Harrison Dam

QUASSAIC CREEK· Orange, New York· Masonry· 15 ft tall
Significant Hazard Recreation Private

Key Takeaway

Harrison Dam is classified as significant hazard in New York. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 15 ft (taller than 37.1% in NY)
Dam Length115 ft
Dam TypeMasonry
Max Storage5 acre-ft
Normal Storage4 acre-ft
Surface Area6 acres
NID IDNY13154

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: No
Last Inspection: October 24, 2019
State Regulated: Yes
Regulatory Agency: NYS DEC

Ownership

RICHARD MASSIMI

Private

Nearby Dams

Mcdole Mill Pond Dam

Orange, NY

Significant Hazard 7 ft

Muchattoes Lake Dam

Orange, NY

Low Hazard 23 ft

Washington Lake Dam

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Significant Hazard 30 ft

Silver Stream Reservoir Dam

Orange, NY

High Hazard 36 ft

Benedicts Pond Dam

Orange, NY

Significant Hazard 16 ft

Chadwick Lake Dam

Orange, NY

High Hazard 37 ft

Melzingah Dam

Dutchess, NY

High Hazard 51 ft

Braendly Fishkill Dam

Dutchess, NY

Significant Hazard 18 ft

Frequently Asked Questions

What is the hazard classification of Harrison Dam?

Harrison 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 Harrison Dam?

Harrison Dam is owned by RICHARD MASSIMI (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

What is the primary purpose of Harrison Dam?

Harrison 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 Harrison Dam?

Harrison Dam has a dam height of 15 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 Harrison Dam last inspected?

Harrison Dam was last inspected on October 24, 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.