Rock Mountain Lake, also known as Pawnee Reservoir, is a private water supply dam located in Jefferson County, Alabama.
Wind
Humidity
Built in 1936, this Earth-type dam stands at 49 feet tall with a hydraulic height of 43 feet. It has a storage capacity of 254 acre-feet, with a normal storage level of 184 acre-feet. The dam is situated on the TR-Barton Branch river, within the jurisdiction of the Mobile District of the US Army Corps of Engineers.
Despite being privately owned, Rock Mountain Lake serves as a significant water source for the surrounding area. With a maximum discharge rate of 296 cubic feet per second, the dam plays a crucial role in water supply management for the region. While the dam's hazard potential is considered significant, its condition assessment has not been rated, highlighting the need for ongoing monitoring and maintenance to ensure its continued safety and functionality.
For water resource and climate enthusiasts, Rock Mountain Lake offers a fascinating example of early 20th-century dam engineering and its importance in providing essential water supply services. As a key infrastructure in Alabama's water management system, this dam serves as a reminder of the delicate balance between human development and environmental sustainability in the face of changing climate conditions.
Year Completed |
1936 |
Dam Length |
1838 |
River Or Stream |
TR-BARTON BRANCH |
Primary Dam Type |
Earth |
Hydraulic Height |
43 |
Nid Storage |
254 |
Structural Height |
49 |
Hazard Potential |
Significant |
Nid Height |
49 |