Mcginnis Evaporation
Mcginnis Evaporation is an earth dam located in Sublette County, Wyoming, built in 1984. It carries a Low hazard potential classification and has a fair condition assessment.
About Mcginnis Evaporation
Mcginnis Evaporation is a dam in Sublette, Wyoming. The dam is owned by Exxon Mobil Production Company (private). It impounds the Offstream.
The dam stands 24 feet tall and stretches 456 feet across, creates a reservoir covering 5 acres, and has a maximum storage capacity of 64 acre-feet. Completed in 1984, the structure is 42 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. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 05/26/2021.
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Location
| State | Wyoming |
| County | Sublette |
| River/Stream | Offstream |
| Coordinates | 42.36420, -110.32580 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 24 ft |
| Dam Height | 24 ft |
| Dam Length | 456 ft |
| Year Completed | 1984 (42 years old) |
Storage & Hydraulics
| NID Storage | 64 acre-ft |
| Max Storage | 64 acre-ft |
| Normal Storage | 39 acre-ft |
| Surface Area | 5 acres |
| Spillway Type | None |
Ownership & Safety
| Purpose | Other |
| Owner | EXXON MOBIL PRODUCTION COMPANY |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 05/26/2021 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY01759 |
| Federal ID | WY01759 |
| More Info | State Dam Safety Program |