Maupus Pond Dam

EAST RIVER TRIB· New Haven, Connecticut· Built 1920· Masonry· 18 ft tall
Significant Hazard Recreation Private

Key Takeaway

Maupus Pond Dam is classified as significant hazard in Connecticut. It was completed in 1920 and is 106 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 18 ft (taller than 67.8% in CT)
Dam Length100 ft
Dam TypeMasonry
Max Storage54 acre-ft
Normal Storage54 acre-ft
Surface Area6 acres
Drainage Area0 sq mi
Max Discharge5 cfs
Year Completed1920 (106 years old)
NID IDCT00409

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: April 14, 1988
State Regulated: Yes
Regulatory Agency: DEEP

Ownership

CT Light and Power Co;Maupus Lake LLC

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Maupus Pond Dam?

Maupus Pond 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 Maupus Pond Dam?

Maupus Pond Dam is owned by CT Light and Power Co;Maupus Lake LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Maupus Pond Dam built?

Maupus Pond 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 Maupus Pond Dam?

Maupus Pond 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 Maupus Pond Dam?

Maupus Pond Dam has a dam height of 18 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 Maupus Pond Dam last inspected?

Maupus Pond Dam was last inspected on April 14, 1988. 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.