Coppedge Jack is an earth dam located in Hughes County, Oklahoma, built in 1977. It carries a Low hazard potential classification.
Dam profile
NID height · 35 ft35 ft tall and 230 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 Coppedge Jack
Coppedge Jack is a dam in Hughes, Oklahoma. The dam is owned by Coppedge Family Farms LP (private). It impounds the Tr.canadian River near Calvin.
The dam stands 35 feet tall and stretches 230 feet across, and has a maximum storage capacity of 350 acre-feet. Completed in 1977, the structure is 49 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 08/09/2011. 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 | Hughes |
| Nearest City | Calvin |
| River/Stream | Tr.canadian River |
| Coordinates | 34.99358, -96.29234 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 35 ft |
| Dam Height | 35 ft |
| Dam Length | 230 ft |
| Year Completed | 1977 (49 years old) |
Storage & Hydraulics
| NID Storage | 350 acre-ft |
| Max Storage | 350 acre-ft |
| Normal Storage | 270 acre-ft |
| Max Discharge | 2,325 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Other |
| Owner | Coppedge Family Farms LP |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 08/09/2011 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OK13137 |
| Federal ID | OK13137 |
| More Info | State Dam Safety Program |