Upper Glen Reservoir Dam

GLEN BROOK· Franklin, Massachusetts· Concrete· 59 ft tall
Significant Hazard Water Supply Local Government

Key Takeaway

Upper Glen Reservoir Dam is classified as significant hazard in Massachusetts. Its primary use is water supply. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 59 ft (taller than 96.8% in MA)
Dam Length240 ft
Dam TypeConcrete
Max Storage143 acre-ft
Normal Storage92 acre-ft
Surface Area7 acres
Drainage Area5 sq mi
NID IDMA00049

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: August 18, 2016
State Regulated: Yes
Regulatory Agency: DEPARTMENT OF CONSERVATION AND RECREATION

Ownership

TOWN OF GREENFIELD, OFFICE OF THE MAYOR

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Upper Glen Reservoir Dam?

Upper Glen Reservoir 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 Upper Glen Reservoir Dam?

Upper Glen Reservoir Dam is owned by TOWN OF GREENFIELD, OFFICE OF THE MAYOR (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

What is the primary purpose of Upper Glen Reservoir Dam?

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

How tall is Upper Glen Reservoir Dam?

Upper Glen Reservoir Dam has a dam height of 59 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 Upper Glen Reservoir Dam last inspected?

Upper Glen Reservoir Dam was last inspected on August 18, 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.