Osborn Grant
Osborn Grant is an earth dam located in Hughes County, Oklahoma, built in 1978. It carries a Low hazard potential classification.
About Osborn Grant
The primary purpose of Osborn Grant is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Ray & Clara Steele (private). It impounds the Tr-long George Cr near Wetumka.
The dam stands 25 feet tall and stretches 500 feet across, creates a reservoir covering 4 acres, and has a maximum storage capacity of 187 acre-feet. Completed in 1978, the structure is 48 years old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. The most recent inspection on record was 08/09/2011. That was over 14 years ago.
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Location
| State | Oklahoma |
| County | Hughes |
| Nearest City | Wetumka |
| River/Stream | Tr-long George Cr |
| Coordinates | 35.24808, -96.40747 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Height | 25 ft |
| Dam Length | 500 ft |
| Year Completed | 1978 (48 years old) |
Storage & Hydraulics
| NID Storage | 187 acre-ft |
| Max Storage | 187 acre-ft |
| Normal Storage | 100 acre-ft |
| Surface Area | 4 acres |
| Max Discharge | 1,630 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | RAY & CLARA STEELE |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Last Inspection | 08/09/2011 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OK13123 |
| Federal ID | OK13123 |
| More Info | State Dam Safety Program |