Spruce Run Flow Measuring Weir Dam Reservoir Report

Last Updated: December 6, 2025

The Spruce Run Flow Measuring Weir Dam, located in Clinton, New Jersey, is a state-owned concrete dam completed in 1960.


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Summary

This dam plays a crucial role in monitoring and managing the flow of the Spruce Run river. With a height of 8.5 feet and a length of 200 feet, the dam has a normal storage capacity of 52 acre-feet and a maximum discharge of 4060 cubic feet per second.

Despite its significant role in water resource management, the dam's condition assessment is listed as poor, indicating a need for maintenance and improvements. The hazard potential is classified as low, but regular inspections are conducted every four years to ensure the safety and stability of the structure. The dam's location in Hunterdon County, New Jersey, makes it a key asset in the region's water infrastructure.

Water resource and climate enthusiasts will find the Spruce Run Flow Measuring Weir Dam an important piece of infrastructure in New Jersey. Its role in monitoring and regulating the flow of the Spruce Run river highlights the vital connection between water management and environmental sustainability. However, the dam's poor condition assessment underscores the need for ongoing maintenance and investment to ensure its continued functionality and safety for years to come.

Year Completed

1960

Dam Length

200

Dam Height

8.5

River Or Stream

Spruce Run

Primary Dam Type

Concrete

Surface Area

12

Drainage Area

41.3

Nid Storage

102

Hazard Potential

Low

Nid Height

9
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.

Hazard Potential Classification

High
Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.