Thompson Mg is an earth dam located in Okmulgee County, Oklahoma, built in 1960. It carries a Low hazard potential classification.
Dam profile
NID height · 31 ft31 ft tall and 530 ft long, taller than 72% 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 Thompson Mg
Thompson Mg is a dam in Okmulgee, Oklahoma. The dam is owned by Bluestem Valley Ranch Ltd C/o D Gallemore (private). It impounds the Tr-browns Creek near Edna.
The dam stands 31 feet tall and stretches 530 feet across, creates a reservoir covering 2 acres, and has a maximum storage capacity of 120 acre-feet. Completed in 1960, 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 08/17/2011. That was over 15 years ago.
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Location
| State | Oklahoma |
| County | Okmulgee |
| Nearest City | Edna |
| River/Stream | Tr-browns Creek |
| Coordinates | 35.79271, -96.17762 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 31 ft |
| Dam Height | 31 ft |
| Dam Length | 530 ft |
| Year Completed | 1960 (66 years old) |
Storage & Hydraulics
| NID Storage | 120 acre-ft |
| Max Storage | 120 acre-ft |
| Normal Storage | 60 acre-ft |
| Surface Area | 2 acres |
| Max Discharge | 510 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Other |
| Owner | Bluestem Valley Ranch Ltd C/o D Gallemore |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 08/17/2011 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OK12286 |
| Federal ID | OK12286 |
| More Info | State Dam Safety Program |