Graham County is a county located in the U.S. state of North Carolina. As of the 2020 census, the population was 8,030, making it the third-least populous county in North Carolina. Its county seat is Robbinsville.
The Little Tennessee River is a 135-mile (217 km) tributary of the Tennessee River that flows through the Blue Ridge Mountains from Georgia, into North Carolina, and then into Tennessee, in the southeastern United States. It drains portions of three national forests— Chattahoochee, Nantahala, and Cherokee— and provides the southwestern boundary of the Great Smoky Mountains National Park.
Old Hickory Lock and Dam is a dam located in middle Tennessee on the Cumberland River at river mile 216.2 in Sumner and Davidson Counties, approximately 25 miles (40 km) upstream from Nashville. The reservoir behind the dam is Old Hickory Lake. The dam and lake are named after President Andrew Jackson, who lived in the vicinity at The Hermitage.
Fontana Dam is a hydroelectric dam on the Little Tennessee River in Swain and Graham counties, North Carolina, United States. The dam is operated by the Tennessee Valley Authority, which built the dam in the early 1940s to satisfy the skyrocketing electricity demands in the Tennessee Valley to support the aluminum industry at the height of World War II; it also provided electricity to a formerly rural area.
Holtwood Dam is the oldest of three major dams built across the lower Susquehanna River, and the middle location of the three. It was constructed as the McCalls Ferry Dam between 1905 and 1910 by the Pennsylvania Water & Power (PW&P) Company. The dam was renamed Holtwood in honor of two company executives. PW&P merged with Pennsylvania Power & Light (PPL) in 1955. In 2015 Talen Energy took over PPL's generation and immediately sold the Holtwood plant to Brookfield Renewable Energy Partners to comply with federal antitrust requirements.
Apalachia Dam is a hydroelectric dam on the Hiwassee River in Cherokee County, in the U.S. state of North Carolina. The dam is the lowermost of three dams on the river owned and operated by the Tennessee Valley Authority, which built the dam in the early 1940s to provide emergency power for aluminum production during World War II. While the dam is in North Carolina, an 8.3-mile (13.4 km) underground conduit carries water from the dam's reservoir to the powerhouse located 12 miles (19 km) downstream across the state line in Polk County, Tennessee. The dam and associated infrastructure were listed on the National Register of Historic Places in 2017.
Calderwood Dam is a hydroelectric dam located along the Little Tennessee River in Blount and Monroe counties, in the U. S. state of Tennessee. Completed in 1930, the dam is owned and maintained by Tapoco, a subsidiary of the Aluminum Company of America (Alcoa), although the Tennessee Valley Authority controls the dam's reservoir levels from Fontana Dam further upstream. Calderwood Dam is named for Alcoa engineer Isaac Glidden Calderwood (1871–1941), who supervised much of the company's early Little Tennessee River operations.
The Cheoah Dam is a hydroelectric complex located in Graham and Swain counties, North Carolina, on the Little Tennessee River between river miles 51 and 52. The Cheoah Development consists of a dam and powerhouse, the first of several constructed by the Tallassee Power Company, a subsidiary of Aluminum Company of America, in order to generate electricity to smelt aluminum in Alcoa, Tennessee.
Chilhowee Dam is a hydroelectric dam located in Blount and Monroe counties, Tennessee, United States, between river mile 33 and 34 on the Little Tennessee River. Construction began in 1955 and was completed in 1957. The dam's reservoir covers approximately 1,734 acres (702 ha) at normal full pool and has a drainage area of 1,977 square miles (5,120 km2). The elevation of Chilhowee Reservoir is 874 feet (266 m) above mean sea level (USGS). Chilhowee's powerhouse is equipped with three Kaplan turbines that have a combined generating capacity of 48 megawatts.
The Cheoah River is a tributary of the Little Tennessee River in North Carolina in the United States.
Lake Santeetlah, part of the Tennessee River watershed, was created in 1928 when Alcoa dammed the Cheoah River as a means of generating hydroelectric power in Graham County, North Carolina. The reservoir is largely surrounded by the Cheoah District of the Nantahala National Forest. During the last decades of the twentieth century non-public lands were developed as scenic residences and vacation homes, most notably in the area now incorporated as the town of Lake Santeetlah.
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.
Ocoee Dam Number 2 is a hydroelectric dam on the Ocoee River in Polk County in the U.S. state of Tennessee. The dam impounds the Ocoee No. 2 Reservoir and is one of three dams on the Toccoa/Ocoee River owned and operated by the Tennessee Valley Authority. It was completed in 1913.
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.
Chatuge Dam is a flood control and hydroelectric dam on the Hiwassee River in Clay County, in the U.S. state of North Carolina. The dam is the uppermost of three dams on the river owned and operated by the Tennessee Valley Authority, which built the dam in the early 1940s for flood storage and to provide flow regulation at Hiwassee Dam further downstream. The dam impounds the 7,000-acre (2,800 ha) Chatuge Lake, which straddles the North Carolina-Georgia state line. While originally built solely for flood storage, a generator installed at Chatuge in the 1950s gives the dam a small hydroelectric output. The dam and associated infrastructure was listed on the National Register of Historic Places in 2017.
Wilbur Dam is a hydroelectric dam on the Watauga River in Carter County, in the U.S. state of Tennessee. It is one of two dams on the river owned and operated by the Tennessee Valley Authority. The dam impounds Wilbur Lake, which extends for about 3 miles (4.8 km) up the Watauga to the base of Watauga Dam. Wilbur Dam was completed in 1912 making it the second oldest dam in the TVA system behind Ocoee Dam No. 1. Wilbur Dam was one of the first major hydroelectric projects in Tennessee, and remains one of the oldest dams in the TVA system.
Alcoa Power Generating, Inc. is a subsidiary of Alcoa Inc., headquartered in Pittsburgh, Pennsylvania. Its three divisions were independent subsidiaries before being consolidated into Alcoa Power Generating, Inc. (APGI). These three projects have produced hydroelectric power and manage impoundments which also provide flood control; recreation, residential and business opportunities; and wildlife habitat.
Calderwood was a community once located along the Little Tennessee River in Blount County, Tennessee, United States. Established in 1912 as a base for the Aluminum Company of America's Little Tennessee Valley hydroelectric development operations, the community continued to house construction personnel and dam maintenance personnel for nearby Calderwood Dam until the 1960s. Although the community's houses were razed after its abandonment, three buildings located in the community— the Calderwood Dam service building, the Calderwood School, and a Quonset hut used as a theater— were included in a supplementary listing for Calderwood Dam on the National Register of Historic Places in 2004.
Hauser Dam is a hydroelectric straight gravity dam on the Missouri River about 14 miles (23 km) northeast of Helena, Montana, in the United States. The original dam, built between 1905 and 1907, failed in 1908 and caused severe flooding and damage downstream. A second dam was built on the site in 1908 and opened in 1911 and comprises the present structure. The current Hauser Dam is 700 feet (210 m) long and 80 feet (24 m) high. The reservoir formed by the dam, Hauser Lake, is 25 miles (40 km) long, has a surface area of 3,800 acres (1,500 ha), and has a storage capacity of 98,000 acre-feet (121,000,000 m3) of water when full.
The Upper North Fork Feather River Project is a hydroelectric scheme in the Sierra Nevada of California, within Lassen and Plumas Counties. The project consists of three dams, five power plants, and multiple conduits and tunnels in the headwaters of the North Fork Feather River, a major tributary of the Feather—Sacramento River systems. The total installed capacity is 362.3 megawatts (MW), producing an annual average of 1,171.9 gigawatt hours (GWh). The project is also contracted for the delivery of irrigation water between March 31 and October 31 of each year. The project is owned and operated by Pacific Gas and Electric Company.
