Located on the Upper San Marcos River in Hays County, Texas, the NRCS Site 5 Dam stands as a testament to the collaborative efforts of the local government and the USDA NRCS in managing flood risk along the Purgatory Creek.
Wind
Humidity
Completed in 1989, this earth dam with a maximum height of 80 feet and a length of 2959 feet plays a crucial role in reducing the impact of flooding in the region, with a storage capacity of 7329 acre-feet.
With a drainage area of 14.41 square miles and a maximum discharge capacity of 50278 cubic feet per second, the dam is designed to mitigate flood events while maintaining a satisfactory condition assessment as of May 2018. The uncontrolled spillway, with a width of 305 feet, adds an extra layer of protection in times of high water levels. Despite its moderate risk rating, the NRCS Site 5 Dam continues to serve as a vital infrastructure for flood risk reduction in the area, showcasing the importance of proactive water resource management in the face of climate change challenges.
Years Modified |
2000 - Other |
Year Completed |
1989 |
Dam Length |
2959 |
Dam Height |
71 |
River Or Stream |
PURGATORY CREEK |
Primary Dam Type |
Earth |
Surface Area |
30 |
Hydraulic Height |
71 |
Drainage Area |
14.41 |
Nid Storage |
7329 |
Structural Height |
80 |
Outlet Gates |
Uncontrolled - 2 |
Hazard Potential |
Not Available |
Foundations |
Soil |
Nid Height |
80 |
San Marcos Rv At San Marcos
|
82cfs |
Blanco Rv At San Marcos
|
0cfs |
San Marcos Rv Nr Martindale
|
89cfs |
Blanco Rv Nr Kyle
|
0cfs |
Blanco Rv At Halifax Rch Nr Kyle
|
5cfs |
Blanco Rv At Wimberley
|
8cfs |