Jim Hall Lake
Jim Hall Lake is an earth dam located in Okmulgee County, Oklahoma, built in 1928. It carries a High hazard potential classification and has a poor condition assessment.
About Jim Hall Lake
The primary purpose of Jim Hall 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 Henryetta (local government). It impounds the Wolf Creek near Four Corners.
The dam stands 49 feet tall and stretches 2,400 feet across, creates a reservoir covering 525 acres, has a maximum storage capacity of 11,550 acre-feet, and collects water from a drainage area of 20 square miles. Completed in 1928, the structure is well-established, with more than 75 years of service.
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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. An emergency action plan is in place for this dam. The most recent inspection on record was 12/15/2022.
At 49 feet, this dam is taller than 92% of dams nationwide.
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 | Okmulgee |
| Nearest City | Four Corners |
| River/Stream | Wolf Creek |
| Coordinates | 35.41785, -95.92173 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 49 ft |
| Dam Height | 49 ft |
| Dam Length | 2,400 ft |
| Year Completed | 1928 (98 years old) |
Storage & Hydraulics
| NID Storage | 11,550 acre-ft |
| Max Storage | 11,550 acre-ft |
| Normal Storage | 6,660 acre-ft |
| Surface Area | 525 acres |
| Drainage Area | 20 sq mi |
| Max Discharge | 26,600 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | CITY OF HENRYETTA |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Poor |
| Last Inspection | 12/15/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | OK10237 |
| Federal ID | OK10237 |
| More Info | State Dam Safety Program |