Holmes Mill Dam

TR-MIDDLE BR CROTON RIVER· Dutchess, New York· Masonry· 9 ft tall
Significant Hazard Irrigation Local Government

Key Takeaway

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

Physical Details

Dam Height 9 ft (taller than 9% in NY)
Dam Length87 ft
Dam TypeMasonry
Max Storage6 acre-ft
Normal Storage5 acre-ft
Surface Area2 acres
NID IDNY13886

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: Yes
Last Inspection: April 10, 2020
State Regulated: Yes
Regulatory Agency: NYS DEC

Ownership

TOWN OF PAWLING

Local Government

Nearby Dams

Lake Dutchess Dam

Dutchess, NY

Low Hazard 15 ft

Crystal Lake Dam

Dutchess, NY

Significant Hazard 12 ft

Wonder Lake Dam

Putnam, NY

Low Hazard 7 ft

Harmony Lake Dam

Dutchess, NY

Significant Hazard 16 ft

Drew Lake Dam

Putnam, NY

Low Hazard 13 ft

Mayer Pond Dam

Dutchess, NY

Significant Hazard 20 ft

Little Whaley Lake Dam

Dutchess, NY

Low Hazard 10 ft

Pearce Pond Dam

Dutchess, NY

Significant Hazard 7 ft

Frequently Asked Questions

What is the hazard classification of Holmes Mill Dam?

Holmes Mill 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 Holmes Mill Dam?

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

What is the primary purpose of Holmes Mill Dam?

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

How tall is Holmes Mill Dam?

Holmes Mill 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 Holmes Mill Dam last inspected?

Holmes Mill Dam was last inspected on April 10, 2020. 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.