Ladd'S Mill

North Branch Winooski River· Washington, Vermont· Built 1928· Concrete· 21 ft tall
Low Hazard Hydroelectric Private

Key Takeaway

Ladd'S Mill is classified as low hazard in Vermont. It was completed in 1928 and is 98 years old. Its primary use is hydroelectric.

Physical Details

Dam Height 21 ft (taller than 57.9% in VT)
Dam Length80 ft
Dam TypeConcrete
Normal Storage68 acre-ft
Surface Area9 acres
Drainage Area47 sq mi
Max Discharge800 cfs
Year Completed1928 (98 years old)
NID IDVT00170

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: May 30, 2019
State Regulated: No

Ownership

Worcester Hydro Company, Inc.

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Ladd'S Mill?

Ladd'S Mill 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 Ladd'S Mill?

Ladd'S Mill is owned by Worcester Hydro Company, Inc. (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Ladd'S Mill built?

Ladd'S Mill was completed in 1928, making it 98 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 Ladd'S Mill?

Ladd'S Mill 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 Ladd'S Mill?

Ladd'S Mill has a dam height of 21 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 Ladd'S Mill last inspected?

Ladd'S Mill was last inspected on May 30, 2019. 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.