394:. Congress authorized the construction of Hiwassee Dam in 1935, and work began the following year. TVA also considered two sites in Tennessee for constructing Hiwassee Dam. Original plans called for a $ 13 million dam 185 feet (56 m) high with a 4,000 foot (1,200 m) tunnel. Southern States Power agreed to sell its Hiwassee tract to TVA, although the two entities bickered over the land's value in federal court until 1944, when TVA agreed to a final price of $ 250,000.
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Hiwassee Dam's height required a large mass of concrete which engineers feared would trap heat during its setting, making the dam more vulnerable to cracks. To help heat escape, the dam's concrete sections were divided into blocks no more than 50 feet (15 m) in length. The blocks' joints were
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The construction of
Hiwassee Dam and its reservoir required the purchase of 24,102 acres (9,754 ha) (including the 10,000 acres (4,000 ha) purchased from Southern States Power), 3,836 acres (1,552 ha) of which had to be cleared. 261 families, 462 graves, and 25 miles (40 km) of
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Hiwassee Dam's gates were closed on
February 8, 1940, although minor construction work continued until later that same year. The first generator went online May 21, 1940. The dam's final price tag was just over $ 24 million. Shortly after the project's completion, TVA transferred 17,000 acres
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at
Hiwassee Dam. It used an energy-generating turbine that was run in reverse during low-demand hours to pump water from below the dam into the upper reservoir. This integration of pump and turbine was the first of its kind in the United States; further, at the time it was the largest and most
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measure in 1933 during the
Franklin D. Roosevelt administration, was given oversight of flood control operations in the Tennessee River watershed, which included the Hiwassee. It also intended to develop hydroelectric projects to generate electricity for the rural region. One of TVA's first
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and Murphy in North
Carolina had already established minor dams with generating capacities along the river when major power companies began planning large-scale hydro projects in the valley in the 1920s. The Carolina-Tennessee Power Company (later reorganized as the
332:. It has 180 miles (290 km) of shoreline, a storage capacity of 434,000 acre⋅ft (535,000 dam), and 205,590 acre⋅ft (253,590 dam) of flood storage. The reservoir's operating level varies by roughly 38 feet (12 m) in a typical year.
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roads had to be relocated. Eight new bridges were constructed, and a
Southern Railway trestle required modification. Several changes were necessary to protect the city of Murphy's riverfront, mainly at its main bridge and filtering plant.
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formed with shear keys, and pipes were installed to allow future grouting should it become necessary. Several practices were employed to avoid trapping heat in the setting of the concrete, including the use of low-heat cement.
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Hiwassee Dam was constructed nearly 76 miles (122 km) above the river's mouth, at the downstream end of a large bend in the river known as Fowler Bend. The dam is 10 miles (16 km) upstream from
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In 1952 unit 2 was added, an integration of pump and turbine built by Allis-Chalmers
Company. After the electrical system for the pump failed in 2011, it remained offline until being repaired in 2016.
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460:(Hiwassee Valley Projects Volume 1), Technical Report No. 5 (Washington, D.C.: U.S. Government Printing Office, 1946), pp. 1-8, 39-40, 211, 230, 242, 248.
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Hiwassee Dam is a concrete, gravity-overflow dam 307 feet (94 m) high and 1,376 feet (419 m) long, and has a generating capacity of 185,000
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powerful pump in the world, capable of pumping 1,750,000 gallons of water per minute. The "pump-turbine" at
Hiwassee is designated as a "
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initiatives was to control flooding on the
Hiwassee River, the waters of which contributed to regular seasonal flooding in the city of
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The
Hiwassee Project: A Comprehensive Report on the Planning, Design, Construction, and Initial Operations of the Hiwassee Project
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237:. At 307 feet (94 m), Hiwassee Dam is the highest overspill dam east of the Mississippi River and is second only to
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The hydroelectric potential of the Hiwassee River has been recognized since the early 1900s. The cities of
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633:, National Historic Mechanical Engineering Landmark report, 14 July 1981. Retrieved: 2 October 2013.
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The Nickajack Project: A Report on the Planning, Design, Construction, Initial Operations, and Costs
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through Western North Carolina, where it proceeds to slice a scenic valley through the southern
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dam in the nation. At the time it was completed, it was the highest overspill dam in the world.
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Hiwassee Lake stretches along the river for approximately 22 miles (35 km) to the town of
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Hiwassee Dam is named after the Hiwassee River. The river's name is derived from the
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National Register of Historic Places in Cherokee County, North Carolina
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Hiwassee Dam is the third highest dam in the TVA system, behind only
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Scrapbooks of Edgar F. Pohlmann, Engineering Aide, Hiwassee Dam, TVA
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Dams on the National Register of Historic Places in North Carolina
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221:. It is one of three dams on the river owned and operated by the
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525:"Cherokee County Shows Greatest Progress During 1950-60 Decade"
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of 6,000 acres (2,400 ha), and its tailwaters are part of
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414:(6,900 ha) of its Hiwassee property reservation to the
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Buildings and structures in Cherokee County, North Carolina
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The Hiwassee River flows northwestward from its source in
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Myths of the Cherokee and Sacred Formulas of the Cherokee
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Construction of Hiwassee Dam's powerhouse and switchyard
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and electricity to the region. The dam impounds the
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624:Hiwassee Dam Unit 2 Reversible Pump-Turbine (1956)
502:. North Carolina Department of Cultural Resources
347:National Historic Mechanical Engineering Landmark
225:, which built the dam in the late 1930s to bring
596:(Nashville, Tenn.: C and R Elder, 1972), p. 512.
500:North Carolina Highway Historical Marker Program
418:for inclusion in the Nantahala National Forest.
365:TVA's design plan for Hiwassee Dam, circa 1936
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1275:Hydroelectric power plants in North Carolina
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351:American Society of Mechanical Engineers
1285:Energy infrastructure completed in 1940
657:"TVA Co-operating In Brasstown Program"
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1310:1940 establishments in North Carolina
645:, TVA.gov. Retrieved: 2 October 2013.
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1300:Historic districts in North Carolina
523:McKeever, Mrs. Hobart (1961-01-29).
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254:National Register of Historic Places
16:Dam in North Carolina, United States
655:Robertson, Jr., A.T. (1934-09-27).
181:968 sq mi (2,510 km)
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1260:Tennessee Valley Authority dams
471:"Hiwassee Dam (Q-54) | NC DNCR"
48:Cherokee County, North Carolina
614:. Retrieved: 25 January 2009.
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376:Southern States Power Company
666:. Murphy, N.C. pp. 8–9.
610:Tennessee Valley Authority,
555:Tennessee Valley Authority,
456:Tennessee Valley Authority,
283:en route to its mouth along
357:Background and construction
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1255:Dams on the Hiwassee River
793:Tennessee Valley Authority
383:Tennessee Valley Authority
223:Tennessee Valley Authority
144:1,376 ft (419 m)
112:Tennessee Valley Authority
749:— official TVA site
305:Nantahala National Forest
26:
1055:Coal-fired power plants
737:Renewable energy portal
530:Asheville Citizen-Times
217:, in the U.S. state of
192:Installed capacity
136:307 ft (94 m)
92:Construction began
1280:Dams completed in 1940
1270:Dams in North Carolina
643:The Mountaintop Marvel
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330:Murphy, North Carolina
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281:Appalachian Mountains
277:Towns County, Georgia
76:35.15139°N 84.17750°W
1216:Nuclear power plants
709:United States portal
807:generating stations
416:U.S. Forest Service
235:Apalachia Reservoir
177:Catchment area
164:Total capacity
81:35.15139; -84.17750
72: /
1133:Gas turbine plants
895:Fort Patrick Henry
747:Hiwassee Reservoir
664:The Cherokee Scout
629:2013-10-04 at the
612:Hiwassee Reservoir
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171:(535,000 dam)
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920:Little Bear Creek
207:hydroelectric dam
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100:Opening date
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990:Raccoon Mountain
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36:Official name
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1224:Browns Ferry
1186:Lagoon Creek
1176:Johnsonville
1118:Widows Creek
1093:Johnsonville
909:
905:Guntersville
890:Fort Loudoun
825:Beaver Creek
723:Water portal
682:the original
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577:. Retrieved
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477:. 2024-01-23
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203:Hiwassee Dam
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39:Hiwassee Dam
22:Hiwassee Dam
1171:John Sevier
1146:Brownsville
1088:John Sevier
930:Melton Hill
900:Great Falls
870:Clear Creek
865:Chickamauga
850:Cedar Creek
574:www.nps.gov
392:Chattanooga
301:Chatuge Dam
108:Operator(s)
79: /
55:Coordinates
1249:Categories
1078:Cumberland
940:Nolichucky
925:Lost Creek
835:Blue Ridge
820:Bear Creek
789:Facilities
579:2024-03-15
537:2024-03-21
506:2023-08-06
481:2024-04-14
425:References
67:84°10′39″W
1234:Watts Bar
1206:Southaven
1151:Caledonia
1113:Watts Bar
1030:Watts Bar
1015:Tims Ford
935:Nickajack
815:Apalachia
349:" by the
323:kilowatts
289:Tennessee
263:word for
256:in 2017.
149:Reservoir
1229:Sequoyah
1201:Paradise
1196:Marshall
1191:Magnolia
1161:Gallatin
1103:Paradise
1098:Kingston
1083:Gallatin
1068:Bull Run
1005:Sycamore
945:Normandy
915:Kentucky
910:Hiwassee
860:Cherokee
627:Archived
387:New Deal
353:(ASME).
317:Capacity
271:Location
261:Cherokee
123:Impounds
64:35°9′5″N
44:Location
1166:Gleason
1156:Colbert
1108:Shawnee
1073:Colbert
1035:Wheeler
1025:Watauga
1010:Tellico
980:Pin Oak
970:Ocoee 3
965:Ocoee 2
960:Ocoee 1
955:Nottely
885:Fontana
880:Douglas
875:Dogwood
855:Chatuge
371:Andrews
265:savanna
250:Watauga
246:Fontana
209:on the
169:acre⋅ft
154:Creates
1181:Kemper
1123:Wilson
1045:Wilson
1040:Wilbur
995:Redbud
950:Norris
196:185 MW
141:Length
133:Height
1141:Allen
1063:Allen
845:Cedar
840:Boone
830:Beech
660:(PDF)
205:is a
985:Pine
803:and
801:Dams
381:The
248:and
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