Matawa Lake Dam

TR-LITTLE BEAVER KILL· Sullivan, New York· Built 1949· Masonry· 22 ft tall
Low Hazard Water Supply Local Government

Key Takeaway

Matawa Lake Dam is classified as low hazard in New York. It was completed in 1949 and is 77 years old. Its primary use is water supply.

Physical Details

Dam Height 22 ft (taller than 63.7% in NY)
Dam Length120 ft
Dam TypeMasonry
Max Storage275 acre-ft
Normal Storage240 acre-ft
Surface Area26 acres
Max Discharge215 cfs
Year Completed1949 (77 years old)
NID IDNY00344

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: December 17, 2009
State Regulated: Yes
Regulatory Agency: NYS DEC

Ownership

LIVINGSTON MANOR WATER DISTRICT

Local Government

Nearby Dams

Lenape Lake Dam

Sullivan, NY

Low Hazard 20 ft

Fred Denman Lake Dam

Sullivan, NY

Low Hazard 12 ft

Nimrod Lake Dam

Sullivan, NY

Significant Hazard 12 ft

Triple L Lake Dam

Sullivan, NY

Significant Hazard 30 ft

Camp Gan Israel Pond Dam

Sullivan, NY

Significant Hazard 15 ft

Paramount Pond Dam

Sullivan, NY

Significant Hazard 13 ft

Trojan Lake Dam

Sullivan, NY

Low Hazard 16 ft

Tanzman Lake Dam

Sullivan, NY

Significant Hazard 17 ft

Frequently Asked Questions

What is the hazard classification of Matawa Lake Dam?

Matawa 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 Matawa Lake Dam?

Matawa Lake Dam is owned by LIVINGSTON MANOR WATER DISTRICT (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Matawa Lake Dam built?

Matawa Lake Dam was completed in 1949, making it 77 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 Matawa Lake Dam?

Matawa Lake 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 Matawa Lake Dam?

Matawa Lake Dam has a dam height of 22 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 Matawa Lake Dam last inspected?

Matawa Lake Dam was last inspected on December 17, 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.