The Elk River is a tributary of the

Tennessee River The Tennessee River is the largest tributary of the Ohio River. It is approximately long and is located in the southeastern United States in the Tennessee Valley. The river was once popularly known as the Cherokee River, among other names ...

in the U.S. states of

Tennessee Tennessee ( , ), officially the State of Tennessee, is a landlocked state in the Southeastern region of the United States. Tennessee is the 36th-largest by area and the 15th-most populous of the 50 states. It is bordered by Kentucky to ...

and

Alabama (We dare defend our rights) , anthem = " Alabama" , image_map = Alabama in United States.svg , seat = Montgomery , LargestCity = Huntsville , LargestCounty = Baldwin County , LargestMetro = Greater Birmingham , area_total_km2 = 135,7 ...

. The river is about long.Calculated in

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and Google Earth

Hydrography

The Elk River rises in

Grundy County, Tennessee Grundy County is a county located in the U.S. state of Tennessee. It is located in Middle Tennessee, bordering East Tennessee. As of 2021, the population was 13,622. Its county seat is Altamont. The county is named in honor of Felix Grundy. ...

, in Burroughs Cove near the community of Elkhead. It is bridged for the first time by State Route 50 near Pelham, Tennessee. At first it flows southwestward, and turns to flow more generally westward. It is then bridged by both U.S. Route 41 and

Interstate 24 Interstate 24 (I-24) is an Interstate Highway in the Midwestern and Southeastern United States. It runs diagonally from I-57, south of Marion, Illinois, to Chattanooga, Tennessee, at I-75. It travels through Illinois, Kentucky, Tennesse ...

. Shortly below this point, it forms the Coffee County – Franklin County line. It is first impounded by Elk River Dam, forming Woods Reservoir, the impoundment of which extends upstream to about the same point where the stream ceases to serve as the Coffee-Franklin County line and is entirely in Franklin County. This

reservoir A reservoir (; from French ''réservoir'' ) is an enlarged lake behind a dam. Such a dam may be either artificial, built to store fresh water or it may be a natural formation. Reservoirs can be created in a number of ways, including control ...

was built under the auspices of the

United States Army Corps of Engineers , colors = , anniversaries = 16 June (Organization Day) , battles = , battles_label = Wars , website = , commander1 = ...

, primarily to provide a large source of cooling water for the U.S. Air Force's

Arnold Engineering Development Center The Arnold Engineering Development Complex (AEDC), Arnold Engineering Development Center before July 2012, is an Air Force Materiel Command facility under the control of the Air Force Test Center (AFTC). Headquartered at Arnold Air Force Base, ...

, which has large

wind tunnel Wind tunnels are large tubes with air blowing through them which are used to replicate the interaction between air and an object flying through the air or moving along the ground. Researchers use wind tunnels to learn more about how an aircraft ...

s and other military and scientific research equipment. This area is also used as a wildlife refuge. The reservoir is bridged by State Route 127. Only a few miles below Elk River Dam is the beginning of slack water ( Tims Ford Lake) caused by the Tims Ford Dam of the

Tennessee Valley Authority The Tennessee Valley Authority (TVA) is a federally owned electric utility corporation in the United States. TVA's service area covers all of Tennessee, portions of Alabama, Mississippi, and Kentucky, and small areas of Georgia, North Carolina ...

. The slack water extends upstream to the vicinity of

Estill Springs Estill Springs is a town in Franklin County, Tennessee, Franklin County, Tennessee, United States. The population was 2,267 at the 2020 census. It is usually referred to simply as "Estill" by its inhabitants. Estill Springs is part of the Tullaho ...

. It is then bridged by

U.S. Route 41A Several special routes of U.S. Route 41 exist, including three in Wisconsin. In order from south to north they are as follows. Existing Fort Myers business loop U.S. Route 41 Business is a former segment of U.S. Route 41 in Downtown Fort Myer ...

. Backwaters of the Tims Ford project also extend into the nearby town of Winchester, county seat of Franklin County, even though the main channel of the Elk runs to its west, bridged by State Route 130. A considerable amount of leakage from the reservoir is observed along State Route 50 in the form of what appear to be large springs along the north side of that road but are in fact leaking of the reservoir waters through the porous

limestone Limestone ( calcium carbonate ) is a type of carbonate sedimentary rock which is the main source of the material lime. It is composed mostly of the minerals calcite and aragonite, which are different crystal forms of . Limestone forms wh ...

rock of the area. This phenomenon has resulted in a locally-popular source of water for livestock and other uses for which filtration and treatment of the water to be used is unnecessary. State Route 50 again crosses the Elk just below Tims Ford Dam. Shortly below the dam, the stream becomes the boundary between Franklin County and Moore County, and then subsequently between Moore County and Lincoln County. The stream begins to

meander A meander is one of a series of regular sinuous curves in the channel of a river or other watercourse. It is produced as a watercourse erodes the sediments of an outer, concave bank ( cut bank) and deposits sediments on an inner, convex ban ...

severely. It is bridged near the small community of Kelso, site of a

cave A cave or cavern is a natural void in the ground, specifically a space large enough for a human to enter. Caves often form by the weathering of rock and often extend deep underground. The word ''cave'' can refer to smaller openings such as sea ...

used as a

saltpeter Potassium nitrate is a chemical compound with the chemical formula . This alkali metal nitrate salt is also known as Indian saltpetre (large deposits of which were historically mined in India). It is an ionic salt of potassium ions K+ and nit ...

mine by Confederates during the

Civil War A civil war or intrastate war is a war between organized groups within the same state (or country). The aim of one side may be to take control of the country or a region, to achieve independence for a region, or to change government polic ...

, by U.S. Route 64. The Elk flows through Fayetteville about a mile south of the courthouse, where it is bridged by U.S. Route 231/

431 Year 431 (Roman numerals, CDXXXI) was a common year starting on Thursday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Bassus and Antiochus (or, less frequently, year 1 ...

. Until the late 1960s there was a "dry" stone masonry

bridge A bridge is a structure built to span a physical obstacle (such as a body of water, valley, road, or rail) without blocking the way underneath. It is constructed for the purpose of providing passage over the obstacle, which is usually somethi ...

(one in which the stones are held in place by the power of

gravity In physics, gravity () is a fundamental interaction which causes mutual attraction between all things with mass or energy. Gravity is, by far, the weakest of the four fundamental interactions, approximately 1038 times weaker than the str ...

forcing them against each other, not mortar) over the Elk; it was destroyed in a

flood A flood is an overflow of water ( or rarely other fluids) that submerges land that is usually dry. In the sense of "flowing water", the word may also be applied to the inflow of the tide. Floods are an area of study of the discipline hydrol ...

. Several miles west of Fayetteville, it is crossed by State Route 274, a highway built on an old

railroad Rail transport (also known as train transport) is a means of transport that transfers passengers and goods on wheeled vehicles running on rails, which are incorporated in tracks. In contrast to road transport, where the vehicles run on a pre ...

bed. It then crosses into Giles County, where it is bridged by

CSX Transportation CSX Transportation , known colloquially as simply CSX, is a Class I freight railroad operating in the Eastern United States and the Canadian provinces of Ontario and Quebec. The railroad operates approximately 21,000 route miles () of track. ...

and

Interstate 65 Interstate 65 (I-65) is a major north–south Interstate Highway in the central United States. As with most primary Interstates ending in 5, it is a major crosscountry, north–south route, connecting between the Great Lakes and the Gu ...

before flowing just south of Elkton, Tennessee, where it is bridged by

U.S. Route 31 U.S. Route 31 or U.S. Highway 31 (US 31) is a major north–south U.S. highway connecting southern Alabama to northern Michigan. Its southern terminus is at an intersection with US 90/ US 98 in Spanish Fort, Alabama. It ...

. A few miles below this point it crosses into Limestone County, Alabama, where it meets the

. There are actually two Elk Rivers in Tennessee, the smaller of which is located in northeast Tennessee. This Elk River flows from the back side of Beech Mountain, North Carolina through Carter County, Tennessee and empties into Watauga Lake. Watauga Lake

Recreation

In Limestone County, Alabama there is a Canoe and Kayak Trail. The trail begins at the Alabama-Tennessee state line and goes to Elk River Mills. Outside of

Winchester, TN Winchester is a city in and the county seat of Franklin County, Tennessee, United States. It is part of the Tullahoma, Tennessee Micropolitan Statistical Area. The population of Winchester as of the 2020 census was 9,375. History Winchester was ...

Tims Ford Lake was created by damming the Elk River which allows for boating and water based activities.

References

{{authority control Rivers of Alabama Rivers of Tennessee Rivers of Franklin County, Tennessee Rivers of Grundy County, Tennessee Rivers of Coffee County, Tennessee Rivers of Moore County, Tennessee Rivers of Lincoln County, Tennessee Rivers of Giles County, Tennessee Rivers of Limestone County, Alabama

Hydrography

Recreation

See also

References