Chisholm Number 1
Key Takeaway
Chisholm Number 1 is classified as low hazard in South Dakota. It was completed in 1967 and is 59 years old. Its primary use is water supply.
Physical Details
| Dam Height | 27 ft (taller than 71.8% in SD) |
| Dam Length | 531 ft |
| Dam Type | Earth |
| Max Storage | 72 acre-ft |
| Normal Storage | 32 acre-ft |
| Max Discharge | 1,000 cfs |
| Year Completed | 1967 (59 years old) |
| NID ID | SD00220 |
Safety Information
No probable loss of human life and low economic/environmental losses expected.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
D. CHISHOLM
Private
Nearby Dams
Anderson Number 1
Stanley, SD
Low Hazard 15 ftBown Dam
Stanley, SD
Low Hazard 31 ftJ.E. Sheehan Estate #1
Stanley, SD
Low Hazard 30 ftLawrence Donelan
Stanley, SD
Low Hazard 39 ftWalter Thompson
Stanley, SD
Low Hazard 25 ftJ.E. Sheehan Estate #3
Stanley, SD
Low Hazard 25 ftW.N. Barrick Estate
Stanley, SD
Low Hazard 28 ftRose Ranch Dam
Stanley, SD
Low Hazard 19 ftFrequently Asked Questions
What is the hazard classification of Chisholm Number 1?
Chisholm Number 1 is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Chisholm Number 1?
Chisholm Number 1 is owned by D. CHISHOLM (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Chisholm Number 1 built?
Chisholm Number 1 was completed in 1967, making it 59 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 Chisholm Number 1?
Chisholm Number 1 serves the following purposes: Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Chisholm Number 1?
Chisholm Number 1 has a dam height of 27 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.