Circle C No.2
Key Takeaway
Circle C No.2 is classified as significant hazard in South Dakota. It was completed in 1956 and is 70 years old. Its primary use is fire protection. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 30 ft (taller than 85.2% in SD) |
| Dam Length | 390 ft |
| Dam Type | Earth |
| Max Storage | 85 acre-ft |
| Normal Storage | 48 acre-ft |
| Surface Area | 2 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 262 cfs |
| Year Completed | 1956 (70 years old) |
| NID ID | SD01372 |
Safety Information
No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
LOREN SUNDQUIST
Private
Nearby Dams
Circle C No.1
Custer, SD
Low Hazard 18 ftEarl Witte No.1
Custer, SD
Low Hazard 21 ftM. Scism No.1
Custer, SD
Low Hazard 28 ftG. Flier
Custer, SD
Low Hazard 19 ftPat Brown
Custer, SD
Low Hazard 28 ftM. Scism No.2
Custer, SD
Low Hazard 27 ftC. Peterson
Custer, SD
Low Hazard 25 ftBloom
Pennington, SD
Low HazardFrequently Asked Questions
What is the hazard classification of Circle C No.2?
Circle C No.2 is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Circle C No.2?
Circle C No.2 is owned by LOREN SUNDQUIST (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Circle C No.2 built?
Circle C No.2 was completed in 1956, making it 70 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.
What is the primary purpose of Circle C No.2?
Circle C No.2 serves the following purposes: Fire Protection, Stock, Or Small Fish Pond. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Circle C No.2?
Circle C No.2 has a dam height of 30 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.
When was Circle C No.2 last inspected?
Circle C No.2 was last inspected on August 7, 1979. Inspection dates indicate when a formal review occurred, not the results of that inspection.