Allison Dam is a gravity dam located in Concho County, Texas, built in 1918. It carries a Low hazard potential classification.
Dam profile
NID height · 10 ft10 ft tall and 216 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic concrete gravity section and the water level is illustrative.
About Allison Dam
The primary purpose of Allison Dam is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Mc Vinson (private). It impounds the Concho River near Paint Rock.
The dam stands 10 feet tall and stretches 216 feet across, and has a maximum storage capacity of 450 acre-feet. Completed in 1918, the structure is over a century old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. The most recent inspection on record was 05/28/1976. That was over 50 years ago.
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Location
| State | Texas |
| County | Concho |
| Nearest City | Paint Rock |
| River/Stream | Concho River |
| Coordinates | 31.51717, -99.97836 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 10 ft |
| Dam Height | 10 ft |
| Dam Length | 216 ft |
| Year Completed | 1918 (108 years old) |
Storage & Hydraulics
| NID Storage | 450 acre-ft |
| Max Storage | 450 acre-ft |
| Normal Storage | 450 acre-ft |
| Spillway Type | None |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Mc Vinson |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 05/28/1976 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | TX01652 |
| Federal ID | TX01652 |
| More Info | State Dam Safety Program |