Unionville Pond Dam

Significant HazardFair ConditionEmergency Action Plan: Yes

Location

StateMassachusetts
CountyWorcester
Nearest CityHolden
River/StreamChaffins Brook
Coordinates42.36139, -71.83901

Physical Characteristics

Dam TypeEarth
NID Height21 ft
Dam Length200 ft
Year Completed1909 (117 years old)

Storage & Hydraulics

NID Storage380 acre-ft
Max Storage380 acre-ft
Normal Storage100 acre-ft
Surface Area19 acres
Drainage Area6 sq mi
Max Discharge187 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeRecreation
OwnerMA Department of Conservation & Recreation
Owner TypeState
Hazard ClassificationSignificant
Condition AssessmentFair
Last Inspection06/02/2022
Emergency Action PlanYes

Identifiers

NID IDMA00620
Federal IDMA00620
More InfoState Dam Safety Program

Nearby Dams

Current Meter Pond Dam 1.8 mi Significant Chaffin Pond Dam 1.8 mi Significant Dawson Pond Dam 1.9 mi Significant Eagle Lake Dam 2.3 mi High Maple Spring Pond Dam 2.6 mi Significant Kendall Reservoir Dam 2.7 mi High Quinapoxet Reservoir Dam 2.8 mi High Cournoyer Pond Dam 2.8 mi Low Kendall Reservoir Lower Basin Dam 3.2 mi Significant Pine Hill Reservoir Dam 3.4 mi High