John Sevier Dam, also known as John Sevier Detention Dam, is a concrete structure located on the Holston River in Hawkins, Tennessee.
Wind
Humidity
Built in 1955 by the Tennessee Valley Authority (TVA), this dam serves as a vital water supply source with a storage capacity of 5,500 acre-feet. With a height of 20 feet and a hydraulic height of 45 feet, the dam plays a crucial role in regulating water flow and ensuring a stable water supply for the region.
The dam, with a length of 1,110 feet and a spillway width of 636 feet, has a significant hazard potential and is classified as having a moderate risk level. Despite its age, the dam remains in good condition as per the latest inspection in December 2020, with an inspection frequency of every 2 years. Operated and maintained by the TVA, the John Sevier Dam exemplifies the agency's commitment to water resource management and safety in the region.
With its primary purpose being water supply, the John Sevier Dam stands as a testament to engineering excellence and serves as a crucial infrastructure for water storage and management on the Holston River. As a Federal-owned structure, it continues to play a pivotal role in ensuring water security and flood control measures in the area, highlighting the importance of responsible water resource management in the face of climate change and increasing water demands.
Year Completed |
1955 |
Dam Length |
1110 |
Dam Height |
20 |
River Or Stream |
HOLSTON RIVER |
Primary Dam Type |
Concrete |
Surface Area |
660 |
Hydraulic Height |
45 |
Drainage Area |
3006 |
Nid Storage |
5500 |
Structural Height |
48 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Significant |
Foundations |
Rock |
Nid Height |
48 |
Big Creek Near Rogersville
|
52cfs |
Crockett Creek Below Rogersville
|
5cfs |
Clinch River Near Looneys Gap
|
1750cfs |
Powell River Near Jonesville
|
548cfs |
Nolichucky River Near Lowland
|
1360cfs |
Big Limestone Creek Near Limestone
|
25cfs |