Unknown
Key Takeaway
Unknown is classified as low hazard in Oklahoma. It was completed in 1956 and is 70 years old. Its primary use is recreation.
Physical Details
| Dam Height | 40 ft (taller than 83.4% in OK) |
| Dam Length | 250 ft |
| Dam Type | Earth |
| Max Storage | 60 acre-ft |
| Normal Storage | 30 acre-ft |
| Surface Area | 1 acres |
| Max Discharge | 2,000 cfs |
| Year Completed | 1956 (70 years old) |
| NID ID | OK13054 |
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
STROM FAMILY TRUST
Private
Nearby Dams
SCS-Cotton-Coon-Mission Cr Site-004
Osage, OK
Low Hazard 40 ftHulah Dam
Osage, OK
High Hazard 94 ftOknoname 30161
Osage, OK
Low Hazard 31 ftSCS-Cotton-Coon-Mission Cr Site-002
Osage, OK
Low Hazard 54 ftOknoname 113011
Osage, OK
Low Hazard 30 ftOknoname 113005
Osage, OK
Low Hazard 30 ftOknoname 113008
Osage, OK
Low Hazard 40 ftOknoname 113003
Osage, OK
Low Hazard 35 ftFrequently Asked Questions
What is the hazard classification of Unknown?
Unknown 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 Unknown?
Unknown is owned by STROM FAMILY TRUST (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Unknown built?
Unknown 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 Unknown?
Unknown 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 Unknown?
Unknown has a dam height of 40 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 Unknown last inspected?
Unknown was last inspected on June 24, 2003. Inspection dates indicate when a formal review occurred, not the results of that inspection.