Clinton Mills Dike

Clinton Mills Dike is an earth dam located in Hunterdon County, New Jersey. It carries a Significant hazard potential classification and has a satisfactory condition assessment.

About Clinton Mills Dike

The primary purpose of Clinton Mills Dike is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Hunterdon County Art Center (private). It impounds the South Branch Raritan River.

The dam stands 8 feet tall and stretches 320 feet across, creates a reservoir covering 10 acres, has a storage capacity of 21 acre-feet, and collects water from a drainage area of 111 square miles.

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 satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 03/21/2024.

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Significant HazardSatisfactory ConditionEmergency Action Plan: Yes

Location

StateNew Jersey
CountyHunterdon
River/StreamSouth Branch Raritan River
Coordinates40.63700, -74.91208

Physical Characteristics

Dam TypeEarth
NID Height8 ft
Dam Height8 ft
Dam Length320 ft

Storage & Hydraulics

NID Storage21 acre-ft
Normal Storage21 acre-ft
Surface Area10 acres
Drainage Area111 sq mi

Ownership & Safety

PurposeFlood Risk Reduction
OwnerHunterdon County Art Center
Owner TypePrivate
Hazard ClassificationSignificant
Condition AssessmentSatisfactory
Last Inspection03/21/2024
Emergency Action PlanYes

Identifiers

NID IDNJ00564
Federal IDNJ00564
More InfoState Dam Safety Program

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