Hoyle and Johnson
Key Takeaway
Hoyle and Johnson is classified as low hazard in Wisconsin. It was completed in 1974 and is 52 years old. Its primary use is recreation.
Physical Details
| Dam Height | 11 ft (taller than 24.3% in WI) |
| Dam Length | 900 ft |
| Dam Type | Earth |
| Max Storage | 100 acre-ft |
| Normal Storage | 53 acre-ft |
| Surface Area | 12 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 270 cfs |
| Year Completed | 1974 (52 years old) |
| NID ID | WI00996 |
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
Helms, Tom & Sherry
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Hoyle and Johnson?
Hoyle and Johnson 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 Hoyle and Johnson?
Hoyle and Johnson is owned by Helms, Tom & Sherry (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Hoyle and Johnson built?
Hoyle and Johnson was completed in 1974, making it 52 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 Hoyle and Johnson?
Hoyle and Johnson serves the following purposes: Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Hoyle and Johnson?
Hoyle and Johnson has a dam height of 11 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 Hoyle and Johnson last inspected?
Hoyle and Johnson was last inspected on January 7, 2014. Inspection dates indicate when a formal review occurred, not the results of that inspection.