Circle C No.1
Circle C No.1 is an earth dam located in Custer County, South Dakota, built in 1951. It carries a Low hazard potential classification.
About Circle C No.1
The primary purpose of Circle C No.1 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 Kelly Fortune (private). It impounds the Tr-cheyenne.
The dam stands 18 feet tall and stretches 600 feet across, and has a maximum storage capacity of 57 acre-feet. Completed in 1951, the structure is well into its service life at over 50 years old.
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 | Tr-cheyenne |
| Coordinates | 43.76166, -102.81499 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 18 ft |
| Dam Height | 18 ft |
| Dam Length | 600 ft |
| Year Completed | 1951 (75 years old) |
Storage & Hydraulics
| NID Storage | 57 acre-ft |
| Max Storage | 57 acre-ft |
| Normal Storage | 28 acre-ft |
| Max Discharge | 630 cfs |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | KELLY FORTUNE |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD01371 |
| Federal ID | SD01371 |
| More Info | State Dam Safety Program |