Hailsboro Mill #3 Dam

Hailsboro Mill #3 Dam is a buttress dam located in St. Lawrence County, New York, built in 1910. It carries a Significant hazard potential classification.

About Hailsboro Mill #3 Dam

The primary purpose of Hailsboro Mill #3 Dam is hydroelectric. The dam generates hydroelectric power by channeling water through turbines, converting the energy of flowing water into electricity. The dam is owned by Central Rivers Power, Llc (private). It impounds the Oswegatchie River near Gouverneur.

The dam stands 16 feet tall and stretches 68 feet across, creates a reservoir covering 7 acres, has a maximum storage capacity of 35 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1910, the structure is over a century old.

This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. The most recent inspection on record was 07/15/2008. That was over 17 years ago.

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Significant HazardNot Rated ConditionEmergency Action Plan: No

Location

StateNew York
CountySt. Lawrence
Nearest CityGouverneur
River/StreamOswegatchie River
Coordinates44.31333, -75.44917

Physical Characteristics

Dam TypeButtress
NID Height16 ft
Dam Height16 ft
Dam Length68 ft
Year Completed1910 (116 years old)

Storage & Hydraulics

NID Storage35 acre-ft
Max Storage35 acre-ft
Normal Storage21 acre-ft
Surface Area7 acres
Drainage Area0 sq mi
Max Discharge800 cfs
Spillway TypeControlled

Ownership & Safety

PurposeHydroelectric
OwnerCentral Rivers Power, LLC
Owner TypePrivate
Hazard ClassificationSignificant
Condition AssessmentNot Rated
Last Inspection07/15/2008
Emergency Action PlanNo

Identifiers

NID IDNY00293
Federal IDNY00293
More InfoState Dam Safety Program

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