Sullivan Lloyd is an earth dam located in Greer County, Oklahoma, built in 1945. It carries a Low hazard potential classification.
Dam profile
NID height · 25 ft25 ft tall and 430 ft long, taller than 50% 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 Sullivan Lloyd
Sullivan Lloyd is a dam in Greer, Oklahoma. The dam is owned by Wallace Mt Ranch & Farms LLC (private). It impounds the Tr-elm Fork Red Riv near Mangum.
The dam stands 25 feet tall and stretches 430 feet across, creates a reservoir covering 4 acres, and has a maximum storage capacity of 50 acre-feet. Completed in 1945, 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 11/29/2010. That was over 15 years ago.
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Location
| State | Oklahoma |
| County | Greer |
| Nearest City | Mangum |
| River/Stream | Tr-elm Fork Red Riv |
| Coordinates | 34.87408, -99.39067 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Height | 25 ft |
| Dam Length | 430 ft |
| Year Completed | 1945 (81 years old) |
Storage & Hydraulics
| NID Storage | 50 acre-ft |
| Max Storage | 50 acre-ft |
| Normal Storage | 26 acre-ft |
| Surface Area | 4 acres |
| Max Discharge | 1,395 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Other |
| Owner | Wallace Mt Ranch & Farms LLC |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 11/29/2010 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OK21151 |
| Federal ID | OK21151 |
| More Info | State Dam Safety Program |