Lake Olney Dam
Lake Olney Dam is an earth dam located in Archer County, Texas, built in 1922. It carries a Significant hazard potential classification and has a poor condition assessment.
About Lake Olney Dam
The primary purpose of Lake Olney Dam is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by City Of Olney (local government). It impounds the Mesquite Creek.
The dam stands 34 feet tall and stretches 1,490 feet across, creates a reservoir covering 134 acres, has a maximum storage capacity of 7,394 acre-feet, and collects water from a drainage area of 7 square miles. Completed in 1922, the structure is over a century old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 02/08/2023.
At 34 feet, this dam is taller than 80% of dams nationwide.
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Location
| State | Texas |
| County | Archer |
| River/Stream | Mesquite Creek |
| Coordinates | 33.44144, -98.78216 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 34 ft |
| Dam Height | 34 ft |
| Dam Length | 1,490 ft |
| Year Completed | 1922 (104 years old) |
Storage & Hydraulics
| NID Storage | 7,394 acre-ft |
| Max Storage | 7,394 acre-ft |
| Normal Storage | 2,150 acre-ft |
| Surface Area | 134 acres |
| Drainage Area | 7 sq mi |
| Max Discharge | 1 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | CITY OF OLNEY |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 02/08/2023 |
| Emergency Action Plan | No |
Identifiers
| NID ID | TX00997 |
| Federal ID | TX00997 |
| More Info | State Dam Safety Program |