Weston Mill Pond Dam

Weston Mill Pond Dam is a masonry dam located in Middlesex County, New Jersey, built in 1916. It carries a Significant hazard potential classification and has a fair condition assessment.

About Weston Mill Pond Dam

The primary purpose of Weston Mill Pond Dam is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by New Brunswick City (local government). It impounds the Lawrence Brook near New Brunswick.

The dam stands 16 feet tall and stretches 309 feet across, creates a reservoir covering 162 acres, has a maximum storage capacity of 1,965 acre-feet, and collects water from a drainage area of 42 square miles. Completed in 1916, the structure is over a century old.

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 12/15/2023.

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Significant HazardFair ConditionEmergency Action Plan: Yes

Location

StateNew Jersey
CountyMiddlesex
Nearest CityNew Brunswick
River/StreamLawrence Brook
Coordinates40.48297, -74.41240

Physical Characteristics

Dam TypeMasonry
NID Height16 ft
Dam Height16 ft
Dam Length309 ft
Year Completed1916 (110 years old)

Storage & Hydraulics

NID Storage1,965 acre-ft
Max Storage1,965 acre-ft
Normal Storage1,060 acre-ft
Surface Area162 acres
Drainage Area42 sq mi
Max Discharge1,645 cfs

Ownership & Safety

PurposeWater Supply
OwnerNew Brunswick City
Owner TypeLocal Government
Hazard ClassificationSignificant
Condition AssessmentFair
Last Inspection12/15/2023
Emergency Action PlanYes

Identifiers

NID IDNJ00164
Federal IDNJ00164
More InfoState Dam Safety Program

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