Usa
Usa is an earth dam located in Perkins County, South Dakota, built in 1950. It carries a Low hazard potential classification.
About Usa
The primary purpose of Usa 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 Usda Fs (federal). It impounds the Tr-grand River.
The dam stands 16 feet tall and stretches 640 feet across, and has a maximum storage capacity of 80 acre-feet. Completed in 1950, the structure is well-established, with more than 75 years of service.
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.
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Location
| State | South Dakota |
| County | Perkins |
| Nearest City | None |
| River/Stream | Tr-grand River |
| Coordinates | 45.91173, -102.54305 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 16 ft |
| Dam Height | 16 ft |
| Dam Length | 640 ft |
| Year Completed | 1950 (76 years old) |
Storage & Hydraulics
| NID Storage | 80 acre-ft |
| Max Storage | 80 acre-ft |
| Normal Storage | 62 acre-ft |
| Max Discharge | 2,400 cfs |
Ownership & Safety
| Purpose | Water Supply |
| Owner | USDA FS |
| Owner Type | Federal |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD02113 |
| Federal ID | SD02113 |
| More Info | State Dam Safety Program |