Sooner
Sooner is an earth dam located in Pawnee County, Oklahoma, built in 1972. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Sooner
Sooner is a dam in Pawnee, Oklahoma. The dam is owned by Og&e (public utility). It impounds the Greasy Cr near Ralston.
The dam stands 100 feet tall and stretches 4,500 feet across, creates a reservoir covering 5,400 acres, has a maximum storage capacity of 350,000 acre-feet, and collects water from a drainage area of 28 square miles. Completed in 1972, 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 satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 10/21/2021.
At 100 feet, this dam is taller than 98% of all dams in the United States.
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Location
| State | Oklahoma |
| County | Pawnee |
| Nearest City | Ralston |
| River/Stream | Greasy Cr |
| Coordinates | 36.45848, -96.99476 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 100 ft |
| Dam Height | 100 ft |
| Dam Length | 4,500 ft |
| Year Completed | 1972 (54 years old) |
Storage & Hydraulics
| NID Storage | 350,000 acre-ft |
| Max Storage | 350,000 acre-ft |
| Normal Storage | 149,000 acre-ft |
| Surface Area | 5,400 acres |
| Drainage Area | 28 sq mi |
| Max Discharge | 4,000 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Other |
| Owner | OG&E |
| Owner Type | Public Utility |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 10/21/2021 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OK11103 |
| Federal ID | OK11103 |
| More Info | State Dam Safety Program |