U S A
U S A is an earth dam located in Sully County, South Dakota, built in 1938. It carries a Low hazard potential classification.
About U S A
The primary purpose of U S A 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 Department Of Interior Usa (federal). It impounds the Trib Medicine Knoll Creek.
The dam stands 26 feet tall and stretches 690 feet across, and has a maximum storage capacity of 624 acre-feet. Completed in 1938, 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 | Sully |
| Nearest City | None |
| River/Stream | Trib Medicine Knoll Creek |
| Coordinates | 44.69666, -99.81499 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 26 ft |
| Dam Height | 26 ft |
| Dam Length | 690 ft |
| Year Completed | 1938 (88 years old) |
Storage & Hydraulics
| NID Storage | 624 acre-ft |
| Max Storage | 624 acre-ft |
| Normal Storage | 272 acre-ft |
| Max Discharge | 3,570 cfs |
Ownership & Safety
| Purpose | Water Supply |
| Owner | DEPARTMENT OF INTERIOR USA |
| Owner Type | Federal |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD00441 |
| Federal ID | SD00441 |
| More Info | State Dam Safety Program |