Spillway Dam At Neponset St.

EAST BRANCH NEPONSET RIVER· Norfolk, Massachusetts· Masonry· 12 ft tall
Significant Hazard Recreation State Government

Key Takeaway

Spillway Dam At Neponset St. is classified as significant hazard in Massachusetts. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 12 ft (taller than 32.1% in MA)
Dam Length60 ft
Dam TypeMasonry
Max Storage15 acre-ft
Normal Storage12 acre-ft
Surface Area4 acres
Drainage Area29 sq mi
NID IDMA03106

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: November 2, 2012
State Regulated: Yes
Regulatory Agency: DEPARTMENT OF CONSERVATION AND RECREATION

Ownership

MBTA - MA BAY TRANSIT AUTHORITY

State Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Spillway Dam At Neponset St.?

Spillway Dam At Neponset St. 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 Spillway Dam At Neponset St.?

Spillway Dam At Neponset St. is owned by MBTA - MA BAY TRANSIT AUTHORITY (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

What is the primary purpose of Spillway Dam At Neponset St.?

Spillway Dam At Neponset St. 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 Spillway Dam At Neponset St.?

Spillway Dam At Neponset St. 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.

When was Spillway Dam At Neponset St. last inspected?

Spillway Dam At Neponset St. was last inspected on November 2, 2012. 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.