Watsons Waste Weir Dam

Johnson Cr· Niagara, New York· Built 1918· Concrete· 16 ft tall
Low Hazard Navigation State Government

Key Takeaway

Watsons Waste Weir Dam is classified as low hazard in New York. It was completed in 1918 and is 108 years old. Its primary use is navigation.

Physical Details

Dam Height 16 ft (taller than 42.9% in NY)
Dam Length75 ft
Dam TypeConcrete
Max Storage10.5K acre-ft
Normal Storage8.6K acre-ft
Surface Area890 acres
Drainage Area2 sq mi
Max Discharge764 cfs
Year Completed1918 (108 years old)
NID IDNY17189

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: November 10, 2020
State Regulated: Yes
Regulatory Agency: NYS DEC

Ownership

New York State Canal Corporation

State Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Watsons Waste Weir Dam?

Watsons Waste Weir Dam 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 Watsons Waste Weir Dam?

Watsons Waste Weir Dam is owned by New York State Canal Corporation (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Watsons Waste Weir Dam built?

Watsons Waste Weir Dam was completed in 1918, making it 108 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 Watsons Waste Weir Dam?

Watsons Waste Weir Dam serves the following purposes: Navigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Watsons Waste Weir Dam?

Watsons Waste Weir Dam has a dam height of 16 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 Watsons Waste Weir Dam last inspected?

Watsons Waste Weir Dam was last inspected on November 10, 2020. 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.