Scs-little Washita River Site-46 is an earth dam located in Grady County, Oklahoma, built in 1972. It carries a Low hazard potential classification.
Dam profile
NID height · 23 ft23 ft tall and 1,120 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Scs-little Washita River Site-46
The primary purpose of Scs-little Washita River Site-46 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 Grady Co Cons Dist (state). It impounds the Hog Creek near Ninnekah.
The dam stands 23 feet tall and stretches 1,120 feet across, creates a reservoir covering 20 acres, and has a maximum storage capacity of 357 acre-feet. Completed in 1972, the structure is well into its service life at over 50 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 01/01/1980. That was over 46 years ago.
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Location
| State | Oklahoma |
| County | Grady |
| Nearest City | Ninnekah |
| River/Stream | Hog Creek |
| Coordinates | 34.97317, -97.97783 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 23 ft |
| Dam Height | 23 ft |
| Dam Length | 1,120 ft |
| Year Completed | 1972 (54 years old) |
Storage & Hydraulics
| NID Storage | 357 acre-ft |
| Max Storage | 357 acre-ft |
| Normal Storage | 96 acre-ft |
| Surface Area | 20 acres |
| Max Discharge | 760 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Grady Co Cons Dist |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 01/01/1980 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OK20851 |
| Federal ID | OK20851 |
| More Info | State Dam Safety Program |