Gorge No. 18

Gorge No. 18 is a concrete dam located in Chittenden County, Vermont, built in 1914. It carries a Low hazard potential classification.

About Gorge No. 18

The primary purpose of Gorge No. 18 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 Green Mountain Power Corp (public utility). It impounds the Winooski River near South Burlington.

The dam stands 46 feet tall and stretches 350 feet across, creates a reservoir covering 87 acres, has a maximum storage capacity of 1,690 acre-feet, and collects water from a drainage area of 1,080 square miles. Completed in 1914, the structure is over a century old.

This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. The most recent inspection on record was 05/03/1984. That was over 41 years ago.

At 46 feet, this dam is taller than 91% of dams nationwide.

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Low HazardNot Rated ConditionEmergency Action Plan: Not Required

Location

StateVermont
CountyChittenden
Nearest CitySouth Burlington
River/StreamWinooski River
Coordinates44.49022, -73.16897

Physical Characteristics

Dam TypeConcrete
NID Height46 ft
Dam Height46 ft
Dam Length350 ft
Year Completed1914 (112 years old)

Storage & Hydraulics

NID Storage1,690 acre-ft
Max Storage1,690 acre-ft
Surface Area87 acres
Drainage Area1,080 sq mi

Ownership & Safety

PurposeHydroelectric
OwnerGREEN MOUNTAIN POWER CORP
Owner TypePublic Utility
Hazard ClassificationLow
Condition AssessmentNot Rated
Last Inspection05/03/1984
Emergency Action PlanNot Required

Identifiers

NID IDVT00030
Federal IDVT00030
More InfoState Dam Safety Program

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