Mountain Lake
Mountain Lake is a buttress dam located in Carter County, Oklahoma, built in 1956. It carries a Significant hazard potential classification and has a fair condition assessment.
About Mountain Lake
The primary purpose of Mountain Lake 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 Ardmore (local government). It impounds the Hickory Creek near Ardmore.
The dam stands 56 feet tall and stretches 618 feet across, creates a reservoir covering 210 acres, has a maximum storage capacity of 3,380 acre-feet, and collects water from a drainage area of 12 square miles. Completed in 1956, the structure is well into its service life at over 50 years 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 fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. An emergency action plan is in place for this dam. The most recent inspection on record was 12/15/2021.
At 56 feet, this dam is taller than 94% of dams nationwide.
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Location
| State | Oklahoma |
| County | Carter |
| Nearest City | Ardmore |
| River/Stream | Hickory Creek |
| Coordinates | 34.36636, -97.28515 |
Physical Characteristics
| Dam Type | Buttress |
| NID Height | 56 ft |
| Dam Height | 56 ft |
| Dam Length | 618 ft |
| Year Completed | 1956 (70 years old) |
Storage & Hydraulics
| NID Storage | 3,380 acre-ft |
| Max Storage | 3,380 acre-ft |
| Normal Storage | 3,040 acre-ft |
| Surface Area | 210 acres |
| Drainage Area | 12 sq mi |
| Max Discharge | 45,170 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | CITY OF ARDMORE |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 12/15/2021 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | OK10501 |
| Federal ID | OK10501 |
| More Info | State Dam Safety Program |