Oknoname 111040 is an earth dam located in Okmulgee County, Oklahoma, built in 1940. It carries a Low hazard potential classification.
Dam profile
NID height · 35 ft35 ft tall and 3,300 ft long, taller than 80% 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 Oknoname 111040
Oknoname 111040 is a dam in Okmulgee, Oklahoma. The dam is owned by Joseph Mcnac (private). It impounds the Tr-coal Creek near Henryetta.
The dam stands 35 feet tall and stretches 3,300 feet across, creates a reservoir covering 1 acres, and has a maximum storage capacity of 50 acre-feet. Completed in 1940, the structure is well-established, with more than 75 years of service.
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 08/18/2011. That was over 15 years ago.
At 35 feet, this dam is taller than 80% of dams nationwide.
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Location
| State | Oklahoma |
| County | Okmulgee |
| Nearest City | Henryetta |
| River/Stream | Tr-coal Creek |
| Coordinates | 35.42221, -95.98590 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 35 ft |
| Dam Height | 35 ft |
| Dam Length | 3,300 ft |
| Year Completed | 1940 (86 years old) |
Storage & Hydraulics
| NID Storage | 50 acre-ft |
| Max Storage | 50 acre-ft |
| Normal Storage | 25 acre-ft |
| Surface Area | 1 acres |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Other |
| Owner | Joseph Mcnac |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 08/18/2011 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OK12302 |
| Federal ID | OK12302 |
| More Info | State Dam Safety Program |