Tribe No.6
Tribe No.6 is an earth dam located in Ziebach County, South Dakota, built in 1947. It carries a Low hazard potential classification.
About Tribe No.6
The primary purpose of Tribe No.6 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 Cheyenne River Sioux Tribe (federal). It impounds the Tr Cheyenne.
The dam stands 21 feet tall and stretches 800 feet across, and has a maximum storage capacity of 242 acre-feet. Completed in 1947, 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 | Ziebach |
| Nearest City | None |
| River/Stream | Tr Cheyenne |
| Coordinates | 44.70666, -101.96166 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 21 ft |
| Dam Height | 21 ft |
| Dam Length | 800 ft |
| Year Completed | 1947 (79 years old) |
Storage & Hydraulics
| NID Storage | 242 acre-ft |
| Max Storage | 242 acre-ft |
| Normal Storage | 156 acre-ft |
| Max Discharge | 1,050 cfs |
Ownership & Safety
| Purpose | Water Supply |
| Owner | CHEYENNE RIVER SIOUX TRIBE |
| Owner Type | Federal |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD00775 |
| Federal ID | SD00775 |
| More Info | State Dam Safety Program |