Henry Holwenger
Key Takeaway
Henry Holwenger is classified as significant hazard in South Dakota. It was completed in 1940 and is 86 years old. Its primary use is fire protection. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 19 ft (taller than 29.5% in SD) |
| Dam Length | 1,000 ft |
| Dam Type | Earth |
| Max Storage | 144 acre-ft |
| Normal Storage | 54 acre-ft |
| Max Discharge | 6,240 cfs |
| Year Completed | 1940 (86 years old) |
| NID ID | SD00733 |
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
HENRY HOLWENGER
Private
Nearby Dams
Maciejewski #1
Corson, SD
Low Hazard 18 ftTroy Lee Hunt
Corson, SD
Significant Hazard 21 ftStanding Rock Tribe
Corson, SD
Low Hazard 16 ftStanding Rock No. 1
Corson, SD
High HazardKrosch Dam; Victor 2
Sioux, ND
Low Hazard 11 ftRichard Glines
Corson, SD
Significant Hazard 39 ftMcgee Dam
Corson, SD
Low Hazard 21 ftKrumm Dam
Corson, SD
Low Hazard 37 ftFrequently Asked Questions
What is the hazard classification of Henry Holwenger?
Henry Holwenger 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 Henry Holwenger?
Henry Holwenger is owned by HENRY HOLWENGER (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Henry Holwenger built?
Henry Holwenger was completed in 1940, making it 86 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 Henry Holwenger?
Henry Holwenger 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 Henry Holwenger?
Henry Holwenger has a dam height of 19 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.