Andover Dam

LIBERTY BROOK· Allegany, New York· Built 1951· Timber Crib· 9 ft tall
Low Hazard Other Recreation Local Government

Key Takeaway

Andover Dam is classified as low hazard in New York. It was completed in 1951 and is 75 years old. Its primary use is other.

Physical Details

Dam Height 9 ft (taller than 9% in NY)
Dam Length370 ft
Dam TypeTimber Crib
Max Storage294 acre-ft
Normal Storage118 acre-ft
Surface Area25 acres
Drainage Area6 sq mi
Year Completed1951 (75 years old)
NID IDNY00439

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: July 25, 1991
State Regulated: Yes
Regulatory Agency: NYS DEC

Ownership

TOWN OF ANDOVER

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Andover Dam?

Andover 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 Andover Dam?

Andover Dam is owned by TOWN OF ANDOVER (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Andover Dam built?

Andover Dam was completed in 1951, making it 75 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 Andover Dam?

Andover Dam serves the following purposes: Other, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Andover Dam?

Andover Dam has a dam height of 9 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 Andover Dam last inspected?

Andover Dam was last inspected on July 25, 1991. 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.