Chase Reservoir Dam

Chase Reservoir Dam is an earth dam located in Windham County, Connecticut, built in 1870. It carries a Significant hazard potential classification and has a fair condition assessment.

About Chase Reservoir Dam

The primary purpose of Chase Reservoir Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Town Of Killingly (local government). It impounds the Whetstone Brook Tributary near Killingly.

The dam stands 13 feet tall and stretches 555 feet across, creates a reservoir covering 60 acres, has a storage capacity of 240 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1870, the structure is one of the older dams in the region, with over a century and a half of service.

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. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. An emergency action plan is in place for this dam. The most recent inspection on record was 12/14/2016.

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Significant HazardFair ConditionEmergency Action Plan: Yes

Location

StateConnecticut
CountyWindham
Nearest CityKillingly
River/StreamWhetstone Brook Tributary
Coordinates41.84597, -71.83736

Physical Characteristics

Dam TypeEarth
NID Height13 ft
Dam Height13 ft
Dam Length555 ft
Year Completed1870 (156 years old)

Storage & Hydraulics

NID Storage240 acre-ft
Normal Storage240 acre-ft
Surface Area60 acres
Drainage Area1 sq mi
Spillway TypeUncontrolled

Ownership & Safety

PurposeRecreation
OwnerTown of Killingly
Owner TypeLocal Government
Hazard ClassificationSignificant
Condition AssessmentFair
Last Inspection12/14/2016
Emergency Action PlanYes

Identifiers

NID IDCT00177
Federal IDCT00177
More InfoState Dam Safety Program

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