Stillwater Dam

PLYMPTON BROOK· Franklin, Massachusetts· Earth· 17 ft tall

Significant Hazard Fish And Wildlife Pond Recreation Private

Key Takeaway

Stillwater Dam is classified as significant hazard in Massachusetts. Its primary use is fish and wildlife pond. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height	17 ft (taller than 60.3% in MA)
Dam Length	50 ft
Dam Type	Earth
Max Storage	100 acre-ft
Normal Storage	70 acre-ft

Surface Area	8 acres
Drainage Area	1 sq mi
NID ID	MA00517

Safety Information

Significant Hazard

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?

Emergency Action Plan: No

Last Inspection: September 22, 2017

State Regulated: Yes

Regulatory Agency: DEPARTMENT OF CONSERVATION AND RECREATION

Ownership

LGW HOLDINGS, LLC

Private

Nearby Dams

Mcavoy Pond Dam

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Fiske Pond Dam

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Lake Wyola Dam

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Ruggles Pond Dam

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Dudleyville Pond Dam

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Bowen's Pond Dam

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Northfield Mt. - Main Dam

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High Hazard 145 ft

Vorces Pond Dam

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Significant Hazard 12 ft

Frequently Asked Questions

What is the hazard classification of Stillwater Dam?

Stillwater 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 Stillwater Dam?

Stillwater Dam is owned by LGW HOLDINGS, LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

What is the primary purpose of Stillwater Dam?

Stillwater Dam serves the following purposes: Fish And Wildlife Pond, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Stillwater Dam?

Stillwater Dam 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 Stillwater Dam last inspected?

Stillwater Dam was last inspected on September 22, 2017. Inspection dates indicate when a formal review occurred, not the results of that inspection.

Data from the National Inventory of Dams (NID) maintained by the US Army Corps of Engineers. Dam conditions may have changed since the last update. This site is not affiliated with USACE. Do not use for emergency planning — contact your local dam safety program.