montana | 48°20′28″N 114°00′47″W﻿ / ﻿48.34111°N 114.01306°W﻿ / 48.34111; -114.01306﻿ (Hungry Horse Dam) | 1953 | USBR | Hungry Horse Reservoir | |
| Seli’š Ksanka Qlispe’ Dam (Kerr Dam) | 205 ft (62 m) | 188 | Montana | 47°40′38″N 114°14′02″W﻿ / ﻿47.67722°N 114.23389°W﻿ / 47.67722; -114.23389﻿ (Seli’š Ksanka Qlispe’ Dam) | 1938 | Energy Keepers, Inc. | Raised Flathead Lake 10 ft (3.0 m) | |

### Deschutes River dams

Dams are listed in order from headwater (Little Lava Lake, OR) to mouth (Columbia River, WA/OR).
| Name | Height | Capacity (MW) | Province/State(s) | Coordinates | Year of completion | Owner | Reservoir formed |
| Crane Prairie Dam | 36 ft (11 m) | 0 | Oregon | 43°45′18″N 121°47′6″W﻿ / ﻿43.75500°N 121.78500°W﻿ / 43.75500; -121.78500﻿ (Crane Prairie Dam) | 1940 | USBR | Crane Prairie Reservoir |
| Wickiup Dam | 100 ft (30 m) | 0 | Oregon | 43°41′43″N 121°42′14″W﻿ / ﻿43.69528°N 121.70389°W﻿ / 43.69528; -121.70389﻿ (Wickiup Dam) | 1949 | USBR | Wickiup Reservoir |
| Round Butte Dam | 440 ft (130 m) | 247.12 | Oregon | 44°36′0″N 121°16′12″W﻿ / ﻿44.60000°N 121.27000°W﻿ / 44.60000; -121.27000﻿ (Round Butte Dam) | 1964 | Portland General Electric Company, Confederated Tribes of the Warm Springs Reservation of Oregon | Lake Billy Chinook |
| Pelton Dam | 204 ft (62 m) | 100.8 | Oregon | 44°41′24″N 121°13′48″W﻿ / ﻿44.69000°N 121.23000°W﻿ / 44.69000; -121.23000﻿ (Pelton Dam) | 1957 | Portland General Electric Company, Confederated Tribes of the Warm Springs Reservation of Oregon | Lake Simtustus |
| Pelton Reregulating Dam | 88 ft (27 m) | 18.9 | Oregon | 44°43′12″N 121°14′24″W﻿ / ﻿44.72000°N 121.24000°W﻿ / 44.72000; -121.24000﻿ (Pelton Reregulating Dam) | 1958 | Portland General Electric Company, Confederated Tribes of the Warm Springs Reservation of Oregon | |

### Yakima River dams

Dams are listed in order from headwater (Keechelus Lake, WA) to mouth (Columbia River, WA).
| Name | Height | Capacity (MW) | Province/State(s) | Coordinates | Year of completion | Owner | Reservoir formed |
| Keechelus Dam | 128 ft (39 m) | 0 | Washington | 47°19′20″N 121°20′22″W﻿ / ﻿47.32222°N 121.33944°W﻿ / 47.32222; -121.33944﻿ (Keechelus Dam) | 1917 | USBR | Raised Keechelus Lake |
| Easton Diversion Dam | 66 ft (20 m) | 0 | Washington | 47°14′30″N 121°11′17″W﻿ / ﻿47.24167°N 121.18806°W﻿ / 47.24167; -121.18806﻿ (Easton Diversion Dam) | 1929 | USBR | Lake Easton |
| Unnamed Diversion Dam | | 0 | Washington | 47°03′50″N 120°39′09″W﻿ / ﻿47.06389°N 120.65250°W﻿ / 47.06389; -120.65250﻿ (Unnamed Dam) | | USBR | |
| Roza Diversion Dam | 67 ft (20 m) | 12 | Washington | 46°44′56″N 120°27′56″W﻿ / ﻿46.74889°N 120.46556°W﻿ / 46.74889; -120.46556﻿ (Roza Dam) | 1939 | USBR | |
| Wapato Dam | 19 ft (5.8 m) | 0 | Washington | 46°31′27″N 120°28′37″W﻿ / ﻿46.52417°N 120.47694°W﻿ / 46.52417; -120.47694﻿ (Wapato Dam) | | | Wapato Reservoir |
| Sunnyside Dam | 8 ft (2.4 m) | 0 | Washington | 46°29′52″N 120°26′41″W﻿ / ﻿46.49778°N 120.44472°W﻿ / 46.49778; -120.44472﻿ (Sunnyside Dam) | 1907 | Sunnyside Valley Irrigation District | |
| Prosser Dam | 9 ft (2.7 m) | 0 | Washington | 46°12′45″N 119°46′22″W﻿ / ﻿46.21250°N 119.77278°W﻿ / 46.21250; -119.77278﻿ (Prosser Dam) | 1904 | USBR | |
| Wannawish Dam | 6.6 ft (2.0 m) | 0 | Washington | 46°22′43″N 119°25′02″W﻿ / ﻿46.37861°N 119.41722°W﻿ / 46.37861; -119.41722﻿ (Horn Rapids/Wannawish Dam) | 1892 | | |

#### Cle Elum River dams

Dams are listed in order from headwaters (near Mount Daniel, WA) to mouth (Yakima River, WA).
| Name | Height | Capacity (MW) | Province/State(s) | Coordinates | Year of completion | Owner | Reservoir formed | Image |
| Cle Elum Dam | 165 ft (50 m) | 0 | Washington | 47°14′49″N 121°4′23″W﻿ / ﻿47.24694°N 121.07306°W﻿ / 47.24694; -121.07306﻿ (Cle Elum Dam) | 1933 | USBR | Raised Cle Elum Lake | |

#### Kachess River dams

Dams are listed in order from headwaters (Three Queens, WA) to mouth (Yakima River, WA).
| Name | Height | Capacity (MW) | Province/State(s) | Coordinates | Year of completion | Owner | Reservoir formed | Image |
| Kachess Dam | 115 ft (35 m) | 0 | Washington | 47°15′53″N 121°12′9″W﻿ / ﻿47.26472°N 121.20250°W﻿ / 47.26472; -121.20250﻿ (Kachess Dam) | 1912 | USBR | Raised Kachess Lake | |

#### Naches River dams
##### Bumping River dams

Dams are listed in order from headwaters (near Crag Mountain, WA) to mouth (Naches River, WA).
| Name | Height | Capacity (MW) | Province/State(s) | Coordinates | Year of completion | Owner | Reservoir formed | Image |
| Bumping Lake Dam | 60 ft (18 m) | 0 | Washington | 46°52′16″N 121°17′58″W﻿ / ﻿46.87111°N 121.29944°W﻿ / 46.87111; -121.29944﻿ (Bumping Lake Dam) | 1910 | USBR | Raised Bumping Lake | |

##### Tieton River dams

Dams are listed in order from headwaters (Goat Rocks, WA) to mouth (Naches River, WA).
| Name | Height | Capacity (MW) | Province/State(s) | Coordinates | Year of completion | Owner | Reservoir formed | Image |
| Clear Creek Dam (North Fork Tieton) | 83 ft (25 m) | 0 | Washington | 46°37′40″N 121°16′15″W﻿ / ﻿46.62778°N 121.27083°W﻿ / 46.62778; -121.27083﻿ (Clear Lake Dam) | 1915 | USBR | Clear Lake | |
| Tieton Dam | 319 ft (97 m) | 0 | Washington | 46°39′26″N 121°7′41″W﻿ / ﻿46.65722°N 121.12806°W﻿ / 46.65722; -121.12806﻿ (Tieton Dam) | 1925 | USBR | Rimrock Lake | |

### Willamette River dams

Dams are listed in order from headwaters (Confluence of Middle Fork Willamette River and Coast Fork Willamette River, OR/WA) to mouth (Columbia River, OR)
| Name | Height | Capacity (MW) | Province/State(s) | Coordinates | Year of completion | Owner | Reservoir formed | Image |
| Willamette Falls Dam | 20 ft (6.1 m) | 15.18 | Oregon | 45°21′11″N 122°37′04″W﻿ / ﻿45.35306°N 122.61778°W﻿ / 45.35306; -122.61778﻿ (Willamette Falls Dam) | 1888 | Portland General Electric | | |

#### Santiam River dams

Dams are listed in order from headwaters of each fork (North Santiam and South Santiam rivers) to their mouth at the confluence. There are no dams between the confluence and the mouth of the Santiam (Willamette River, OR).
| Name | Height | Capacity (MW) | Province/State(s) | Coordinates | Year of completion | Owner | Reservoir formed |
| North Santiam |||||||||
| Detroit Dam | 463 ft (141 m) | 100 | Oregon | 44°43′18″N 122°15′01″W﻿ / ﻿44.72167°N 122.25028°W﻿ / 44.72167; -122.25028﻿ (Detroit Dam) | 1953 | Army Corps of Engineers | Detroit Reservoir |
| Big Cliff Dam | 191 ft (58 m) | 18 | Oregon | 44°45′03″N 122°16′59″W﻿ / ﻿44.75083°N 122.28306°W﻿ / 44.75083; -122.28306﻿ (Big Cliff Dam) | 1953 | Army Corps of Engineers | Big Cliff Reservoir (reregulation for Detroit Reservoir) |
| South Santiam |||||||||
| Green Peter Dam | 327 ft (100 m) | 80 | Oregon | 44°27′00″N 122°32′57″W﻿ / ﻿44.45000°N 122.54917°W﻿ / 44.45000; -122.54917﻿ (Green Peter Dam) | 1968 | Army Corps of Engineers | Green Peter Reservoir |
| Foster Dam | 126 ft (38 m) | 20 | Oregon | 44°24′55″N 122°40′13″W﻿ / ﻿44.41528°N 122.67028°W﻿ / 44.41528; -122.67028﻿ (Foster Dam) | 1968 | Army Corps of Engineers | Foster Reservoir (reregulation for Green Peter Reservoir) |

#### Middle Fork Willamette River dams

Dams are listed in order from headwater (Timpanogas Lake, OR) to mouth (Willamette River, OR).
| Name | Height | Capacity (MW) | Province/State(s) | Coordinates | Year of completion | Owner | Reservoir formed |
| Hills Creek Dam | 304 ft (93 m) | 30 | Oregon | 43°42′33″N 122°25′26″W﻿ / ﻿43.70917°N 122.42389°W﻿ / 43.70917; -122.42389﻿ (Hills Creek Dam) | 1961 | USACE | Hills Creek Reservoir |
| Lookout Point Dam | 276 ft (84 m) | 150 | Oregon | 43°54′48″N 122°45′09″W﻿ / ﻿43.91333°N 122.75250°W﻿ / 43.91333; -122.75250﻿ (Lookout Point Dam) | 1954 | USACE | Lookout Point Lake |
| Fall Creek Dam | 180 ft (55 m) | 0 | Oregon | 43°54′49″N 122°45′25″W﻿ / ﻿43.91361°N 122.75694°W﻿ / 43.91361; -122.75694﻿ (Fall Creek Dam) | 1966 | USACE | Fall Creek Reservoir |
| Dexter Dam | 93 ft (28 m) | 15 | Oregon | 43°55′22″N 122°48′23″W﻿ / ﻿43.92278°N 122.80639°W﻿ / 43.92278; -122.80639﻿ (Dexter Dam) | 1954 | USACE | Dexter Reservoir |

#### McKenzie River dams

Dams are listed in order from headwater (Clear Lake, OR) to mouth (Willamette River, OR).
| Name | Height | Capacity (MW) | Province/State(s) | Coordinates | Year of completion | Owner | Reservoir formed |
| Carmen Diversion Dam | 17 ft (5.2 m) | 0 | Oregon | 44°20′19″N 122°00′11″W﻿ / ﻿44.33861°N 122.00306°W﻿ / 44.33861; -122.00306﻿ (Carmen Diversion Dam) | 1963 | Eugene Water & Electric Board | Carmen Reservoir |
| Trail Bridge Dam | 90 ft (27 m) | 10 | Oregon | 44°16′24″N 122°03′02″W﻿ / ﻿44.27333°N 122.05056°W﻿ / 44.27333; -122.05056﻿ (Trail Bridge Dam) | 1963 | Eugene Water & Electric Board | Trail Bridge Reservoir |
| Smith Dam (Smith River) | 250 ft (76 m) | 104.5 | Oregon | 44°0′0″N 122°06′36″W﻿ / ﻿44.00000°N 122.11000°W﻿ / 44.00000; -122.11000﻿ (Smith Dam) | 1963 | Eugene Water & Electric Board | Smith Reservoir |
| Cougar Dam (South Fork) | 425 ft (130 m) | 25 | Oregon | 44°07′44″N 122°14′30″W﻿ / ﻿44.12889°N 122.24167°W﻿ / 44.12889; -122.24167﻿ (Cougar Dam) | 1963 | Army Corps of Engineers | Cougar Reservoir |
| Blue River Dam (Blue River) | 270 ft (82 m) | 0 | Oregon | 44°10′23″N 122°19′47″W﻿ / ﻿44.17306°N 122.32972°W﻿ / 44.17306; -122.32972﻿ (Blue River Dam) | 1969 | Army Corps of Engineers | Blue River Reservoir |
| Leaburg Dam | 20 ft (6.1 m) | 15.9 | Oregon | 44°08′15″N 122°36′43″W﻿ / ﻿44.13750°N 122.61194°W﻿ / 44.13750; -122.61194﻿ (Leaburg Dam) | 1929 | Eugene Water & Electric Board | Leaburg Reservoir |
| Walterville Dam | 24 ft (7.3 m) | 9 | Oregon | 44°03′36″N 122°49′48″W﻿ / ﻿44.06000°N 122.83000°W﻿ / 44.06000; -122.83000﻿ (Walterville Dam) | 1911 | Eugene Water & Electric Board | Walterville Reservoir |

#### Coast Fork Willamette River dams

Dams are listed in order from headwater (Confluence of Big River and Garoutte Creek, OR) to mouth (Willamette River).
| Name | Height | Capacity (MW) | Province/State(s) | Coordinates | Year of completion | Owner | Reservoir formed | Image |
| Cottage Grove Dam | 95 ft (29 m) | 0 | Oregon | 43°42′58″N 123°03′03″W﻿ / ﻿43.71611°N 123.05083°W﻿ / 43.71611; -123.05083﻿ (Cottage Grove Dam) | 1942 | USACE | Cottage Grove Lake | |
| Dorena Dam (Row River) | 145 ft (44 m) | 7.51 | Oregon | 43°46′48″N 122°57′0″W﻿ / ﻿43.78000°N 122.95000°W﻿ / 43.78000; -122.95000﻿ (Dorena Dam) | 1949 | USACE | Dorena Lake | |

### Spokane River dams

Dams are listed in order from headwater (Lake Coeur d'Alene, ID) to mouth (Columbia River, WA).
| Name | Height | Capacity (MW) | Province/State(s) | Coordinates | Year of completion | Owner | Reservoir formed |
| Post Falls Dam | 64 ft (20 m) | 15 | Idaho | 47°42′31″N 116°57′13″W﻿ / ﻿47.70861°N 116.95361°W﻿ / 47.70861; -116.95361﻿ (Post Falls Hyrdoelectric Development) | 1908 | Avista | Raised Lake Coeur d'Alene |
| Upriver Dam | | 17.7 | Washington | 47°41′09″N 117°19′43″W﻿ / ﻿47.68583°N 117.32861°W﻿ / 47.68583; -117.32861﻿ (Upright Dam) | 1894 / 1933 | City of Spokane | Upriver Dam Reservoir |
| Upper Falls Dam | 35 ft (11 m) | 10 | Washington | 47°39′46″N 117°24′55″W﻿ / ﻿47.66278°N 117.41528°W﻿ / 47.66278; -117.41528﻿ (Upper Falls Dam) | 1922 | Avista | Upper Falls Reservoir |
| Monroe Street Dam | 24 ft (7.3 m) | 15 | Washington | 47°39′42″N 117°25′31″W﻿ / ﻿47.66167°N 117.42528°W﻿ / 47.66167; -117.42528﻿ (Monroe Street Dam) | 1890 | Avista | |
| Nine Mile Dam | 58 ft (18 m) | 26 | Washington | 47°46′30″N 117°32′38″W﻿ / ﻿47.77500°N 117.54389°W﻿ / 47.77500; -117.54389﻿ (Nine Mile Dam) | 1908 | Avista | Nine Mile Reservoir |
| Long Lake Dam | 213 ft (65 m) | 71 | Washington | 47°50′14″N 117°50′23″W﻿ / ﻿47.83722°N 117.83972°W﻿ / 47.83722; -117.83972﻿ (Long Lake Dam) | 1915 | Avista | Long Lake |
| Little Falls Dam | 57 ft (17 m) | 36 | Washington | 47°49′57″N 117°55′04″W﻿ / ﻿47.83250°N 117.91778°W﻿ / 47.83250; -117.91778﻿ (Little Falls Dam) | 1911 | Avista | Little Falls Pool |

### Cowlitz River dams

Dams are listed in order from headwater (confluence of the Ohanapecosh River and the Clear Fork of the Cowlitz River, WA) to mouth (Columbia River, WA)
| Name | Height | Capacity (MW) | Province/State(s) | Coordinates | Year of completion | Owner | Reservoir formed | Image= |
| Cowlitz Falls Dam | 140 ft (43 m) | 70 | Washington | 46°27′59″N 122°06′33″W﻿ / ﻿46.46639°N 122.10917°W﻿ / 46.46639; -122.10917﻿ (Cowlitz Falls Dam) | 1994 | Lewis County Public Utility District | Lake Scanewa | |
| Mossyrock Dam | 606 ft (185 m) | 300 | Washington | 46°32′04″N 122°25′29″W﻿ / ﻿46.53444°N 122.42472°W﻿ / 46.53444; -122.42472﻿ (Mossyrock Dam) | 1968 | Tacoma Public Utilities | Riffe Lake | |
| Mayfield Dam | 250 ft (76 m) | 162 | Washington | 46°30′10″N 122°35′18″W﻿ / ﻿46.50278°N 122.58833°W﻿ / 46.50278; -122.58833﻿ (Mayfield Dam) | 1963 | Tacoma Public Utilities | Lake Mayfield | Mayfield Dam |

### Lewis River dams

Dams are listed in order from headwater (Adams Glacier, Mount Adams, WA) to mouth (Columbia River, WA)
| Name | Height | Capacity (MW) | Province/State(s) | Coordinates | Year of completion | Owner | Reservoir formed |
| Swift Dam | 512 ft (156 m) | 240 | Washington | 46°04′48″N 122°12′36″W﻿ / ﻿46.08000°N 122.21000°W﻿ / 46.08000; -122.21000﻿ (Swift Dam) | 1958 | PacifiCorp | Swift Reservoir |
| Swift No. 2 Dam | 83 ft (25 m) | 70 | Washington | 46°03′46″N 122°11′52″W﻿ / ﻿46.06278°N 122.19778°W﻿ / 46.06278; -122.19778﻿ (Swift No. 2 Dam) | 1959 | Public Utility District No. 1 of Cowlitz County | |
| Yale Dam | 323 ft (98 m) | 134 | Washington | 45°58′48″N 122°20′24″W﻿ / ﻿45.98000°N 122.34000°W﻿ / 45.98000; -122.34000﻿ (Yale Dam) | 1953 | PacifiCorp | Yale Lake |
| Merwin Dam | 313 ft (95 m) | 136 | Washington | 45°59′24″N 122°28′48″W﻿ / ﻿45.99000°N 122.48000°W﻿ / 45.99000; -122.48000﻿ (Merwin Dam) | 1931 | PacifiCorp | Lake Merwin |

### Spillimacheen River dams

Dams are listed in order from headwater (Canadian Rockies) to mouth (Columbia River, BC).
| Name | Height | Capacity (MW) | Province/State(s) | Coordinates | Year of completion | Owner | Reservoir formed | Image |
| Spillimacheen Dam | 14.5 m (48 ft) | 4 | British Columbia | 50°53′56″N 116°25′28″W﻿ / ﻿50.89889°N 116.42444°W﻿ / 50.89889; -116.42444﻿ (Spillimacheen Dam) | 1955 | BC Hydro | Spillimacheen Dam Pool | |

### Wenatchee River dams

Dams are listed in order from headwater (Lake Wenatchee, WA) to mouth (Columbia River, WA)
| Name | Height | Capacity (MW) | Province/State(s) | Coordinates | Year of completion | Owner | Reservoir formed | Image |
| Tumwater Canyon Dam | 23 ft (7.0 m) | 0 | Washington | 47°36′59″N 120°43′22″W﻿ / ﻿47.61639°N 120.72278°W﻿ / 47.61639; -120.72278﻿ (Tumwater Canyon Dam) | 1909 | Chelan County Public Utility District | Lake Jolanda | |

### Chelan River dams

Dams are listed in order from headwater (Lake Chelan, WA) to mouth (Columbia River, WA)
| Name | Height | Capacity (MW) | Province/State(s) | Coordinates | Year of completion | Owner | Reservoir formed | Image |
| Lake Chelan Dam | 40 ft (12 m) | 59.2 | Washington | 47°50′04″N 120°00′45″W﻿ / ﻿47.83444°N 120.01250°W﻿ / 47.83444; -120.01250﻿ (Lake Chelan Dam) | 1892–1903 / 1927 | Chelan County Public Utility District | Raised Lake Chelan | |