Koehn is an earth dam located in Major County, Oklahoma, built in 1960. It carries a Low hazard potential classification.
Dam profile
NID height · 25 ft25 ft tall and 200 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 Major, Oklahoma. The dam is owned by Vernard Koehn (private). It impounds the Tr-indian Cr near Ringwood.
The dam stands 25 feet tall and stretches 200 feet across, creates a reservoir covering 2 acres, and has a maximum storage capacity of 125 acre-feet. Completed in 1960, the structure is well into its service life at over 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. The most recent inspection on record was 08/11/2009. That was over 17 years ago.
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Location
| State | Oklahoma |
| County | Major |
| Nearest City | Ringwood |
| River/Stream | Tr-indian Cr |
| Coordinates | 36.42393, -98.21964 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Height | 25 ft |
| Dam Length | 200 ft |
| Year Completed | 1960 (66 years old) |
Storage & Hydraulics
| NID Storage | 125 acre-ft |
| Max Storage | 125 acre-ft |
| Normal Storage | 65 acre-ft |
| Surface Area | 2 acres |
| Max Discharge | 418 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Other |
| Owner | Vernard Koehn |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 08/11/2009 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OK13187 |
| Federal ID | OK13187 |
| More Info | State Dam Safety Program |