Question: Hiwassee Dam is the third highest dam in the TVA system, behind the hydroelectric dam in what two North Carolina counties as the highest?

full_context: Document 1: Fort Loudoun Dam: 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 mi navigable river channel from Knoxville, Tennessee to Paducah, Kentucky. It is the uppermost of nine TVA dams on the Tennessee River. The dam impounds the 14600 acre Fort Loudoun Lake and its tailwaters are part of Watts Bar Lake. The generating capacity of Fort Loudoun Dam is enhanced by the Tellico Reservoir, from which water is diverted via canal to Fort Loudoun Lake.
Document 2: Fontana Lake: Fontana Lake is a reservoir impounded by Fontana Dam on the Little Tennessee River located in Graham and Swain counties in North Carolina. The lake forms part of the southern border of Great Smoky Mountains National Park and the northern border of part of the Nantahala National Forest. Depending on water levels, the lake is about 17 mi long. The eastern end is the Tuckasegee River near Bryson City. It has an average depth of 135 ft and reaches a maximum depth of 440 ft , making it the deepest lake in North Carolina. The lake has many inlets into coves and many islands formed from former mountain peaks, especially near the eastern end. As with most dam-impounded lakes, the steep banks are exposed when water levels are low. Many towns were submerged shortly after the creation of Fontana Lake, such as Proctor and Judson.
Document 3: Apalachia Dam: 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 mi underground conduit carries water from the dam's reservoir to the powerhouse located 12 mi downstream across the state line in Polk County, Tennessee.
Document 4: Chatuge Dam: 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 7000 acre 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.
Document 5: Fontana Dam, North Carolina: Fontana Dam (also known as Fontana Village) is a town in Graham County, North Carolina, United States. Fontana Dam is located on North Carolina Highway 28 near the Fontana Dam and the Little Tennessee River. The town incorporated in 2011 and has a full-time population of 33.
Document 6: Kentucky Dam: 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 160000 acre , which is the largest of TVA's reservoirs and the largest artificial lake by area in the Eastern United States.
Document 7: Wilbur Dam: 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 mi up the Watauga to the base of Watauga Dam. Completed by 1912 the Ocoee Dam No. 1 is the only Hydroelectric dam that is older, Wilbur Dam was one of the first major hydroelectric projects in Tennessee, and remains one of the oldest dams in the TVA system.
Document 8: Melton Hill Dam: 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 5470 acre Melton Hill Lake, and is the only TVA tributary dam serviced by a navigation lock.
Document 9: Watauga Dam: 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 ft , Watauga is the second-highest dam in the TVA river and reservoir system (behind only Fontana), 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 6430 acre , and its tailwaters feed into Wilbur Lake. The Appalachian Trail crosses the top of Watauga Dam.
Document 10: Fontana Dam: 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 accommodate the skyrocketing electricity demands in the Tennessee Valley at the height of World War II. At 480 ft high, Fontana is the tallest dam in the Eastern United States, and at the time of its construction, it was the fourth tallest dam in the world.
Document 11: Hiwassee Dam: 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 6000 acre , and its tailwaters are part of Apalachia Lake. At 307 ft , Hiwassee Dam is the third highest dam in the TVA system, behind only Fontana and Watauga.
Document 12: Norris Dam: Norris Dam is a hydroelectric and flood control structure located on the Clinch River in Anderson County and Campbell County, Tennessee, United States. Its construction in the mid-1930s 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 power in general, and supporter of TVA in particular. The project infrastructure was listed on the National Register of Historic Places in 2016.
Document 13: Watts Bar Dam: 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 39090 acre Watts Bar Lake— which it impounds— and Chickamauga Lake, which stretches from the dam's tailwaters southward to Chattanooga.
Document 14: Fort Patrick Henry Dam: 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 (which were primarily flood control structures) further upstream in preceding years. The dam impounds the 872 acre 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.
Document 15: Cherokee Dam: 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 ft high and impounds the 28780 acre Cherokee Lake. It has a generating capacity of 135,200 kilowatts. 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.
ground_truth: Swain and Graham