Located in Hays, Texas, the Upper San Marcos River WS SCS Site 1 is a flood risk reduction structure designed by the USDA NRCS in 1983.
Wind
Humidity
This earth dam on Sink Creek stands at 80 feet tall and stretches 2905 feet in length, with a storage capacity of 18,399 acre-feet to mitigate potential flooding in the area. The dam's spillway, with a width of 354 feet, is uncontrolled, allowing for efficient water flow during high discharge events.
Maintained by the TCEQ, this dam is crucial for protecting the surrounding communities from flooding, with a satisfactory condition assessment as of May 2018. The structure's emergency action plan dates back to March 2012, ensuring timely response in case of emergencies. With a moderate risk assessment, the Upper San Marcos River WS SCS Site 1 serves as a vital asset for water resource and climate enthusiasts in the region, highlighting the importance of effective flood risk reduction measures in preserving the local environment and community well-being.
Year Completed |
1983 |
Dam Length |
2905 |
Dam Height |
80 |
River Or Stream |
SINK CREEK |
Primary Dam Type |
Earth |
Surface Area |
25 |
Hydraulic Height |
80 |
Drainage Area |
33.6 |
Nid Storage |
18399 |
Structural Height |
80 |
Outlet Gates |
Slide (sluice gate) - 1, Uncontrolled - 2 |
Hazard Potential |
Not Available |
Foundations |
Unlisted/Unknown |
Nid Height |
80 |
San Marcos Rv At San Marcos
|
82cfs |
Blanco Rv At San Marcos
|
0cfs |
Blanco Rv Nr Kyle
|
0cfs |
Blanco Rv At Halifax Rch Nr Kyle
|
5cfs |
Blanco Rv At Wimberley
|
8cfs |
San Marcos Rv Nr Martindale
|
89cfs |