Trojan Lake Dam

TR-WILLOWEMOC CREEK· Sullivan, New York· Built 1930· Earth· 16 ft tall
Low Hazard Recreation Private

Key Takeaway

Trojan Lake Dam is classified as low hazard in New York. It was completed in 1930 and is 96 years old. Its primary use is recreation.

Physical Details

Dam Height 16 ft (taller than 42.9% in NY)
Dam Length145 ft
Dam TypeEarth
Max Storage137 acre-ft
Normal Storage104 acre-ft
Surface Area26 acres
Drainage Area1 sq mi
Year Completed1930 (96 years old)
NID IDNY00994

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 11, 2009
State Regulated: Yes
Regulatory Agency: NYS DEC

Ownership

SPARTAN HILLS INC

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Trojan Lake Dam?

Trojan 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 Trojan Lake Dam?

Trojan Lake Dam is owned by SPARTAN HILLS INC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Trojan Lake Dam built?

Trojan Lake Dam was completed in 1930, making it 96 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 Trojan Lake Dam?

Trojan 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 Trojan Lake Dam?

Trojan Lake 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 Trojan Lake Dam last inspected?

Trojan Lake Dam was last inspected on June 11, 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.