Ada City Lake is an earth dam located in Pontotoc County, Oklahoma, built in 1907. It carries a Significant hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 32 ft32 ft tall and 595 ft long, taller than 74% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Ada City Lake
The primary purpose of Ada City Lake is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by City of Ada (local government). It impounds the Lake Creek near Ada.
The dam stands 32 feet tall and stretches 595 feet across, creates a reservoir covering 16 acres, and has a maximum storage capacity of 339 acre-feet. Completed in 1907, 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 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 08/09/2019.
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Location
| State | Oklahoma |
| County | Pontotoc |
| Nearest City | Ada |
| River/Stream | Lake Creek |
| Coordinates | 34.76176, -96.65472 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 32 ft |
| Dam Height | 32 ft |
| Dam Length | 595 ft |
| Year Completed | 1907 (119 years old) |
Storage & Hydraulics
| NID Storage | 339 acre-ft |
| Max Storage | 339 acre-ft |
| Normal Storage | 108 acre-ft |
| Surface Area | 16 acres |
| Max Discharge | 3,015 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Recreation |
| Owner | City of Ada |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 08/09/2019 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | OK11028 |
| Federal ID | OK11028 |
| More Info | State Dam Safety Program |