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  • Barkley Dam

    Barkley Dam is a concrete gravity and earthfill structure that measures 10,180 ft.  The powerplant section of the dam contains four generating units capable of producing 130,000 kilowatts.  The spillway section contains 12 tainter gates with a maximum discharge capacity of 520,000 cubic feet per second.Barkley Dam was authorized for construction in

  • Barkley Navigation Lock

    Barkley Navigation LockBarkley Lock is located 30.6 river miles from where the Cumberland River joins the Ohio River at Smithland, Kentucky.  The nearest community to the lock is Grand Rivers, Kentucky. Barkley Lock was opened to navigation traffic in July of 1964.  The lock chamber is 800-foot long and 110-foot wide.  During normal lake levels,

  • Belleville Locks and Dam

    The Huntington District is home to the Belleville Locks and Dam located on the Ohio River at mile 204. Belleville Locks sit 203.9 miles below Pittsburgh, PA, and 0.5 miles below Belleville, WV. The two navigation locks are located on the right bank (Ohio side) of the river. The upper pool maintained above the dam extends upstream for a distance of 42.2 miles to Willow Island Dam.

  • Black Rock Lock

    The Black Rock Channel extends from Buffalo Harbor to the Black Rock Lock.  It is three and one-half miles in length.  The Federal navigation channel has a minimum width of 200 feet. Pleasure craft are required to yield the right-of-way to commercial vessels due to the confined waters of the channel.

  • Bluestone Dam, Dam Safety Assurance Mega-Project

    Bluestone Dam began operations in 1949 and is located in West Virginia in Summers County approximately one and a half miles upstream of the City of Hinton. The dam is a conventional concrete gravity dam measuring nearly a 0.5 mile long and 165 feet tall. Bluestone Dam is a multi-purpose project.  To learn more about Bluestone Dam, please scroll

  • C.W. Bill Young Lock and Dam

    1 Barking Road, New Kensington, PA 15068 | (412) 828-3550

  • Cannelton Locks and Dam

    Welcome to the Cannelton Locks and Dam. The Cannelton Locks and Dam is located on the Ohio River at mile 720.7 below Pittsburgh, Pennsylvania. It is three miles upstream from Cannelton, Indiana. The navigation locks are located on the right descending bank or Indiana side of the river.

  • Captain Anthony Meldahl Locks and Dam

    Meldahl Locks and Dam are located at mile 436 of the Ohio River in Felicity. Estimated construction $74,082,900.

  • Center Hill Dam

    Center Hill Dam is one of the multipurpose projects that make up the Corps of Engineers’ system for development of the water resources of the Cumberland River Basin. This system is an important part of a larger plan of development for the Ohio and Mississippi Rivers.As a major unit in the system, Center Hill Dam and Lake function to control the

  • Cheatham Lake

    The Nashville District U.S. Army Corps of Engineers welcomes you to Cheatham Lake.  The lake provides a variety of outdoor recreational opportunities for millions of visitors each year.  Because of the temperate climate and relatively long recreation season, visitors have numerous activities from which to choose, including: fishing, hunting,

  • Cheatham Navigation Lock

    Cheatham Navigation LockCheatham Lock is located at Mile 148.6 on the Cumberland River in Cheatham County, Tennessee and is approximately 10 miles northwest of Ashland City, Tenn.  Cheatham Lock is open to pass navigation traffic 24 hours-a-day, 365 days a year. The 67-mile reservoir created by Cheatham Dam provides Nashville and middle Tennessee

  • Chicago District Locks

    The Chicago District operates three locks within our district footprint, the Chicago Lock, The Lockport Lock, and the T.J. O'Brien Lock.

  • Chicago Harbor Lock

    The Chicago Harbor Lock is located in the city of Chicago – adjacent to Navy Pier – and separates the waters of the Lake Michigan basin from the Chicago River.

  • Chickamauga Navigation Lock

    Chickamauga Lock is  located at Tennessee River mile 471 only 6.9 miles above Chattanooga, Tennessee.It is 58.9 river miles downstream of Watts Bar Lock and 46.3 miles upriver from Nickajack Lock.Lock History TVA commenced preliminary investigation for the Chickamauga project during May 1935, and the Board of Directors authorized its construction

  • Cordell Hull Dam

    Cordell Hull Lake is located on the Cumberland River in Smith, Jackson, and Clay counties of Tennessee.  The dam is located at river mile 313.5, about five miles upstream of the city of Carthage, Tenn.  The construction took place across 10 years completion in 1973.  The construction was preformed by private contractors.Rising 87 feet above the

  • Cordell Hull Lake

    The Nashville District U.S. Army Corps of Engineers welcomes you to Cordell Hull Lake.  The lake provides a variety of outdoor recreational opportunities for millions of visitors each year.  Because of the temperate climate and relatively long recreation season, visitors have numerous activities from which to choose, including: fishing, hunting,

  • Cordell Hull Navigation Lock

    Cordell Hull Navigation Lock is located near Carthage, Tenn., at river mile 313.5.Clear Chamber dimensions: 84 by 400 feetLift at normal pool levels: 59 feetMinimum lock filling time at normal head: 11 minutesGallons: 17 millionIf you are interested in locking, please call the Old Hickory Lock at (615) 847-3281.  All lockage reservations must be

  • Dale Hollow Dam

    Dale Hollow Dam is located approximately three miles east of Celina, Tennessee on the Obey River, 7.3 miles above its juncture with the Cumberland River at river mile 380.0. Dale Hollow Lake covers portions of Clay, Pickett, Overton and Fentress Counties in Tennessee and Clinton and Cumberland Counties in Kentucky. The project consists of 27,700

  • Dale Hollow Lake

    The Nashville District of the U.S. Army Corps of Engineers welcomes you to Dale Hollow Lake. Dale Hollow Dam and Lake was authorized by the Flood Control Act of 1938 and the River and Harbor Act of 1946. The project was completed for flood control in 1943. Power generating units were added in 1948, 1949, and 1953. The project was designed by the

  • Dashields Locks and Dam

    100 Dashields Lock Road, Coraopolis, PA 15108-5417 | 724-457-8430 

  • Emsworth Locks & Dams Major Rehabilitation Project

    Emsworth Locks and Dams are located on the Ohio River immediately downstream of the City of Pittsburgh. The main channel dam and locks are located at river mile 6.2 and the back channel dam is located at river mile 6.8. The project creates the navigation pool for the City of Pittsburgh. The structural components of the Emsworth Locks and Dams are the oldest of any project on the Ohio River, dating back to 1919 to 1922 and 1935 to 1938 when Emsworth Dams were constructed. The Emsworth locks, consisting of a 110’ wide by 600’ long main chamber and 56’ wide by 360’ long auxiliary chamber, are the oldest on the Ohio River System and are in need of additional maintenance work to keep them operating safely until permanent improvements are implemented.

  • Emsworth Locks and Dams

    0 Western Avenue, Pittsburgh, PA 15202-1708 | 412-766-6213 

  • Fort Loudoun Navigation Lock

    Fort Loudoun Lock is located near Lenoir City, Tennessee, some 55 miles downstream from Knoxville.It is at Tennessee River mile 602.3, some 73.4 miles upstream of Watts Bar Lock.Fort Loudoun is the uppermost dam on the Tennessee River.Lock History Fort Loudoun was the last dam built on the Tennessee River.  Construction of the dam began  July 8,

  • Green River Locks and Dams 1 and 2

    Welcome to the Green River Locks and Dam 1 and 2. The Green River Locks and Dam No. 1 is located on the Green River near Henderson, Kentucky, at mile 9.1. The Navigation locks are located on the right descending bank of the Green river. The upper pool is maintained above the dam and extends upstream for a distance of 54 miles to the Green River Locks and Dam No. 2. The Green River Locks and Dam No. 2 is located on the Green River near Calhoun, Kentucky, at mile 63.1. The Navigation locks are located on the right descending bank of the Green river. The upper pool is maintained above the dam and extends upstream for a distance of 45.4 miles to Locks and Dam No. 3, which is now inactive, near Rochester, Kentucky.

  • Greenup Locks and Dam

    The locks were open to navigation in 1962. The U.S. Army Corps of Engineers replaced a set of aging gates at the Greenup Locks and Dam in 2012 at a cost of approximately $12 million.

  • Guntersville Navigation Lock

    Guntersville Lock is located at Tennessee River mile 349, nine miles downstream from the city of Guntersville, Alabama.It is 75.3 miles downstream from Nickajack Lock and 74.1 miles above the Wheeler Locks.Lock History Construction of the auxiliary lock began in December 1935 and was put into operation in 1937  by TVA.  Work on the main lock began

  • Hannibal Locks and Dam

    P.O. Box 8, Hannibal, OH 43931-0008 | 740-483-2305 

  • History of Bluestone Dam

    History of Bluestone DamDescriptionLOCATION:Hinton vicinity on the New River, approximately 65 miles above the river's mouthSTRUCTURE:straight concrete gravity damOVERALL LENGTH:2,048 feetMAXIMUM HEIGHT:approximately 165 feet above the streambedWIDTH AT CREST:16 feetMAXIMUM BASE WIDTH:200 feetMAIN BODY OF DAM:55 concrete monolithsAMOUNT OF CONCRETE

  • J. Percy Priest Dam

    J. Percy Priest Dam was built at mile 6.8 on the Stones River, a tributary of the Cumberland.  The lake is located in north central Tennessee, encompassing portions of Davidson, Rutherford, and Wilson Counties.  Rising 130 feet above the streambed, the combination earth and concrete-gravity dam is 2,716 feet long with a hydroelectric power

  • J. Percy Priest Lake

    The U.S. Army Corps of Engineers Nashville District welcomes you to J. Percy Priest Lake.  The lake provides a variety of outdoor recreational opportunities for millions of visitors each year.  Because of the temperate climate and relatively long recreation season, visitors have numerous activities to participate in including fishing, hunting,

  • John T. Myers Locks and Dam

    Welcome to the John T. Myers Locks and Dam. The John T. Myers Locks and Dam is located on the Ohio River about 3.5 miles downstream from Uniontown, Kentucky, at mile 846.0 below Pittsburgh, Pennsylvania. The navigation locks are located on the right bank or Indiana side of the river.

  • Kentucky Lock

    Kentucky Lock is located near Gilbertsville, Kentucky, 22.4 miles from the confluence of the Tennessee and Ohio Rivers.  It is 20 miles east of Paducah, Kentucky. The 184-mile reservoir created by Kentucky Dam stretches across parts of Tennessee and Kentucky. It is the largest reservoir in the Eastern U.S. Construction on Kentucky Lock began in

  • Lake Michigan Diversion Accounting Program

    The diversion of water from the Lake Michigan watershed is of major importance to the Great Lakes states and to the Canadian province of Ontario. The states and province that border the Great Lakes have concerns with both diversions during periods of low lake levels, as well as the long term effects of diversion. To insure that the concerns of these interested parties are considered, the U. S. Army Corps of Engineers has been given the responsibility for the accounting of flow that is diverted from the Lake Michigan watershed.

  • Laurel River Dam

    Laurel River Lake is a key project in the development of the Cumberland River Basin.  The lake is located in southeastern Kentucky, encompassing portions of Laurel and Whitley Counties. In the 1960's, Congress authorized construction of a dam on the Laurel River 2.3 miles above its confluence with the Cumberland River.  The dam created a 5,600 acre

  • Lockport Lock

    Opened in 1933, Lockport Lock & Dam is 35 miles downstream of T.J O’Brien Lock & Dam. The facility is a unit of the Inland Waterway Navigation System and is one of eight such facilities between Chicago and Versailles, Illinois. The lock is 110 feet wide by 600 feet long. Maximum vertical lift is 42.0 feet; the average lift is 39 feet.

  • London Locks and Dam

    Dam Non-navigable, gated dam, top length 557'-5-1/2 . Five roller gates, spanning 100'-3'1/2' between piers. Damming height, 26'. Easements Of an estimated 203 acres in the project, approximately 8 acres fee required for the lock site, 6 acres fee for the abutment site, and flowage easements or other lesser interests over the remaining area.

  • Lower Monongahela River Project

    Locks and Dams 2, 3 and 4 on the Monongahela River in Allegheny, Washington and Westmoreland counties in southwestern Pennsylvania are the three oldest currently operating-navigation facilities on the Monongahela River. These locks experience the highest volume of commercial traffic on the entire Monongahela River Navigation System and the pools created by these facilities provide industrial and municipal water, and are popular with recreational boaters.

  • Markland Locks and Dam

    Welcome to the Markland Locks and Dam. The Markland Locks and Dam is located on the Ohio River at mile 531.5 below Pittsburgh, Pennsylvania. It is 26.5 miles upstream from Madison, Indiana and 3.5 miles downstream from Warsaw, Kentucky. The navigation locks are located on the Kentucky side of the river.

  • Marmet Locks and Dam

    The locks were opened in 1933 and the dam was completed in 1934. A project to repair and expand the Marmet Locks and Dam was completed in 2008. Marmet Locks and Dam are a key component of the transportation infrastructure linking the Kanawha Valley, an important chemical and coal producing area, to its raw materials supply and product markets.

  • Martins Fork Dam

    HistoryMartins Fork Lake is located at river mile 15.6 on the Martins Fork of the Cumberland River in the scenic mountainous terrain of Harlan County, 13 miles southeast of the town of Harlan, Kentucky.Martins Fork is fed from two primary sources, Martins Fork and Cranks Creek, which meet in the upper end of the lake.  Below the dam, Martins Fork

  • McAlpine Locks and Dam

    Welcome to the McAlpine Locks and Dam. The McAlpine Locks and Dam is located on the Ohio River 604.5 miles below Pittsburgh, Pennsylvania, at the northwestern end of Louisville, Kentucky, in the Portland neighborhood. The navigation locks are located on the Kentucky side of the river at mile 606.8. The upper pool extends approximately 75 miles to the Markland Locks and Dam.

  • Melton Hill Navigation Lock

      Melton Hill Lock is  nine miles southwest of Oak Ridge, Tenn., and 19 miles west of Knoxville.Located 23.1 miles from the confluence of the Clinch with the Tennessee River, it is the only Corps lock on the Clinch River Lock History The Tennessee State Geological Department initially studied the Tennessee River and its tributaries in 1918.  The

  • Montgomery Locks and Dam

    100 Montgomery Dam Road, Monaca, PA 15061-2221 | 724-643-8400 

  • New Cumberland Locks and Dam

    P.O. Box 159, Stratton, OH 43961-0159 | 740-537-2571 

  • New Lock at the Soo

    The Soo Locks facility, operated and maintained by the U.S. Army Corps of Engineers, Detroit District, is the district’s largest project and is located on the St. Marys River at Sault Ste. Marie, Michigan along the Canadian border. Approximately 80 million tons of commercial commodities pass through the Soo Locks every year. The New Lock at the Soo is being built in the footprint of the existing Sabin Lock, the northern most lock of the four on the Soo Locks facility, opened in 1919. The construction program, which includes improvements to the northern approach channel, is occurring in three phases of work. 

  • Newburgh Locks and Dam

    Welcome to the Newburgh Locks and Dam. The Newburgh Locks and Dam is located on the Ohio River near Newburgh, Indiana, at mile 776.1 below Pittsburgh, Pennsylvania. It is about 16 miles upstream from Evansville, Indiana. The Navigation locks are located on the right descending bank or Indiana side of the river.

  • Nickajack Navigation Lock

    Nickajack Lock is located 35 miles west of Chattanooga, Tennessee near the city of Jasper.The lock is at river mile 424.7.  It is 46.3 miles below Chickamauga Lock and 75.3 miles above Guntersville Lock.Lock History Construction began on the 600 foot-long Nickajack Auxiliary Lock  in March of 1964.  TVA completed it for operation in December 1967. 

  • Old Hickory Dam

    HistoryThe Old Hickory Lock and Dam, located on the Cumberland River at mile 216.2 in Sumner and Davidson Counties, Tennessee, and are approximately 25 miles upstream from Nashville, Tenn. The City of Hendersonville is situated on the northern shoreline of the lake and the City of Old Hickory is located on the southern side of the lake, just

  • Old Hickory Lake

    The U.S. Army Corps of Engineers Nashville District welcomes you to Old Hickory Lake.Located near Metropolitan Nashville, Tenn., the lake provides a variety of outdoor recreational opportunities for millions of visitors each year. Because of the temperate climate and relatively long recreation season, visitors have numerous activities to choose

  • Olmsted Locks and Dam

    Welcome to the Olmsted Locks and Dam. The Olmsted project consists of two 110’ x 1,200’ locks adjacent to the Illinois bank, and a dam comprised of five tainter gates, 1,400’ of boat-operated wickets and a fixed weir.

  • Pickwick Lock

    Pickwick Navigation LockPickwick Lock is approximately 12 miles south of Savannah, Tennessee.  It is just north of the Mississippi state line.Located at Tennessee  River mile 206.7, it is 52.7 miles below Wilson Lock and 184.7 miles above Kentucky Lock.Navigation in the Muscle Shoals The area called Muscle Shoals extended from Elk River to

  • Pike Island Locks and Dam

    RR #1, Box 33, Wheeling, WV 26003-9701 | 304-277-2127 

  • Racine Locks and Dam

    Two parallel locks, main lock 1200' by 110', auxiliary lock 600' by 110', miter service gates, vertical-lift emergency gates. Non-navigable, high-lift, gated dam, top length of 1,173'. Eight tainter gates, clear span 110' between 15' intermediate piers and 16' end piers, damming height 32' above sills, clearance above maximum high water when fully raised approximately 5'. The hydropower unit is completed.

  • Robert C. Byrd Locks and Dam

    Non-navigable, high-lift, gated dam, top length of gated section 1,132'. Eight roller gates, clear span 125'-6 between 16-foot piers, damming height of 29'- 6' above sills.

  • Rough River Dam Safety Modification Project

    DRAFT Rough River Dam Modification Project General Information USACE has completed an updated risk assessment which evaluated the current project risk as well as ways to reduce risk while Phase II of the Dam Safety Modification Project (construction of the cutoff wall) awaits additional funding. USACE Louisville District is implementing Interim

  • Smithland Locks and Dam

    Welcome to the Smithland Locks and Dam. Smithland Locks and Dam is located on the Ohio River at mile 918.5 below Pittsburgh, Pennsylvania and 62.5 miles upstream of the confluence of the Ohio and Mississippi rivers. The locks are on the Illinois side of the Ohio River accessible via the New Liberty Road reached from either Golconda or Brookport, Illinois.

  • Soo Locks

    The Soo Locks at Sault Ste. Marie, Michigan are among the busiest lock systems in the world. Owned, operated, and maintained by U. S. Army Corps of Engineers, Detroit District. The locks are a National Historic Landmark and is also a current Corps of Engineers Mega Project site.

  • T.J. O'Brien Lock

    The T.J. O’Brien Lock and Controlling Works is located at the entrance to Lake Michigan (River Mile 326.0), Calumet River, in Chicago, Illinois. The facility is a unit of the Inland Waterway Navigation System and is one of nine such facilities between Chicago and Versailles, Illinois.

  • Upper Ohio River Navigation Project

    The Upper Ohio Navigation Project is part of the National Economic Development (NED) plan for improving the upper Ohio River navigation system, specifically the Emsworth, Dashields and Montgomery locks and dams. Emsworth, Dashields and Montgomery, each constructed prior to 1936, are the first three locks and dams on the Ohio River downstream of the Point of Pittsburgh. These facilities have the oldest and smallest lock chambers in the entire Ohio River Navigation System. The project replaces each auxiliary lock chamber (56’ wide by 360’ long) with a new lock chamber (110’ by 600’) at each facility. This new lock chamber would serve as the new main lock chamber. The fully-funded, total project cost for all three new chambers is $2.1 billion, which would be cost-shared jointly by the General Fund (65%) and the Inland Waterways Trust Fund (35%) (2021 Cost Level). The project’s incremental benefit-to-cost ratio is 2.4 to 1 (at the current discount rate of 2.75%).

  • Watts Bar Navigation Lock

    Watts Bar Lock is near Decatur, Tennessee.  It is approximately halfway between Chattanooga and Knoxville.The lock is located at Tennessee River mile 529.9.  It is 72.4 miles downstream from Fort Loudoun Lock and 58.9 miles above Chickamauga Lock. History of Navigation in the Area  Building navigational facilities at Watts Bar was one of the

  • Wheeler Navigation Lock

    Wheeler Navigation LockThe Wheeler Locks are located about 30 miles from Decatur, Alabama. The locks are at river mile 274.9.  They are 15 miles above the Wilson Locks and 74.1 miles below Guntersville Lock. The area called Muscle Shoals extended from Elk River to Florence, Alabama and featured a series of rapids, islands, reefs, and bars.  It

  • Willow Island Locks and Dam

    AuthorityRiver and Harbor Act of 3 March 1909, Sixtieth Congress, 2nd Session.CostEstimated construction $76,520,800.DamNon-navigable, high-lift, gated dam, top length 1,128' including 111-foot fixed weir with 84-foot open crest. Eight tainter gates, clear span 110' between piers, damming height 26' above sills, clearance above maximum high water

  • Wilson Navigation Lock

    Wilson Lock is located in the northwest corner of Alabama.Located at Tennessee River mile 259.4, the lock is 15 miles below the Wheeler Locks and 52.7 miles above Pickwick Lock.It is the highest single lift lock east of the Rocky Mountains with a normal lift of between 93 and 100 feet! Lock History The original project was completed by the Corps 

  • Winfield Locks and Dam

    Dam Non-navigable, gated dam, top length 676'-9 . Six roller crest gates and one tainter gate, spanning 100'-3 1/2" between piers. Damming height 28'. Easements Of an estimated Easement Acreage of 1,243 acres for the project, approximately 315.53 acres fee required for the lock site, 15 acres fee for the abutment site, 4.33 acres for recreation site, and flowage easements or other lesser interests over the remaining area.