Cowden is an earth dam located in McIntosh County, Oklahoma, built in 1963. It carries a Low hazard potential classification.
Dam profile
NID height · 34 ft34 ft tall and 1,200 ft long, taller than 78% 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 Cowden
The primary purpose of Cowden is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Tiger Mountain Ranch (private). It impounds the Tr-clear Creek near Lenna.
The dam stands 34 feet tall and stretches 1,200 feet across, creates a reservoir covering 15 acres, and has a maximum storage capacity of 141 acre-feet. Completed in 1963, 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 12/03/2010. That was over 15 years ago.
At 34 feet, this dam is taller than 78% of dams nationwide.
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Location
| State | Oklahoma |
| County | McIntosh |
| Nearest City | Lenna |
| River/Stream | Tr-clear Creek |
| Coordinates | 35.42249, -95.86649 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 34 ft |
| Dam Height | 34 ft |
| Dam Length | 1,200 ft |
| Year Completed | 1963 (63 years old) |
Storage & Hydraulics
| NID Storage | 141 acre-ft |
| Max Storage | 141 acre-ft |
| Normal Storage | 45 acre-ft |
| Surface Area | 15 acres |
| Max Discharge | 2,646 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Tiger Mountain Ranch |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 12/03/2010 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OK02313 |
| Federal ID | OK02313 |
| More Info | State Dam Safety Program |