Koehn is an earth dam located in Dewey County, Oklahoma, built in 1976. It carries a Low hazard potential classification.
Dam profile
NID height · 25 ft25 ft tall and 98 ft long, taller than 50% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Koehn
Koehn is a dam in Dewey, Oklahoma. The dam is owned by Darrell Koehn (private). It impounds the Unnamed near Putnam.
The dam stands 25 feet tall and stretches 98 feet across, creates a reservoir covering 2 acres, has a maximum storage capacity of 30 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1976, the structure is 50 years old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life.
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Location
| State | Oklahoma |
| County | Dewey |
| Nearest City | Putnam |
| River/Stream | Unnamed |
| Coordinates | 35.86904, -99.02329 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Height | 25 ft |
| Dam Length | 98 ft |
| Year Completed | 1976 (50 years old) |
Storage & Hydraulics
| NID Storage | 30 acre-ft |
| Max Storage | 30 acre-ft |
| Normal Storage | 16 acre-ft |
| Surface Area | 2 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Other |
| Owner | Darrell Koehn |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OK83731 |
| Federal ID | OK83731 |
| More Info | State Dam Safety Program |