Oknoname 113121 is an earth dam located in Osage County, Oklahoma, built in 1940. It carries a Low hazard potential classification.
Dam profile
NID height · 30 ft30 ft tall and 180 ft long, taller than 68% 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 113121
Oknoname 113121 is a dam in Osage, Oklahoma. The dam is owned by The Nature Conservancy (private). It impounds the Tr-sand Cr near Pawhuska.
The dam stands 30 feet tall and stretches 180 feet across, creates a reservoir covering 3 acres, and has a maximum storage capacity of 240 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 09/06/2011. That was over 15 years ago.
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Location
| State | Oklahoma |
| County | Osage |
| Nearest City | Pawhuska |
| River/Stream | Tr-sand Cr |
| Coordinates | 36.85416, -96.42269 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Dam Length | 180 ft |
| Year Completed | 1940 (86 years old) |
Storage & Hydraulics
| NID Storage | 240 acre-ft |
| Max Storage | 240 acre-ft |
| Normal Storage | 18 acre-ft |
| Surface Area | 3 acres |
| Max Discharge | 45 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Other |
| Owner | The Nature Conservancy |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 09/06/2011 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OK12934 |
| Federal ID | OK12934 |
| More Info | State Dam Safety Program |