County Line Dam
County Line Dam is an earth dam located in Custer County, South Dakota, built in 1945. It carries a Low hazard potential classification.
About County Line Dam
The primary purpose of County Line Dam is fire protection, stock, or small fish pond. The dam maintains a small impoundment used for fire suppression, livestock watering, or as a fish pond. The dam is owned by A.j. Barta Ranch (private). It impounds the Tributary Cheyenne River.
The dam stands 26 feet tall and stretches 950 feet across, and has a maximum storage capacity of 780 acre-feet. Completed in 1945, 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 | Custer |
| Nearest City | None |
| River/Stream | Tributary Cheyenne River |
| Coordinates | 43.47764, -103.05238 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 26 ft |
| Dam Height | 26 ft |
| Dam Length | 950 ft |
| Year Completed | 1945 (81 years old) |
Storage & Hydraulics
| NID Storage | 780 acre-ft |
| Max Storage | 780 acre-ft |
| Normal Storage | 660 acre-ft |
| Max Discharge | 1,890 cfs |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | A.J. BARTA RANCH |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD01215 |
| Federal ID | SD01215 |
| More Info | State Dam Safety Program |