Trail City Dam
Trail City Dam is an earth dam located in Corson County, South Dakota, built in 1935. It carries a Low hazard potential classification.
About Trail City Dam
The primary purpose of Trail City Dam 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 Standing Rock Tribe (federal). It impounds the Snake Creek.
The dam stands 24 feet tall and stretches 650 feet across, creates a reservoir covering 78 acres, and has a maximum storage capacity of 500 acre-feet. Completed in 1935, 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 | Corson |
| Nearest City | None |
| River/Stream | Snake Creek |
| Coordinates | 45.48333, -100.73832 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 24 ft |
| Dam Height | 24 ft |
| Dam Length | 650 ft |
| Year Completed | 1935 (91 years old) |
Storage & Hydraulics
| NID Storage | 500 acre-ft |
| Max Storage | 500 acre-ft |
| Normal Storage | 234 acre-ft |
| Surface Area | 78 acres |
| Max Discharge | 2,900 cfs |
Ownership & Safety
| Purpose | Water Supply |
| Owner | STANDING ROCK TRIBE |
| Owner Type | Federal |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD02334 |
| Federal ID | SD02334 |
| More Info | State Dam Safety Program |