# List of hydroelectric power stations in the United States

This is a list of operational hydroelectric power stations in the United States with a current nameplate capacity of at least 100 MW.
The Hoover Dam in Arizona and Nevada was the first hydroelectric power station in the United States to have a capacity of at least 1,000 MW upon completion in 1936. Since then numerous other hydroelectric power stations have surpassed the 1,000 MW threshold, most often through the expansion of existing hydroelectric facilities. All but two states of the United States are home to at least one hydroelectric power station, those without being Delaware and Mississippi.

## List of power stations

| Name | State | Coordinates | Capacity (MW) | Annual Generation (GWh) | Owner | Type |
| Bad Creek | South Carolina | 35°00′24″N 82°59′40″W﻿ / ﻿35.00667°N 82.99444°W﻿ / 35.00667; -82.99444﻿ (Bad Creek Pumped Storage) | 1,064 | | Duke Energy | Pumped-storage |
| Bath County | Virginia | 38°13′50″N 79°49′10″W﻿ / ﻿38.23056°N 79.81944°W﻿ / 38.23056; -79.81944﻿ (Bath County Pumped Storage) | 3,003 | -983 (2018) | Dominion Energy (60%) Bath County Energy (24%) Allegheny Energy (16%) | Pumped-storage |
| Bear Swamp | Massachusetts | 42°41′06″N 72°58′36″W﻿ / ﻿42.68500°N 72.97667°W﻿ / 42.68500; -72.97667﻿ (Bear Swamp Pumped Storage) | 600 | -164 (2019) | National Grid | Pumped-storage |
| Big Bend | South Dakota | 44°02′58″N 99°26′55″W﻿ / ﻿44.04947°N 99.44859°W﻿ / 44.04947; -99.44859﻿ (Big Bend Dam) | 494 | 1,193 (2018) | U.S. Army Corps of Engineers | Reservoir |
| Blenheim–Gilboa | New York | 42°27′18″N 74°27′29″W﻿ / ﻿42.45500°N 74.45806°W﻿ / 42.45500; -74.45806﻿ (Blenheim–Gilboa Pumped Storage) | 1,134 | | New York Power Authority | Pumped-storage |
| Bonneville | Oregon Washington | 45°38′39″N 121°56′26″W﻿ / ﻿45.64417°N 121.94056°W﻿ / 45.64417; -121.94056﻿ (Bonneville Dam) | 1,227 | 4,860 (2018) | U.S. Army Corps of Engineers | Run-of-the-river |
| Boundary | Washington | 48°59′14″N 117°20′51″W﻿ / ﻿48.98722°N 117.34750°W﻿ / 48.98722; -117.34750﻿ (Boundary Dam) | 1,003 | 4,004 (2018) | Seattle City Light | Reservoir |
| Brownlee | Idaho Oregon | 44°50′10″N 116°54′00″W﻿ / ﻿44.836°N 116.9°W﻿ / 44.836; -116.9﻿ (Brownlee Dam) | 585 | 2,419 (2018) | Idaho Power | Reservoir |
| Bull Shoals | Arkansas | 36°21′58″N 92°34′29″W﻿ / ﻿36.36611°N 92.57472°W﻿ / 36.36611; -92.57472﻿ (Bull Shoals Dam) | 340 | 623 (2018) | U.S. Army Corps of Engineers | Reservoir |
| Carters | Georgia | 34°36′55″N 84°40′26″W﻿ / ﻿34.6154°N 84.6739°W﻿ / 34.6154; -84.6739﻿ (Carters Dam) | 600 | | U.S. Army Corps of Engineers | Pumped-storage |
| Castaic | California | 34°35′14″N 118°39′24″W﻿ / ﻿34.58722°N 118.65667°W﻿ / 34.58722; -118.65667﻿ (Castaic Pumped Storage) | 1,500 | 232 (2018) | CDWR (50%) LADWP (50%) | Pumped-storage |
| Chief Joseph | Washington | 47°59′43″N 119°38′00″W﻿ / ﻿47.99528°N 119.63333°W﻿ / 47.99528; -119.63333﻿ (Chief Joseph Dam) | 2,620 | 12,352 (2018) | U.S. Army Corps of Engineers | Run-of-the-river |
| Comerford | New Hampshire | | 165.9 | 417 (2019) | Great River Hydro | |
| Conowingo | Maryland | 39°39′36″N 76°10′26″W﻿ / ﻿39.66000°N 76.17389°W﻿ / 39.66000; -76.17389﻿ (Conowingo Dam) | 548 | 2,788 (2018) | Exelon | Run-of-the-river |
| The Dalles | Oregon Washington | 45°36′44″N 121°08′04″W﻿ / ﻿45.61222°N 121.13444°W﻿ / 45.61222; -121.13444﻿ (The Dalles Dam) | 1,813 | 7,161 (2018) | U.S. Army Corps of Engineers | Run-of-the-river |
| Davis Dam | Arizona Nevada | 35°11′56″N 114°34′10″W﻿ / ﻿35.19889°N 114.56944°W﻿ / 35.19889; -114.56944﻿ (Davis Dam) | 255 | 1,103 (2018) | U.S. Bureau of Reclamation | Reservoir |
| Devil Canyon Project | California | 34°12′20″N 117°20′05″W﻿ / ﻿34.20556°N 117.33472°W﻿ / 34.20556; -117.33472﻿ (Devil Canyon Project) | 276.2 | 787 (2018) | CDWR | Reservoir |
| Dworshak | Idaho | 46°30′54″N 116°17′46″W﻿ / ﻿46.515°N 116.296°W﻿ / 46.515; -116.296﻿ (Dworshak Dam) | 400 | 1,598 (2018) | U.S. Army Corps of Engineers | Reservoir |
| Fontana | North Carolina | 35°27′8″N 83°48′17″W﻿ / ﻿35.45222°N 83.80472°W﻿ / 35.45222; -83.80472﻿ (Fontana Dam) | 304 | 1,151 (2018) | Tennessee Valley Authority | Reservoir |
| Fort Randall | South Dakota | 43°04′00″N 98°33′14″W﻿ / ﻿43.06672°N 98.5539°W﻿ / 43.06672; -98.5539﻿ (Fort Randall Dam) | 320 | 1,725 (2018) | U.S. Army Corps of Engineers | Reservoir |
| Garrison | North Dakota | 47°29′55″N 101°24′43″W﻿ / ﻿47.49861°N 101.41194°W﻿ / 47.49861; -101.41194﻿ (Garrison Dam) | 614 | 3,180 (2018) | U.S. Army Corps of Engineers | Reservoir |
| Glen Canyon | Arizona | 36°56′15″N 111°29′04″W﻿ / ﻿36.93750°N 111.48444°W﻿ / 36.93750; -111.48444﻿ (Glen Canyon Dam) | 1,320 | 3,959 (2018) | U.S. Bureau of Reclamation | Reservoir |
| Grand Coulee | Washington | 47°57′21″N 118°58′54″W﻿ / ﻿47.95583°N 118.98167°W﻿ / 47.95583; -118.98167﻿ (Grand Coulee Dam) | 6,809 | 21,043 (2018) | U.S. Bureau of Reclamation | Reservoir (95.4%) Pumped-storage (4.6%) |
| Great Lakes Hydro | Maine | | 138 | 723 (2019) | Great Lakes Hydro America | |
| Hartwell | Georgia | 34°21′28″N 82°49′17″W﻿ / ﻿34.35778°N 82.82139°W﻿ / 34.35778; -82.82139﻿ (Hartwell Dam) | 421 | | U.S. Army Corps of Engineers | Reservoir |
| Hells Canyon | Idaho Oregon | 45°14′41″N 116°41′54″W﻿ / ﻿45.24472°N 116.69833°W﻿ / 45.24472; -116.69833﻿ (Hells Canyon Dam) | 391.5 | 2,195 (2018) | Idaho Power Company | Reservoir |
| Helms | California | 37°02′13″N 118°57′53″W﻿ / ﻿37.03694°N 118.96472°W﻿ / 37.03694; -118.96472﻿ (Helms Pumped Storage) | 1,212 | -413 (2018) | PG&E | Pumped-storage |
| Hoover | Arizona Nevada | 36°0′56″N 114°44′16″W﻿ / ﻿36.01556°N 114.73778°W﻿ / 36.01556; -114.73778﻿ (Hoover Dam) | 2,080 | 3,542 (2018) | U.S. Bureau of Reclamation | Reservoir |
| Hungry Horse | Montana | 48°20′28″N 114°00′50″W﻿ / ﻿48.341°N 114.014°W﻿ / 48.341; -114.014﻿ (Hungry Horse Dam) | 428 | 999 (2018) | U.S. Bureau of Reclamation | Reservoir |
| Ice Harbor | Washington | 46°14′58″N 118°52′47″W﻿ / ﻿46.24958°N 118.87972°W﻿ / 46.24958; -118.87972﻿ (Ice Harbor Dam) | 603 | 1,711 (2018) | U.S. Army Corps of Engineers | Run-of-the-river |
| J. Strom Thurmond | Georgia | 33°39′39″N 82°11′59″W﻿ / ﻿33.66083°N 82.19972°W﻿ / 33.66083; -82.19972﻿ (J. Strom Thurmond Dam) | 380 | | U.S. Army Corps of Engineers | Reservoir |
| Jocassee | South Carolina | 34°0′57″N 82°55′05″W﻿ / ﻿34.01583°N 82.91806°W﻿ / 34.01583; -82.91806﻿ (Jocassee Dam) | 710 | | Duke Energy | Pumped-storage |
| John Day | Oregon Washington | 45°42′59″N 120°41′40″W﻿ / ﻿45.71639°N 120.69444°W﻿ / 45.71639; -120.69444﻿ (John Day Dam) | 2,160 | 9,193 (2018) | U.S. Army Corps of Engineers | Run-of-the-river |
| Libby | Montana | 48°24′36″N 115°18′50″W﻿ / ﻿48.41°N 115.314°W﻿ / 48.41; -115.314﻿ (Libby Dam) | 600 | 2,056 (2018) | U.S. Army Corps of Engineers | Reservoir |
| Little Goose | Washington | 46°35′15″N 118°01′34″W﻿ / ﻿46.58737°N 118.02606°W﻿ / 46.58737; -118.02606﻿ (Little Goose Dam) | 810 | 2,452 (2018) | U.S. Army Corps of Engineers | Run-of-the-river |
| Lower Granite | Washington | 46°39′38″N 117°25′41″W﻿ / ﻿46.66056°N 117.42806°W﻿ / 46.66056; -117.42806﻿ (Lower Granite Dam) | 810 | 2,467 (2018) | U.S. Army Corps of Engineers | Run-of-the-river |
| Lower Monumental | Washington | 46°33′47″N 118°32′20″W﻿ / ﻿46.563°N 118.539°W﻿ / 46.563; -118.539﻿ (Lower Monumental Dam) | 810 | 2,383 (2018) | U.S. Army Corps of Engineers | Run-of-the-river |
| Ludington | Michigan | 43°53′37″N 86°26′43″W﻿ / ﻿43.89361°N 86.44528°W﻿ / 43.89361; -86.44528﻿ (Ludington Pumped Storage) | 2,172 | -698 (2018) | Consumers Energy (51%) DTE Electric (49%) | Pumped-storage |
| McNary | Oregon Washington | 45°55′47″N 119°17′46″W﻿ / ﻿45.92972°N 119.29611°W﻿ / 45.92972; -119.29611﻿ (McNary Dam) | 986 | 69 (2018) | U.S. Army Corps of Engineers | Run-of-the-river |
| Mossyrock | Washington | 46°32′04″N 122°25′29″W﻿ / ﻿46.53444°N 122.42472°W﻿ / 46.53444; -122.42472﻿ (Mossyrock Dam) | 378.4 | 908 (2018) | Tacoma Power | Reservoir |
| Muddy Run | Pennsylvania | 39°50′49″N 76°17′29″W﻿ / ﻿39.847024°N 76.291462°W﻿ / 39.847024; -76.291462﻿ (Muddy Run Pumped Storage) | 1,072 | | Exelon | Pumped-storage |
| New Bullards Bar | California | 39°23′36″N 121°08′35″W﻿ / ﻿39.39333°N 121.14306°W﻿ / 39.39333; -121.14306﻿ (New Bullards Bar Dam) | 315 | 1,091 (2018) | Yuba County Water Agency | Reservoir |
| New Melones | California | 37°56′50″N 120°31′41″W﻿ / ﻿37.94722°N 120.52806°W﻿ / 37.94722; -120.52806﻿ (New Melones Dam) | 300 | 418 (2012) | U.S. Bureau of Reclamation | Reservoir |
| Northfield Mountain | Massachusetts | 42°36′39″N 72°28′17″W﻿ / ﻿42.61083°N 72.47139°W﻿ / 42.61083; -72.47139﻿ (Northfield Mountain) | 1,168 | -273 (2019) | FirstLight | Pumped-storage |
| Noxon Rapids | Montana | 47°57′39″N 115°44′01″W﻿ / ﻿47.96083°N 115.73361°W﻿ / 47.96083; -115.73361﻿ (Noxon Rapids Dam) | 527 | 1,841 (2018) | Avista | Reservoir |
| Oahe | South Dakota | 44°27′07″N 100°23′57″W﻿ / ﻿44.45194°N 100.39917°W﻿ / 44.45194; -100.39917﻿ (Oahe Dam) | 786 | 3,346 (2018) | U.S. Army Corps of Engineers | Reservoir |
| Oroville | California | 39°32′20″N 121°29′08″W﻿ / ﻿39.53889°N 121.48556°W﻿ / 39.53889; -121.48556﻿ (Oroville Dam) | 644 | 1,291 (2018) | CDWR | Reservoir |
| Priest Rapids | Washington | 46°38′35″N 119°54′34″W﻿ / ﻿46.64319°N 119.90949°W﻿ / 46.64319; -119.90949﻿ (Priest Rapids Dam) | 955 | 4,737 (2018) | Grant County PUD | Reservoir |
| Raccoon Mountain | Tennessee | 35°2′54″N 85°23′48″W﻿ / ﻿35.04833°N 85.39667°W﻿ / 35.04833; -85.39667﻿ (Raccoon Mountain Pumped Storage) | 1,616 | -620 (2018) | Tennessee Valley Authority | Pumped-storage |
| Richard B. Russell | Georgia South Carolina | 34°01′30″N 82°35′39″W﻿ / ﻿34.02500°N 82.59417°W﻿ / 34.02500; -82.59417﻿ (Richard B. Russell Dam) | 600 | | U.S. Army Corps of Engineers | Pumped-storage |
| Robert Moses Niagara | New York | 43°08′35″N 79°02′23″W﻿ / ﻿43.14306°N 79.03972°W﻿ / 43.14306; -79.03972﻿ (Robert Moses Niagara) | 2,675 | 16,773 (2018) | New York Power Authority | Reservoir |
| Rock Island | Washington | 47°20′32″N 120°05′41″W﻿ / ﻿47.34216°N 120.09477°W﻿ / 47.34216; -120.09477﻿ (Rock Island Dam) | 622.5 | 2,652 (2018) | Chelan County PUD | Reservoir |
| Rocky Mountain | Georgia | 34°21′20″N 85°18′14″W﻿ / ﻿34.35556°N 85.30389°W﻿ / 34.35556; -85.30389﻿ (Rocky Mountain Pumped Storage) | 1,095 | | Oglethorpe Power (75%) Georgia Power (25%) | Pumped-storage |
| Rocky Reach | Washington | 47°32′00″N 120°17′44″W﻿ / ﻿47.53333°N 120.29556°W﻿ / 47.53333; -120.29556﻿ (Rocky Reach Dam) | 1,347 | 6,287 (2018) | Chelan County PUD | Reservoir |
| Round Butte | Oregon | 44°36′11″N 121°16′40″W﻿ / ﻿44.60306°N 121.27778°W﻿ / 44.60306; -121.27778﻿ (Round Butte Dam) | 367 | 835 (2018) | Portland General Electric | Reservoir |
| Safe Harbor | Pennsylvania | 39°55′14″N 76°23′33″W﻿ / ﻿39.92056°N 76.39250°W﻿ / 39.92056; -76.39250﻿ (Safe Harbor Dam) | 422.5 | | SHWP | Reservoir |
| Salina | Oklahoma | 36°15′55″N 95°06′15″W﻿ / ﻿36.26528°N 95.10417°W﻿ / 36.26528; -95.10417﻿ (Salina Pumped Storage) | 259 | -135 (2018) | Grand River Dam Authority | Pumped-storage |
| S. C. Moore | New Hampshire | | 190.8 | 336 (2019) | Great River Hydro | |
| Seneca | Pennsylvania | 41°50′21″N 79°0′14″W﻿ / ﻿41.83917°N 79.00389°W﻿ / 41.83917; -79.00389﻿ (Seneca Pumped Storage) | 435 | | LS Power | Pumped-storage |
| Shasta | California | 40°43′07″N 122°25′08″W﻿ / ﻿40.71861°N 122.41889°W﻿ / 40.71861; -122.41889﻿ (Shasta Dam) | 714 | 1,739 (2018) | U.S. Bureau of Reclamation | Reservoir |
| Smith Mountain | Virginia | 37°02′28″N 79°32′08″W﻿ / ﻿37.04111°N 79.53556°W﻿ / 37.04111; -79.53556﻿ (Smith Mountain Dam) | 560 | | American Electric Power | Pumped-storage |
| St. Lawrence-FDR | New York | 45°00′23″N 74°47′42″W﻿ / ﻿45.00639°N 74.79500°W﻿ / 45.00639; -74.79500﻿ (St. Lawrence-FDR) | 912 | 7,640 (2018) | New York Power Authority | Reservoir |
| Taum Sauk | Missouri | 37°32′08″N 90°49′05″W﻿ / ﻿37.53556°N 90.81806°W﻿ / 37.53556; -90.81806﻿ (Taum Sauk Pumped Storage) | 450 | | Ameren Missouri | Pumped-storage |
| Wanapum | Washington | 46°52′31″N 119°58′16″W﻿ / ﻿46.875213°N 119.971004°W﻿ / 46.875213; -119.971004﻿ (Wanapum Dam) | 1,185 | 5,338 (2018) | Grant County PUD | Reservoir |
| Wells | Washington | 47°56′43″N 119°51′58″W﻿ / ﻿47.94528°N 119.86611°W﻿ / 47.94528; -119.86611﻿ (Wells Dam) | 774 | 4,439 (2018) | Douglas County PUD | Reservoir |
| Wheeler | Alabama | 34°48′25″N 87°22′55″W﻿ / ﻿34.80694°N 87.38194°W﻿ / 34.80694; -87.38194﻿ (Wheeler Dam) | 402 | 1,624 (2018) | Tennessee Valley Authority | Reservoir |
| White Rock | California | 38°45′54″N 120°47′14″W﻿ / ﻿38.76500°N 120.78722°W﻿ / 38.76500; -120.78722﻿ (White Rock) | 266.5 | 389 (2018) | SMUD | Reservoir |
| William R. Gianelli | California | 37°03′33″N 121°04′29″W﻿ / ﻿37.05917°N 121.07472°W﻿ / 37.05917; -121.07472﻿ (William R. Gianelli Generating Station) | 424 | -126 (2018) | CDWR U.S. Bureau of Reclamation | Pumped-storage |
| Wilson | Alabama | 34°48′03″N 87°37′33″W﻿ / ﻿34.80083°N 87.62583°W﻿ / 34.80083; -87.62583﻿ (Wilson Dam) | 653 | 2,923 (2018) | Tennessee Valley Authority | Reservoir |
| Wolf Creek | Kentucky | 36°52′06″N 85°08′51″W﻿ / ﻿36.8683°N 85.1475°W﻿ / 36.8683; -85.1475 | 270 | 800 | U.S. Army Corps of Engineers | Reservoir |
| Yards Creek | New Jersey | 41°0′3″N 75°1′54″W﻿ / ﻿41.00083°N 75.03167°W﻿ / 41.00083; -75.03167﻿ (Yards Creek Generating Station) | 453 | -115 (2018) | FirstEnergy PSEG | Pumped-storage |

### Under construction

This is a list of hydroelectric power stations under construction with an expected nameplate capacity of at least 100 MW.
| Name | State | Coordinates | Capacity (MW) | Annual Generation (GWh) | Owner | Type | Year | Ref |
| Gordon Butte | Montana | 46°25′07″N 110°22′20″W﻿ / ﻿46.41861°N 110.37222°W﻿ / 46.41861; -110.37222﻿ (Gordon Butte Pumped Storage) | 400 | 1,300 | Absaroka Energy | Pumped-storage | | |