Mechanicsville

French River· Windham, Connecticut· Built 1900· Masonry· 18 ft tall
Low Hazard Hydroelectric Private

Key Takeaway

Mechanicsville is classified as low hazard in Connecticut. It was completed in 1900 and is 126 years old. Its primary use is hydroelectric.

Physical Details

Dam Height 18 ft (taller than 67.8% in CT)
Dam Length420 ft
Dam TypeMasonry
Max Storage330 acre-ft
Normal Storage330 acre-ft
Surface Area48 acres
Drainage Area112 sq mi
Max Discharge10,000 cfs
Year Completed1900 (126 years old)
NID IDCT00182

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
Last Inspection: July 10, 2018
State Regulated: No

Ownership

Saywatt Hydroelectric, LLC

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Mechanicsville?

Mechanicsville 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 Mechanicsville?

Mechanicsville is owned by Saywatt Hydroelectric, LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Mechanicsville built?

Mechanicsville was completed in 1900, making it 126 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 Mechanicsville?

Mechanicsville serves the following purposes: Hydroelectric. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Mechanicsville?

Mechanicsville 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 Mechanicsville last inspected?

Mechanicsville was last inspected on July 10, 2018. 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.