Atoka Reservoir
Atoka Reservoir is an earth dam located in Atoka County, Oklahoma, built in 1957. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Atoka Reservoir
The primary purpose of Atoka Reservoir 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 Oklahoma City Water Utilities Trust (local government).
The dam stands 80 feet tall and stretches 1,190 feet across, creates a reservoir covering 5,300 acres, has a maximum storage capacity of 169,485 acre-feet, and collects water from a drainage area of 178 square miles. Completed in 1957, the structure is well into its service life at over 50 years old.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 10/05/2022.
At 80 feet, this dam is taller than 97% of all dams in the United States.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Oklahoma dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Oklahoma |
| County | Atoka |
| Coordinates | 34.44528, -96.08342 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 80 ft |
| Dam Height | 80 ft |
| Dam Length | 1,190 ft |
| Year Completed | 1957 (69 years old) |
Storage & Hydraulics
| NID Storage | 169,485 acre-ft |
| Max Storage | 169,485 acre-ft |
| Normal Storage | 109,005 acre-ft |
| Surface Area | 5,300 acres |
| Drainage Area | 178 sq mi |
| Max Discharge | 35,000 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | OKLAHOMA CITY WATER UTILITIES TRUST |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 10/05/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | OK00092 |
| Federal ID | OK00092 |
| More Info | State Dam Safety Program |