Mcalister Ranch Dam No 4, located in Hays, Texas, was completed in 1975 and stands at a height of 17 feet, primarily serving the purpose of irrigation.
Wind
Humidity
The dam is made of concrete and spans across Onion Creek, with a storage capacity of 56 acre-feet and a surface area of 5.4 acres. It has an uncontrolled spillway with a width of 515 feet, allowing for a maximum discharge of 11,000 cubic feet per second.
Managed by a private owner, Mcalister Ranch Dam No 4 has undergone modifications in 1987 to enhance its structural integrity. Although it is not regulated by the state of Texas, the dam is subject to regular inspections every five years to ensure its safety and functionality. Despite its moderate risk level, the dam has not been rated for its current condition, highlighting the need for ongoing risk management measures to mitigate any potential hazards. Overall, Mcalister Ranch Dam No 4 plays a crucial role in supporting agricultural activities in the region while also contributing to water resource management in the area.
Years Modified |
1987 - Structural |
Year Completed |
1975 |
Dam Height |
17 |
River Or Stream |
ONION CREEK |
Primary Dam Type |
Concrete |
Surface Area |
5.4 |
Hydraulic Height |
17 |
Drainage Area |
3.37 |
Nid Storage |
56 |
Structural Height |
17 |
Outlet Gates |
Uncontrolled - 4 |
Hazard Potential |
Not Available |
Foundations |
Rock, Soil |
Nid Height |
17 |
| Location | Reservations | Toilets |
|---|---|---|
Flat Creek Crossing Ranch
|
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Pedernales Falls State Park
|
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Blanco State Park
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