O.C.
Wind
Humidity
Fisher Dam, also known as O. C. Fisher Lake, is a Federal-owned earth dam located on the Concho River in San Angelo, Texas. Completed in 1952, the dam primarily serves the purpose of flood risk reduction, with additional benefits including fish and wildlife pond, recreation, and water supply. With a height of 128 feet and a length of 40,885 feet, the dam has a storage capacity of 766,000 acre-feet and a surface area of 5,400 acres.
Despite its role in reducing flood risk to downstream communities, a risk assessment conducted in May 2020 classified the dam's hazard potential as high due to the large population living in the immediate downstream area. The most significant risk comes from high-volume releases through the uncontrolled spillway during extreme weather events, potentially putting thousands of people at risk. To mitigate these risks, regular inspections, surveillance, and maintenance are conducted, while an updated Emergency Action Plan ensures coordinated responses in case of emergencies. A planned study in 2022 aims to further analyze and reduce the risks associated with the dam, highlighting ongoing efforts to safeguard the surrounding communities and infrastructure.
Year Completed |
1952 |
Dam Length |
40885 |
Dam Height |
128 |
River Or Stream |
CONCHO RIVER |
Primary Dam Type |
Earth |
Surface Area |
5400 |
Hydraulic Height |
122 |
Drainage Area |
1511 |
Nid Storage |
766000 |
Structural Height |
130 |
Outlet Gates |
Uncontrolled - 0 |
Hazard Potential |
High |
Foundations |
Rock, Soil |
Nid Height |
130 |