Roanoke Rapids, located in Northampton County, North Carolina, is a gravity dam constructed in 1955 by Stone & Webster, primarily for hydroelectric purposes.
Wind
Humidity
This impressive structure stands at a height of 72 feet and has a hydraulic height of 62 feet, with a storage capacity of 80,690 acre-feet. The dam spans a length of 3050 feet and features a controlled spillway with a width of 1810 feet.
With a hazard potential rated as high and a risk assessment indicating a very high risk level, Roanoke Rapids is closely monitored by the Federal Energy Regulatory Commission. The dam has 24 Tainter radial gates for water control and is inspected annually to ensure safety standards are met. Despite its high risk, the dam does not fall under state jurisdiction or regulation, highlighting its federal oversight and operations.
Roanoke Rapids serves multiple purposes, including fish and wildlife habitat, recreation, and water supply. It boasts a surface area of 4600 acres and is situated on the Roanoke River, contributing to the overall water resource management in the region. With its significant impact on the local environment and community, Roanoke Rapids stands as a crucial hydroelectric infrastructure in North Carolina's water landscape.
Year Completed |
1955 |
Dam Length |
3050 |
Dam Height |
72 |
River Or Stream |
Roanoke |
Primary Dam Type |
Gravity |
Surface Area |
4600 |
Hydraulic Height |
62 |
Drainage Area |
8400 |
Nid Storage |
80690 |
Structural Height |
72 |
Outlet Gates |
Tainter (radial) - 24 |
Hazard Potential |
High |
Foundations |
Rock |
Nid Height |
72 |
Roanoke River At Roanoke Rapids
|
2810cfs |
Meherrin River At Emporia
|
327cfs |
Meherrin River Near Lawrenceville
|
238cfs |
Fishing Creek Near Enfield
|
129cfs |
Little Fishing Creek Near White Oak
|
13cfs |
Swift Creek At Hilliardston
|
858cfs |