Atwood Upper Reservoir #2 Dam

TRIBUTARY OF WEWEANTIC RIVER· Plymouth, Massachusetts· Built 1937· Gravity· 12 ft tall
Low Hazard Irrigation Private

Key Takeaway

Atwood Upper Reservoir #2 Dam is classified as low hazard in Massachusetts. It was completed in 1937 and is 89 years old. Its primary use is irrigation.

Physical Details

Dam Height 12 ft (taller than 32.1% in MA)
Dam Length17,000 ft
Dam TypeGravity
Max Storage4.3K acre-ft
Normal Storage1.4K acre-ft
Drainage Area408,000 sq mi
Year Completed1937 (89 years old)
NID IDMA00083

Safety Information

Low Hazard

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?

Emergency Action Plan: No
State Regulated: Yes
Regulatory Agency: DEPARTMENT OF CONSERVATION AND RECREATION

Ownership

CRANEBERRY CRANBERRY, LLC

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Atwood Upper Reservoir #2 Dam?

Atwood Upper Reservoir #2 Dam 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 Atwood Upper Reservoir #2 Dam?

Atwood Upper Reservoir #2 Dam is owned by CRANEBERRY CRANBERRY, LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Atwood Upper Reservoir #2 Dam built?

Atwood Upper Reservoir #2 Dam was completed in 1937, making it 89 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 Atwood Upper Reservoir #2 Dam?

Atwood Upper Reservoir #2 Dam serves the following purposes: Irrigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Atwood Upper Reservoir #2 Dam?

Atwood Upper Reservoir #2 Dam has a dam height of 12 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.

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.