Lower Earlville Reservoir Dam

TR-SANGERFIELD RIVER· Madison, New York· Earth· 25 ft tall
Significant Hazard Recreation Private

Key Takeaway

Lower Earlville Reservoir 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 25 ft (taller than 69.7% in NY)
Dam Length300 ft
Dam TypeEarth
Max Storage35 acre-ft
Normal Storage20 acre-ft
Surface Area3 acres
Drainage Area1 sq mi
Max Discharge288 cfs
NID IDNY12124

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: November 24, 2020
State Regulated: Yes
Regulatory Agency: NYS DEC

Ownership

HARMON HOFF & EVE ANN SHWARTZ

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Lower Earlville Reservoir Dam?

Lower Earlville Reservoir 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 Lower Earlville Reservoir Dam?

Lower Earlville Reservoir Dam is owned by HARMON HOFF & EVE ANN SHWARTZ (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

What is the primary purpose of Lower Earlville Reservoir Dam?

Lower Earlville Reservoir 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 Lower Earlville Reservoir Dam?

Lower Earlville Reservoir Dam has a dam height of 25 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 Lower Earlville Reservoir Dam last inspected?

Lower Earlville Reservoir Dam was last inspected on November 24, 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.