Allen Janzen
Key Takeaway
Allen Janzen is classified as low hazard in Oklahoma. It was completed in 1990 and is 36 years old. Its primary use is other.
Physical Details
| Dam Height | 27 ft (taller than 43% in OK) |
| Dam Length | 60 ft |
| Dam Type | Earth |
| Max Storage | 182 acre-ft |
| Normal Storage | 12 acre-ft |
| Drainage Area | 2 sq mi |
| Max Discharge | 781 cfs |
| Year Completed | 1990 (36 years old) |
| NID ID | OK21704 |
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
RODERICK W JONES
Private
Nearby Dams
Pyeatt Jh
Custer, OK
Low Hazard 29 ftWoldridge
Custer, OK
Low Hazard 34 ftWoldridge
Custer, OK
Low Hazard 26 ftMiller James
Custer, OK
Low Hazard 25 ftEyster John
Custer, OK
Low Hazard 25 ftRex Hoffman Gss 1
Custer, OK
Low Hazard 34 ftRick Webb Gss 4
Custer, OK
Low Hazard 36 ftNola Christensen
Custer, OK
Low Hazard 25 ftFrequently Asked Questions
What is the hazard classification of Allen Janzen?
Allen Janzen 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 Allen Janzen?
Allen Janzen is owned by RODERICK W JONES (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Allen Janzen built?
Allen Janzen was completed in 1990, making it 36 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 Allen Janzen?
Allen Janzen serves the following purposes: Other. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Allen Janzen?
Allen Janzen 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.
When was Allen Janzen last inspected?
Allen Janzen was last inspected on July 25, 2011. Inspection dates indicate when a formal review occurred, not the results of that inspection.