Impoundment C-66, located in Fairfield, Texas, is a private dam regulated by the Texas Commission on Environmental Quality (TCEQ).
Wind
Humidity
Completed in 1989, this earth dam stands at a height of 24 feet and stretches 6000 feet in length, providing storage for tailings from the Tehuacana River. With a maximum storage capacity of 1945 acre-feet and a normal storage level of 464 acre-feet, the dam covers a surface area of 114.8 acres and drains an area of 3.32 square miles.
The dam features an uncontrolled spillway that is 212 feet wide and has undergone structural modifications in 1999. It is equipped with slide gates and uncontrolled outlets to manage water flow, with a maximum discharge capacity of 2405 cubic feet per second. While the dam's hazard potential and condition assessment are not currently rated, a moderate risk level has been assigned to it based on available data.
Despite its private ownership, Impoundment C-66 plays a crucial role in managing water resources in the region and presents opportunities for further study and monitoring by water resource and climate enthusiasts. Its location, design features, and operational history make it a compelling subject for understanding the intersection of human activity and natural systems in water management.
Years Modified |
1999 - Structural |
Year Completed |
1989 |
Dam Length |
6000 |
Dam Height |
24 |
River Or Stream |
TEHUACANA |
Primary Dam Type |
Earth |
Surface Area |
114.8 |
Hydraulic Height |
24 |
Drainage Area |
3.32 |
Nid Storage |
1945 |
Structural Height |
24 |
Outlet Gates |
Slide (sluice gate) - 2, Uncontrolled - 2 |
Hazard Potential |
Not Available |
Foundations |
Unlisted/Unknown |
Nid Height |
24 |
Trinity Rv At Hwy 287 Nr Cayuga
|
1890cfs |
Tehuacana Ck Nr Streetman
|
2cfs |
Trinity Rv At Trinidad
|
2210cfs |
Trinity Rv Nr Oakwood
|
3190cfs |
Upper Keechi Ck Nr Oakwood
|
18cfs |
Big Ck Nr Freestone
|
2cfs |