Longley Dam is an earth dam located in Dewey County, Oklahoma, built in 1985. It carries a Low hazard potential classification.
Dam profile
NID height · 34 ft34 ft tall and 554 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 Longley Dam
The primary purpose of Longley Dam 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 Tracy Longley (private). It impounds the Tr-canadian River near Camargo.
The dam stands 34 feet tall and stretches 554 feet across, creates a reservoir covering 1 acres, has a maximum storage capacity of 39 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1985, the structure is 41 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 06/10/2005. That was over 21 years ago.
At 34 feet, this dam is taller than 78% of dams nationwide.
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Location
| State | Oklahoma |
| County | Dewey |
| Nearest City | Camargo |
| River/Stream | Tr-canadian River |
| Coordinates | 36.07942, -99.25739 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 34 ft |
| Dam Height | 34 ft |
| Dam Length | 554 ft |
| Year Completed | 1985 (41 years old) |
Storage & Hydraulics
| NID Storage | 39 acre-ft |
| Max Storage | 39 acre-ft |
| Normal Storage | 7 acre-ft |
| Surface Area | 1 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 136 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Tracy Longley |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 06/10/2005 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OK00048 |
| Federal ID | OK00048 |
| More Info | State Dam Safety Program |