Union Gas
Key Takeaway
Union Gas is classified as low hazard in Maine. It was completed in 1924 and is 102 years old. Its primary use is hydroelectric.
Physical Details
| Dam Height | 28 ft (taller than 86.9% in ME) |
| Dam Length | 343 ft |
| Dam Type | Masonry |
| Max Storage | 600 acre-ft |
| Normal Storage | 600 acre-ft |
| Surface Area | 25 acres |
| Drainage Area | 207 sq mi |
| Max Discharge | 2,460 cfs |
| Year Completed | 1924 (102 years old) |
| NID ID | ME00102 |
Safety Information
No probable loss of human life and low economic/environmental losses expected.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
Messalonskee Stream Hydro, LLC
Private
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High Hazard 14 ftFrequently Asked Questions
What is the hazard classification of Union Gas?
Union Gas is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Union Gas?
Union Gas is owned by Messalonskee Stream Hydro, LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Union Gas built?
Union Gas was completed in 1924, making it 102 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.
What is the primary purpose of Union Gas?
Union Gas serves the following purposes: Hydroelectric, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Union Gas?
Union Gas has a dam height of 28 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.
When was Union Gas last inspected?
Union Gas was last inspected on August 31, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.