Scs-little Washita River Site-21
Scs-little Washita River Site-21 is an earth dam located in Comanche County, Oklahoma, built in 1970. It carries a Low hazard potential classification.
About Scs-little Washita River Site-21
The primary purpose of Scs-little Washita River Site-21 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 Comanche Co Cons Dist (state). It impounds the Tr-little Washita River near Cedar Grove.
The dam stands 33 feet tall and stretches 1,400 feet across, creates a reservoir covering 6 acres, and has a maximum storage capacity of 206 acre-feet. Completed in 1970, 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 09/30/1985. That was over 40 years ago.
At 33 feet, this dam is taller than 78% of dams nationwide.
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Location
| State | Oklahoma |
| County | Comanche |
| Nearest City | Cedar Grove |
| River/Stream | Tr-little Washita River |
| Coordinates | 34.83449, -98.18733 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 33 ft |
| Dam Height | 33 ft |
| Dam Length | 1,400 ft |
| Year Completed | 1970 (56 years old) |
Storage & Hydraulics
| NID Storage | 206 acre-ft |
| Max Storage | 206 acre-ft |
| Normal Storage | 46 acre-ft |
| Surface Area | 6 acres |
| Max Discharge | 425 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | COMANCHE CO CONS DIST |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Last Inspection | 09/30/1985 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OK20768 |
| Federal ID | OK20768 |
| More Info | State Dam Safety Program |