Sahoma Lake
Sahoma Lake is an earth dam located in Creek County, Oklahoma, built in 1947. It carries a High hazard potential classification and has a poor condition assessment.
About Sahoma Lake
The primary purpose of Sahoma 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 Sapulpa (local government). It impounds the Rock Creek near Sapulpa.
The dam stands 45 feet tall and stretches 1,320 feet across, creates a reservoir covering 344 acres, has a maximum storage capacity of 5,270 acre-feet, and collects water from a drainage area of 37 square miles. Completed in 1947, 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 10/12/2022.
At 45 feet, this dam is taller than 91% 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 | Creek |
| Nearest City | Sapulpa |
| River/Stream | Rock Creek |
| Coordinates | 36.03084, -96.14807 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 45 ft |
| Dam Height | 45 ft |
| Dam Length | 1,320 ft |
| Year Completed | 1947 (79 years old) |
Storage & Hydraulics
| NID Storage | 5,270 acre-ft |
| Max Storage | 5,270 acre-ft |
| Normal Storage | 4,850 acre-ft |
| Surface Area | 344 acres |
| Drainage Area | 37 sq mi |
| Max Discharge | 52,900 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | CITY OF SAPULPA |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Poor |
| Last Inspection | 10/12/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | OK00566 |
| Federal ID | OK00566 |
| More Info | State Dam Safety Program |