Upper Flannagan Pond Dam

Significant HazardPoor ConditionEmergency Action Plan: No

Location

StateMassachusetts
CountyMiddlesex
Nearest CityAyer
River/StreamTributary of Nonacocus Brook
Coordinates42.56209, -71.57397

Physical Characteristics

NID Height9 ft
Dam Length30 ft
Year Completed1955 (71 years old)

Storage & Hydraulics

NID Storage110 acre-ft
Max Storage110 acre-ft
Normal Storage75 acre-ft
Surface Area23 acres
Drainage Area0 sq mi
Max Discharge50 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeRecreation
OwnerTown of Ayer
Owner TypeLocal Government
Hazard ClassificationSignificant
Condition AssessmentPoor
Last Inspection11/05/2021
Emergency Action PlanNo

Identifiers

NID IDMA00810
Federal IDMA00810
More InfoState Dam Safety Program

Nearby Dams

Balch Pond Dam 0.5 mi Significant Balch Pond Dike 0.6 mi Significant Plow Shop Pond Dam 1.1 mi Low Long Pond Dam 1.4 mi Low Ice House 2.4 mi Low Lost Lake Dam 3.9 mi High Squannacook River Dam 3.9 mi High Mill Pond Dam 4.3 mi Low Murray Printing Company Dam 4.6 mi Significant Bare Hill Pond Dam 4.6 mi Significant