Upper Pecan Bayou WS SCS Site 22 Dam, located in Callahan, Texas, is a key structure designed by the USDA NRCS for flood risk reduction along the Little Pecan Bayou.
Wind
Humidity
Completed in 1967, this earth dam stands at a height of 36 feet and has a length of 1375 feet, providing storage of up to 1102 acre-feet. With a primary purpose of flood risk reduction and secondary purpose of irrigation, this dam plays a crucial role in managing water resources in the area.
The dam features an uncontrolled spillway with a width of 75 feet and three uncontrolled outlet gates. Its design includes a buttress core supported by rock and soil foundations. Despite being last inspected in 1974, the dam's condition assessment remains unrated. The risk assessment indicates a moderate risk level (3), emphasizing the importance of continued monitoring and management to ensure the safety and effectiveness of the structure in the face of changing climate conditions. For water resource and climate enthusiasts, Upper Pecan Bayou WS SCS Site 22 Dam serves as a fascinating example of infrastructure designed to mitigate flood risks and support agricultural irrigation in Texas.
Year Completed |
1967 |
Dam Length |
1375 |
Dam Height |
36 |
River Or Stream |
LITTLE PECAN BAYOU |
Primary Dam Type |
Earth |
Surface Area |
64.3 |
Hydraulic Height |
36 |
Drainage Area |
3.13 |
Nid Storage |
1102 |
Structural Height |
36 |
Outlet Gates |
Uncontrolled - 3 |
Hazard Potential |
Not Available |
Foundations |
Rock, Soil |
Nid Height |
36 |
Pecan Bayou Nr Cross Cut
|
436cfs |
Jim Ned Ck At Cr 140 Nr Coleman
|
0cfs |
Hords Ck Nr Coleman
|
0cfs |
Deep Ck At Moran
|
0cfs |
Copperas Ck At Fm 2247 Nr Comanche
|
2cfs |
Sabana Rv Nr De Leon
|
0cfs |