Truesdale Lake Dam

TR-WACCABUC RIVER· Westchester, New York· Built 1925· Earth· 14 ft tall
Low Hazard Recreation Local Government

Key Takeaway

Truesdale Lake Dam is classified as low hazard in New York. It was completed in 1925 and is 101 years old. Its primary use is recreation.

Physical Details

Dam Height 14 ft (taller than 33.5% in NY)
Dam Length200 ft
Dam TypeEarth
Max Storage720 acre-ft
Normal Storage400 acre-ft
Surface Area83 acres
Year Completed1925 (101 years old)
NID IDNY14813

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: June 19, 2009
State Regulated: Yes
Regulatory Agency: NYS DEC

Ownership

TOWN OF LEWISBORO;TRUESDALE LAKE ASSOCIATION

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Truesdale Lake Dam?

Truesdale Lake 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 Truesdale Lake Dam?

Truesdale Lake Dam is owned by TOWN OF LEWISBORO;TRUESDALE LAKE ASSOCIATION (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Truesdale Lake Dam built?

Truesdale Lake Dam was completed in 1925, making it 101 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 Truesdale Lake Dam?

Truesdale Lake 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 Truesdale Lake Dam?

Truesdale Lake Dam has a dam height of 14 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 Truesdale Lake Dam last inspected?

Truesdale Lake Dam was last inspected on June 19, 2009. 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.