Three Mile River #1 Dam
Key Takeaway
Three Mile River #1 Dam is classified as significant hazard in Massachusetts. It was completed in 1943 and is 83 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 13 ft (taller than 39.5% in MA) |
| Dam Length | 950 ft |
| Dam Type | Rockfill |
| Max Storage | 480 acre-ft |
| Normal Storage | 264 acre-ft |
| Surface Area | 1 acres |
| Drainage Area | 76 sq mi |
| Year Completed | 1943 (83 years old) |
| NID ID | MA03082 |
Safety Information
No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
CHRISTINA & DEAN RODRIQUES
Private
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Significant Hazard 13 ftFrequently Asked Questions
What is the hazard classification of Three Mile River #1 Dam?
Three Mile River #1 Dam is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Three Mile River #1 Dam?
Three Mile River #1 Dam is owned by CHRISTINA & DEAN RODRIQUES (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Three Mile River #1 Dam built?
Three Mile River #1 Dam was completed in 1943, making it 83 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 Three Mile River #1 Dam?
Three Mile River #1 Dam serves the following purposes: Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Three Mile River #1 Dam?
Three Mile River #1 Dam has a dam height of 13 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 Three Mile River #1 Dam last inspected?
Three Mile River #1 Dam was last inspected on March 9, 2017. Inspection dates indicate when a formal review occurred, not the results of that inspection.