Cobb J is an earth dam located in Roger Mills County, Oklahoma, built in 1955. It carries a Low hazard potential classification.
Dam profile
NID height · 20 ft20 ft tall and 610 ft long. 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 Cobb J
Cobb J is a dam in Roger Mills, Oklahoma. The dam is owned by Richard E Cobb (private). It impounds the Wild Horse Creek near Strong City.
The dam stands 20 feet tall and stretches 610 feet across, creates a reservoir covering 2 acres, and has a maximum storage capacity of 60 acre-feet. Completed in 1955, 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 11/29/2010. That was over 15 years ago.
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Location
| State | Oklahoma |
| County | Roger Mills |
| Nearest City | Strong City |
| River/Stream | Wild Horse Creek |
| Coordinates | 35.77389, -99.64104 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 610 ft |
| Year Completed | 1955 (71 years old) |
Storage & Hydraulics
| NID Storage | 60 acre-ft |
| Max Storage | 60 acre-ft |
| Normal Storage | 28 acre-ft |
| Surface Area | 2 acres |
| Max Discharge | 1,840 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Other |
| Owner | Richard E Cobb |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 11/29/2010 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OK21002 |
| Federal ID | OK21002 |
| More Info | State Dam Safety Program |