Lilly Pond Dam

TR-LITTLE BEAVER KILL· Sullivan, New York· Built 1922· Earth· 8 ft tall
Low Hazard Water Supply Local Government

Key Takeaway

Lilly Pond Dam is classified as low hazard in New York. It was completed in 1922 and is 104 years old. Its primary use is water supply.

Physical Details

Dam Height 8 ft (taller than 5.1% in NY)
Dam Length185 ft
Dam TypeEarth
Max Storage210 acre-ft
Normal Storage210 acre-ft
Surface Area78 acres
Year Completed1922 (104 years old)
NID IDNY00666

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: October 23, 2014
State Regulated: Yes
Regulatory Agency: NYS DEC

Ownership

VILLAGE OF LIBERTY

Local Government

Nearby Dams

Paramount Pond Dam

Sullivan, NY

Significant Hazard 13 ft

Tanzman Lake Dam

Sullivan, NY

Significant Hazard 17 ft

Camp Gan Israel Pond Dam

Sullivan, NY

Significant Hazard 15 ft

Nimrod Lake Dam

Sullivan, NY

Significant Hazard 12 ft

Fred Denman Lake Dam

Sullivan, NY

Low Hazard 12 ft

Knickerbocker Pond Dam

Sullivan, NY

Low Hazard 10 ft

Trojan Lake Dam

Sullivan, NY

Low Hazard 16 ft

Orchard Lake Dam

Sullivan, NY

Significant Hazard 16 ft

Frequently Asked Questions

What is the hazard classification of Lilly Pond Dam?

Lilly Pond 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 Lilly Pond Dam?

Lilly Pond Dam is owned by VILLAGE OF LIBERTY (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Lilly Pond Dam built?

Lilly Pond Dam was completed in 1922, making it 104 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 Lilly Pond Dam?

Lilly Pond Dam serves the following purposes: Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Lilly Pond Dam?

Lilly Pond Dam has a dam height of 8 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 Lilly Pond Dam last inspected?

Lilly Pond Dam was last inspected on October 23, 2014. 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.