Treasure Lake Dam

TR-NEVERSINK RIVER· Sullivan, New York· Built 1911· Earth· 7 ft tall
Significant Hazard Recreation Private

Key Takeaway

Treasure Lake Dam is classified as significant hazard in New York. It was completed in 1911 and is 115 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 7 ft (taller than 0.9% in NY)
Dam Length100 ft
Dam TypeEarth
Max Storage345 acre-ft
Normal Storage198 acre-ft
Surface Area43 acres
Drainage Area0 sq mi
Year Completed1911 (115 years old)
NID IDNY01200

Safety Information

Significant Hazard

No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.

Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?

Emergency Action Plan: Yes
Last Inspection: June 18, 2019
State Regulated: Yes
Regulatory Agency: NYS DEC

Ownership

EMERALD GREEN PROPERTY OWNERS ASSOCIATION

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Treasure Lake Dam?

Treasure Lake Dam is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Treasure Lake Dam?

Treasure Lake Dam is owned by EMERALD GREEN PROPERTY OWNERS ASSOCIATION (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Treasure Lake Dam built?

Treasure Lake Dam was completed in 1911, making it 115 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 Treasure Lake Dam?

Treasure 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 Treasure Lake Dam?

Treasure Lake Dam has a dam height of 7 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 Treasure Lake Dam last inspected?

Treasure Lake Dam was last inspected on June 18, 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.