Howland
Key Takeaway
Howland is classified as low hazard in Maine. It was completed in 1916 and is 110 years old. Its primary use is hydroelectric.
Physical Details
| Dam Height | 17 ft (taller than 65.2% in ME) |
| Dam Length | 660 ft |
| Dam Type | Concrete |
| Max Storage | 3.4K acre-ft |
| Normal Storage | 3.4K acre-ft |
| Surface Area | 270 acres |
| Drainage Area | 1,500 sq mi |
| Max Discharge | 42,525 cfs |
| Year Completed | 1916 (110 years old) |
| NID ID | ME00155 |
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
Penobscot River Restoration Trust
Private
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What is the hazard classification of Howland?
Howland 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 Howland?
Howland is owned by Penobscot River Restoration Trust (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Howland built?
Howland was completed in 1916, making it 110 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 Howland?
Howland 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 Howland?
Howland has a dam height of 17 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 Howland last inspected?
Howland was last inspected on August 26, 2015. Inspection dates indicate when a formal review occurred, not the results of that inspection.