Pine Island Lake Dam

TRIBUTARY OF NORTH BRANCH MANHAN RIVER· Hampshire, Massachusetts· Built 1920· Earth· 25 ft tall
High Hazard Recreation Private

Key Takeaway

Pine Island Lake Dam is classified as high hazard in Massachusetts. It was completed in 1920 and is 106 years old. Its primary use is recreation. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.

Physical Details

Dam Height 25 ft (taller than 79.2% in MA)
Dam Length80 ft
Dam TypeEarth
Max Storage1.1K acre-ft
Normal Storage839 acre-ft
Surface Area71 acres
Drainage Area1 sq mi
Year Completed1920 (106 years old)
NID IDMA00595

Safety Information

High Hazard

Loss of human life is likely if the dam fails.

Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?

Emergency Action Plan: Yes
Last Inspection: July 25, 2016
State Regulated: Yes
Regulatory Agency: DEPARTMENT OF CONSERVATION AND RECREATION

Ownership

PINE ISLAND LAKE, INC.

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Pine Island Lake Dam?

Pine Island Lake Dam is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Pine Island Lake Dam?

Pine Island Lake Dam is owned by PINE ISLAND LAKE, INC. (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Pine Island Lake Dam built?

Pine Island Lake Dam was completed in 1920, making it 106 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 Pine Island Lake Dam?

Pine Island Lake 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 Pine Island Lake Dam?

Pine Island Lake Dam has a dam height of 25 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 Pine Island Lake Dam last inspected?

Pine Island Lake Dam was last inspected on July 25, 2016. 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.