Glenn Lake Dam

LYON BROOK· Chenango, New York· Built 1965· Earth· 43 ft tall

High Hazard Recreation Private

Key Takeaway

Glenn Lake Dam is classified as high hazard in New York. It was completed in 1965 and is 61 years old. Its primary use is recreation. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.

Physical Details

Dam Height	43 ft (taller than 89.9% in NY)
Dam Length	722 ft
Dam Type	Earth
Max Storage	516 acre-ft
Normal Storage	220 acre-ft

Surface Area	21 acres
Drainage Area	2 sq mi
Max Discharge	880 cfs
Year Completed	1965 (61 years old)
NID ID	NY00730

Safety Information

High Hazard

Loss of human life is likely if the dam fails.

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

Emergency Action Plan: Yes

Last Inspection: May 15, 2019

State Regulated: Yes

Regulatory Agency: NYS DEC

Ownership

KERT STEWARD

Private

Nearby Dams

Robert Wahlberg Dam

Chenango, NY

Low Hazard 15 ft

Tank Pond Dam

Chenango, NY

Low Hazard 9 ft

Norwich Reservoir #1 Dam

Chenango, NY

High Hazard 47 ft

Whites Pond Dam

Chenango, NY

Low Hazard 12 ft

Norwich Reservoir #2 Dam

Chenango, NY

High Hazard 56 ft

Guilford Lake Dam

Chenango, NY

High Hazard 15 ft

Trestle Lake Dam

Chenango, NY

Low Hazard 17 ft

Louis Dunckel Dam

Chenango, NY

Low Hazard 21 ft

Frequently Asked Questions

What is the hazard classification of Glenn Lake Dam?

Glenn Lake Dam is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Glenn Lake Dam?

Glenn Lake Dam is owned by KERT STEWARD (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Glenn Lake Dam built?

Glenn Lake Dam was completed in 1965, making it 61 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 Glenn Lake Dam?

Glenn 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 Glenn Lake Dam?

Glenn Lake Dam has a dam height of 43 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 Glenn Lake Dam last inspected?

Glenn Lake Dam was last inspected on May 15, 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.