Lower Ansonia Reservoir Dam

High HazardSatisfactory ConditionEmergency Action Plan: Yes

Location

StateConnecticut
CountyNew Haven
Nearest CityEAST DERBY
River/StreamNAUGATUCK RIVER TRIB
Coordinates41.31967, -73.07427

Physical Characteristics

Dam TypeEarth
NID Height18 ft
Dam Height18 ft
Dam Length423 ft
Year Completed1887 (139 years old)

Storage & Hydraulics

NID Storage90 acre-ft
Max Storage90 acre-ft
Normal Storage71 acre-ft
Surface Area9 acres
Drainage Area0 sq mi
Max Discharge210 cfs

Ownership & Safety

PurposeWater Supply
OwnerCity of Derby
Owner TypeLocal Government
Hazard ClassificationHigh
Condition AssessmentSatisfactory
Last Inspection12/13/2021
Emergency Action PlanYes

Identifiers

NID IDCT00027
Federal IDCT00027
More InfoState Dam Safety Program

Nearby Dams

Upper Ansonia Reservoir East Dike 0.3 mi High Shelton Canal Dike 1.4 mi Low Picketts Pond Dam 1.7 mi Significant Shelton Reservoir #2 Dam 1.8 mi High Quillinan Reservoir Dam 2.0 mi High Kellogg Pond Dam 2.2 mi Significant Shelton Reservoir #3 Dam 2.5 mi Significant Wepawaug Reservoir Dam 2.5 mi Significant Camp Cedarcrest Pond Dam 2.7 mi Significant Fountain Lake Dam 2.8 mi High