Kentucky Dam

Kentucky Dam
Kentucky Dam
	Kentucky Dam, with gates open Construction of the dam Construction of the dam Kentucky Dam 10-25-1939 Gilbertsville, Kentucky
Official name	Kentucky Dam
Location	Livingston County and Marshall County, Kentucky, United States
Coordinates	37°00′47″N88°16′09″W / 37.01306°N 88.26917°W Coordinates: 37°00′47″N88°16′09″W / 37.01306°N 88.26917°W
Construction began	May 1, 1938
Opening date	August 30, 1944
Operator(s)	Tennessee Valley Authority
Dam and spillways
Impounds	Tennessee River
Height	206 ft (63 m)
Length	8,422 ft (2,567 m)
Reservoir
Creates	Kentucky Lake

Last updated November 17, 2022

Kentucky Dam is a hydroelectric dam on the Tennessee River on the county line between Livingston and Marshall counties in the U.S. state of Kentucky. The dam is the lowermost of nine dams on the river owned and operated by the Tennessee Valley Authority, which built the dam in the late 1930s and early 1940s to improve navigation on the lower part of the river and reduce flooding on the lower Ohio and Mississippi rivers. It was a major project initiated during the New Deal of President Franklin D. Roosevelt's administration, to invest in infrastructure to benefit the country. The dam impounds the Kentucky Lake of 160,000 acres (65,000 ha), which is the largest of TVA's reservoirs and the largest artificial lake by area in the Eastern United States.^[1] It was designated as an National Historic Civil Engineering Landmark by the American Society of Civil Engineers in 1996 and listed on the National Register of Historic Places in 2017.^[2]

Location

Kentucky Dam is located slightly more than 22 miles (35 km) above the mouth of the Tennessee River, which empties into the Ohio River at Paducah, Kentucky. After absorbing the Tennessee, the Ohio flows for another 46 miles (74 km) before emptying into the Mississippi River at Cairo, Illinois. The dam is approximately 20 miles (32 km) north of the Kentucky-Tennessee border and 10 miles (16 km) southeast of the Kentucky-Illinois border. The city of Grand Rivers is located southeast of the dam, and Gilbertsville and Calvert City are immediately downstream. Kentucky Lake stretches southward for 184 miles (296 km) across Kentucky and most of the length of Tennessee to the base of Pickwick Landing Dam, near the Tennessee-Alabama line. It is within parts of Livingston, Marshall, Lyon, Calloway, and Trigg counties in Kentucky and parts of Humphreys, Benton, Decatur, Stewart, Carroll, Wayne, Henderson, Henry, Perry, Houston, and Hardin counties in Tennessee.

Barkley Dam, which is operated by the U.S. Army Corps of Engineers, is located along the Cumberland River just opposite Lake City a few miles east of Kentucky Dam. The canal connecting Kentucky and Barkley lakes joins Kentucky Lake approximately 3 miles (4.8 km) upstream from Kentucky Dam.

Capacity

Kentucky Dam is 206 feet (63 m) high; more than half the dam is submerged by water. At 8,422 feet (2,567 m) long, Kentucky Dam is the longest dam on the Tennessee River and the longest in the TVA system. The dam has a generating capacity of 223,100 kilowatts, and its 24-bay spillway has a total discharge of 1,050,000 cubic feet per second (30,000 m³/s). Kentucky Lake's 2,064 miles (3,322 km) of shoreline, 160,300 acres (64,900 ha) of water surface, and 4,008,000 acre-feet (4,944 Gl) of flood storage are the most of any lake in the TVA system.^[1]^[3]

Kentucky Dam is served by a 600-by-110-foot (183 by 34 m) navigation lock, soon to be supplemented by a larger 1,200-by-110-foot (366 by 34 m) lock which will be better able to accommodate the long barge tows that navigate the river in the 21st century.^[4] A large industrial complex of chemical plants has developed below the dam near Calvert City due to the convenient barge transportation and inexpensive TVA electricity. The locks' lift raises and lowers vessels up to 75 feet (23 m) between Kentucky Lake and the lower part of the river.^[1]

Background and construction

The original design plan for Kentucky Dam, circa 1938 Kentucky-dam-design-tva1.jpg — The original design plan for Kentucky Dam, circa 1938

Throughout the 19th century, Congress passed a series of initiatives to improve navigation on the Tennessee River between the river's mouth and Florence, Alabama. By the 1890s, a 5-foot (1.5 m) continuous channel had been secured, but was still deemed insufficient for major river traffic. The U.S. Army Corps of Engineers conducted an extensive survey of the lower river in the early 1900s, and recommended constructing a dam at Aurora Landing (roughly 20 miles (32 km) above the present site), but the project was never funded. In the 1930s, the Tennessee Valley Authority sought to create a continuous minimum 9-foot (2.7 m) channel along the entirety of the river from Paducah to Knoxville. The Authority also sought to help control flooding on the lower Mississippi River, especially in the aftermath of the destructive Ohio River flood of 1937. Research had shown that 4% of the water in the lower Mississippi originates in the Tennessee River watershed. TVA surveyed the lower part of the river and considered the Aurora Landing site, but eventually settled on the present site at river mile 22.4. The Kentucky Dam project was authorized by Congress on May 23, 1938, and construction began July 1, 1938.^[1]

The construction of Kentucky Dam and its reservoir required the purchase 320,244 acres (129,598 ha) of land, 48,496 acres (19,626 ha) of which had to be cleared. 2,609 families, 3,390 graves, and 365 miles (587 km) of roads had to be relocated. 65 new bridges were built, 7 were rebuilt, and 3 were razed. The Illinois Central Railroad— which crossed a bridge just downstream from the dam— was rerouted to cross the top of the dam. The communities of Johnsonville and Springville in Tennessee, and Birmingham in Kentucky were completely inundated by the project. A protective dike was constructed at Big Sandy, Tennessee to protect the town from reservoir backwaters.^[1]

Kentucky Dam was completed and its gates closed on August 30, 1944, and its first generator went online September 14, 1944. The project cost nearly $118 million, making it the most expensive TVA dam project. Kentucky Dam's navigation lock was the first lock designed by TVA— the Corps of Engineers had designed the locks for previous TVA dam projects.^[1] The Corps of Engineers is designing the new lock, which was scheduled for completion in 2008.^[4]

Since Kentucky Dam is located in the New Madrid Seismic Zone — which produced earthquakes of estimated magnitude 7.0 to 7.9 in 1811 — it is one of the few TVA dams built to withstand major earthquake shocks.^[1] Emergency preparedness officials in Marshall County and McCracken County, Kentucky (downstream from the dam) and a TVA spokesman discussed concerns of the public about the dam in 2005 in a local newspaper, The Paducah Sun . The dam was regarded as well maintained. Experts suggested that any dam failure would probably occur in the earthen levees at the end of the concrete portion of the dam, and the subsequent release would start small and enlarge as water poured through it. It is not expected that a 50-foot (15 m) wall of water would suddenly go down the river. Instead, the water level would rise slowly over at least six hours before flooding the Calvert City chemical plants. The floodwater should reach only the base of the Paducah floodwall.^[5]

The dam also carried a railroad line and two lanes of US 62/641 at its crest. However, due to the planned lock expansion, two new crossings were built just downstream of the dam—a two-lane road bridge and a separate rail bridge. The new bridges were opened in late 2009. The road atop the dam is still in use for local traffic accessing the dam's powerhouse and visitor center, but is no longer a complete crossing, as the bridges that crossed the locks are now closed.

Related Research Articles

The Tennessee River is the largest tributary of the Ohio River. It is approximately 652 miles (1,049 km) 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, as the Cherokee people had their homelands along its banks, especially in what are now East Tennessee and northern Alabama. Additionally, its tributary, the Little Tennessee River, flows into it from Western North Carolina and northeastern Georgia, where the river also was bordered by numerous Cherokee towns. Its current name is derived from the Cherokee town, Tanasi, which was located on the Tennessee side of the Appalachian Mountains.

Norris Dam is a hydroelectric and flood control structure located on the Clinch River in Anderson County and Campbell County, Tennessee, United States. The dam was the first major project for the Tennessee Valley Authority, which had been created in 1933 to bring economic development to the region and control the rampant flooding that had long plagued the Tennessee Valley. The dam was named in honor of Nebraska Senator George Norris (1861–1944), a longtime supporter of government-owned utilities in general, and supporter of TVA in particular. The infrastructure project was listed on the National Register of Historic Places in 2016.

Watts Bar Dam is a hydroelectric dam on the Tennessee River in Meigs and Rhea counties in Tennessee, United States. The dam is one of nine dams on the main Tennessee River channel operated by the Tennessee Valley Authority, which built the dam in the early 1940s to provide flood control and electricity and to help create a continuous navigable channel along the entire length of the river. The dam is the technical boundary between the 39,090-acre (15,820 ha) Watts Bar Lake— which it impounds— and Chickamauga Lake, which stretches from the dam's tailwaters southward to Chattanooga.

Fort Loudoun Dam is a hydroelectric dam on the Tennessee River in Loudon County, Tennessee, in the southeastern United States. The dam is operated by the Tennessee Valley Authority (TVA), which built the dam in the early 1940s as part of a unified plan to provide electricity and flood control in the Tennessee Valley and create a continuous 652-mile (1,049 km) navigable river channel from Knoxville, Tennessee to Paducah, Kentucky. It is the uppermost of nine TVA dams on the Tennessee River.

Melton Hill Dam is a hydroelectric dam on the Clinch River just south of Oak Ridge, Tennessee, United States. The dam is operated by the Tennessee Valley Authority, which built the dam in the early 1960s to extend the Tennessee Valley's continuous navigation channel up the Clinch as far as Clinton and to increase TVA's overall power-generating capacity. The dam impounds the 5,470-acre (2,210 ha) Melton Hill Lake, and is the only TVA tributary dam serviced by a navigation lock. The dam and associated infrastructure were listed on the National Register of Historic Places in 2017.

Guntersville Dam is a hydroelectric dam on the Tennessee River in Marshall County, in the U.S. state of Alabama. It is one of nine dams on the river owned and operated by the Tennessee Valley Authority, which built the dam in the late 1930s as part of a New Deal era initiative to create a continuous navigation channel on the entire length of the river and bring flood control and economic development to the region. The dam impounds the Guntersville Lake of 67,900 acres (27,500 ha), and its tailwaters feed into Wheeler Lake.

Wheeler Dam is a hydroelectric dam on the Tennessee River between Lauderdale County and Lawrence County in Alabama. It is one of nine dams on the river owned and operated by the Tennessee Valley Authority, which built the dam in the mid-1930s as part of a New Deal-era initiative to improve navigation on the river and bring flood control and economic development to the region. The dam impounds the Wheeler Lake of 67,070 acres (27,140 ha) and its tailwaters feed into Wilson Lake.

Pickwick Landing Dam is a hydroelectric dam on the Tennessee River in Hardin County, in the U.S. state of Tennessee. The dam is one of nine dams on the river owned and operated by the Tennessee Valley Authority, which built the dam in the 1930s as part of a New Deal-era initiative to create a continuous navigation channel between the river's mouth and Knoxville, and bring economic development to the area. The dam impounds the 43,100-acre (17,400 ha) Pickwick Lake and its tailwaters are part of Kentucky Lake.

Nickajack Dam is a hydroelectric dam in Marion County in the U.S. state of Tennessee. It is one of nine dams on the Tennessee River owned and operated by the Tennessee Valley Authority, which built the dam in the mid-1960s to replace the outdated Hales Bar Dam 6 miles (9.7 km) upstream. The dam impounds the 10,370-acre (4,200 ha) Nickajack Lake and feeds into Guntersville Lake. Nickajack Dam is named for a Cherokee village once located just upstream from the dam. The village was the namesake for Nickajack Cave, which was partially flooded by the reservoir.

The Chickamauga Dam is a hydroelectric dam on the Tennessee River in Chattanooga, Tennessee, United States. The dam is owned and operated by the Tennessee Valley Authority, which built the dam in the late 1930s as part of a New Deal era initiative to improve navigation and bring flood control and economic development to the Tennessee Valley. The dam impounds the 36,240-acre (14,670 ha) Chickamauga Lake and feeds into Nickajack Lake. The dam and associated infrastructure were listed on the National Register of Historic Places in 2017.

<span class="mw-page-title-main">Hales Bar Dam</span> United States historic place

Hales Bar Dam was a hydroelectric dam once located on the Tennessee River in Marion County, Tennessee, United States. The Chattanooga and Tennessee River Power Company began building the dam on October 17, 1905, and completed it on November 11t, 1913, making Hales Bar one of the first major multipurpose dams and one of the first major dams to be built across a navigable channel in the United States. It began operation on November 13, 1913.

Douglas Dam is a hydroelectric dam on the French Broad River in Sevier County, Tennessee, in the southeastern United States. The dam is operated by the Tennessee Valley Authority (TVA), which built the dam in record time in the early 1940s to meet emergency energy demands at the height of World War II. Douglas Dam is a straight reinforced concrete gravity-type dam 1705 feet long and 202 feet high, impounding the 28,420-acre (11,500 ha) Douglas Lake. The dam was named for Douglas Bluff, a cliff overlooking the dam site prior to construction.

<span class="mw-page-title-main">Great Falls Dam (Tennessee)</span> United States historic place

Great Falls Dam is a hydroelectric dam on the Caney Fork, straddling the county line between White County and Warren County in the U.S. state of Tennessee. It is the only dam outside the Tennessee River watershed owned and operated by the Tennessee Valley Authority. The dam impounds the 1,830-acre (740 ha) Great Falls Lake, and its tailwaters feed into Center Hill Lake. The completion of Great Falls Dam in late 1916 was an engineering triumph, marking the first successful attempt to impound the volatile and flood-prone Caney Fork. The dam is also notable for its design, utilizing a mostly underground conduit to carry water from the reservoir via a tributary to the Power House 0.75 miles (1.21 km) downstream from the dam.

Benbrook Lake is a reservoir on the Clear Fork of the Trinity River in Tarrant County, Texas, USA. The lake is located approximately 10 miles (16 km) southwest of the center of Fort Worth, where the Clear Fork and the West Fork of the Trinity River join. The lake is impounded by the Benbrook Dam. The lake and dam are owned and operated by the U.S. Army Corps of Engineers, Fort Worth District.

Watauga Dam is a hydroelectric and flood control dam on the Watauga River in Carter County, in the U.S. state of Tennessee. It is owned and operated by the Tennessee Valley Authority, which built the dam in the 1940s as part of efforts to control flooding in the Tennessee River watershed. At 318 feet (97 m), Watauga is the second-highest dam in the TVA river and reservoir system, and at the time of its completion was one of the highest earth-and-rock dams in the United States. The dam impounds the TVA Watauga Reservoir of 6,430 acres (2,600 ha), and its tailwaters feed into Wilbur Lake.

<span class="mw-page-title-main">Cherokee Dam</span> Dam in Tennessee, United States

Cherokee Dam is a hydroelectric dam located on the Holston River in Grainger County and Jefferson County, Tennessee, in the southeastern United States. The dam is operated and maintained by the Tennessee Valley Authority, which built the dam in the early 1940s to help meet urgent demands for energy at the outbreak of World War II. Cherokee Dam is 175 feet (53 m) high and impounds the 28,780-acre (11,650 ha) Cherokee Lake. It has a generating capacity of 136 megawatts. The dam was named for the Cherokee, a Native American tribe that controlled much of East Tennessee when the first European settlers arrived in the mid-18th century.

Blue Ridge Dam is a hydroelectric dam on the Toccoa River in Fannin County, in the U.S. state of Georgia. It is the uppermost of four dams on the Toccoa/Ocoee River owned and operated by the Tennessee Valley Authority. The dam impounds the 3,300-acre (1,300 ha) Blue Ridge Lake on the southwestern fringe of the Blue Ridge Mountains.

Hiwassee Dam is a hydroelectric dam on the Hiwassee River in Cherokee County, in the U.S. state of North Carolina. It is one of three dams on the river owned and operated by the Tennessee Valley Authority, which built the dam in the late 1930s to bring flood control and electricity to the region. The dam impounds the Hiwassee Lake of 6,000 acres (2,400 ha), and its tailwaters are part of Apalachia Lake. At 307 feet (94 m), Hiwassee Dam is the third highest dam in the TVA system, behind only Fontana and Watauga. The dam and associated infrastructure was listed on the National Register of Historic Places in 2017.

Boone Dam is a hydroelectric and flood control dam on the South Fork Holston River on the border between Sullivan County and Washington County in the U.S. state of Tennessee. It is one of three dams on the South Fork Holston owned and operated by the Tennessee Valley Authority, which built the dam in the early 1950s as part of greater efforts to control flooding in the Tennessee River watershed. The dam impounds the 4,500-acre (1,800 ha) Boone Lake, and its tailwaters are part of Fort Patrick Henry Lake. The dam and associated infrastructure were listed on the National Register of Historic Places in 2017.

Fort Patrick Henry Dam is a hydroelectric dam on the South Fork Holston River within the city of Kingsport, in Sullivan County in the U.S. state of Tennessee. It is the lowermost of three dams on the South Fork Holston owned and operated by the Tennessee Valley Authority, which built the dam in the early 1950s to take advantage of the hydroelectric potential created by the regulation of river flow with the completion of Watauga Dam, South Holston Dam, and Boone Dam further upstream in preceding years. The dam impounds the 872-acre (353 ha) Fort Patrick Henry Lake. While originally built for hydroelectric generation, the dam now plays an important role in the regulation of water flow and water temperature for the John Sevier Fossil Plant and other industrial plants downstream. The dam and associated infrastructure were listed on the National Register of Historic Places in 2017.

References

1 2 3 4 5 6 7 Tennessee Valley Authority, The Kentucky Project: A Comprehensive Report on the Planning, Design, Construction, and Initial Operations of the Kentucky Project, Technical Report No. 13 (Washington, D.C.: U.S. Government Printing Office, 1951), pp. 1-12, 68, 115-116, 509.
↑ "Dam To Be Dedicated As Landmark Today". The Paducah Sun. 22 July 1997. p. 6.
↑ Tennessee Valley Authority, Kentucky Reservoir. Retrieved: 20 January 2009.
1 2 U.S. Army Corps of Engineers, Kentucky Lock Project Fact Sheet Archived 2009-01-09 at the Wayback Machine . Retrieved: 20 January 2009.
↑ Bill Bartleman, "Dam Safety Attracts Public Concern", The Paducah Sun, 28 September 2005. Retrieved: 20 January 2009.

"Kentucky Dam". Geographic Names Information System . United States Geological Survey . Retrieved 2006-05-02.

External links

Kentucky Reservoir (TVA site)

This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.

[report1-1] 1 2 3 4 5 6 7 Tennessee Valley Authority, The Kentucky Project: A Comprehensive Report on the Planning, Design, Construction, and Initial Operations of the Kentucky Project, Technical Report No. 13 (Washington, D.C.: U.S. Government Printing Office, 1951), pp. 1-12, 68, 115-116, 509.

[2] "Dam To Be Dedicated As Landmark Today". The Paducah Sun. 22 July 1997. p. 6.

[web1-3] Tennessee Valley Authority, Kentucky Reservoir. Retrieved: 20 January 2009.

[lock1-4] 1 2 U.S. Army Corps of Engineers, Kentucky Lock Project Fact Sheet Archived 2009-01-09 at the Wayback Machine . Retrieved: 20 January 2009.

[Bartleman-5] Bill Bartleman, "Dam Safety Attracts Public Concern", The Paducah Sun, 28 September 2005. Retrieved: 20 January 2009.

[1]

[2]

[3]

[4]

[5]

v t e Facilities operated by the Tennessee Valley Authority
Dams and hydroelectric generating stations	Apalachia Bear Creek Beaver Creek Beech Blue Ridge Boone Cedar Cedar Creek Chatuge Cherokee Chickamauga Clear Creek Dogwood Douglas Fontana Fort Loudoun Fort Patrick Henry Great Falls Guntersville Hiwassee Kentucky Little Bear Creek Lost Creek Melton Hill Nickajack Nolichucky Normandy Norris Nottely Ocoee 1 Ocoee 2 Ocoee 3 Pickwick Landing Pin Oak Pine Raccoon Mountain Redbud South Holston Sycamore Tellico Tims Ford Upper Bear Creek Watauga Watts Bar Wheeler Wilbur Wilson
Coal-fired power plants	Allen Bull Run Colbert Cumberland Gallatin John Sevier Johnsonville Kingston Paradise Shawnee Watts Bar Widows Creek Wilson
Gas turbine plants	Allen Brownsville Caledonia Colbert Gallatin Gleason John Sevier Johnsonville Kemper Lagoon Creek Magnolia Marshall Paradise Southaven
Nuclear power plants	Browns Ferry Sequoyah Watts Bar