Quinebaug

Quinebaug is a masonry dam located in Windham County, Connecticut, built in 1855. It carries a Low hazard potential classification and has a satisfactory condition assessment.

About Quinebaug

The primary purpose of Quinebaug 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 Quinebaug Associates, Llc (private). It impounds the Quinebaug River near Brooklyn.

The dam stands 14 feet tall and stretches 250 feet across, creates a reservoir covering 85 acres, has a maximum storage capacity of 283 acre-feet, and collects water from a drainage area of 384 square miles. Completed in 1855, the structure is one of the older dams in the region, with over a century and a half of service.

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. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 09/12/2022.

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Low HazardSatisfactory ConditionEmergency Action Plan: Not Required

Location

StateConnecticut
CountyWindham
Nearest CityBrooklyn
River/StreamQuinebaug River
Coordinates41.80190, -71.88740

Physical Characteristics

Dam TypeMasonry
NID Height14 ft
Dam Height14 ft
Dam Length250 ft
Year Completed1855 (171 years old)

Storage & Hydraulics

NID Storage283 acre-ft
Max Storage283 acre-ft
Normal Storage283 acre-ft
Surface Area85 acres
Drainage Area384 sq mi
Max Discharge6,934 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeHydroelectric
OwnerQuinebaug Associates, LLC
Owner TypePrivate
Hazard ClassificationLow
Condition AssessmentSatisfactory
Last Inspection09/12/2022
Emergency Action PlanNot Required

Identifiers

NID IDCT00513
Federal IDCT00513
More InfoState Dam Safety Program

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