New Jersey No Name #31 Dam Reservoir Report

Last Updated: December 6, 2025

New Jersey No Name #31 Dam, located in Clinton Township, Hunterdon, New Jersey, is a state-regulated earth dam situated on Cramers Creek.


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Summary

Standing at a height of 23 feet and stretching 550 feet in length, this dam serves a primary purpose of "Other" with a storage capacity of 40 acre-feet. With a drainage area of 2.3 square miles and a surface area of 7 acres, this dam plays a vital role in water resource management in the region.

Despite its satisfactory condition assessment as of October 2020, New Jersey No Name #31 Dam has a high hazard potential, highlighting the importance of regular inspections and maintenance. The dam is subject to state regulation, with the New Jersey Department of Environmental Protection overseeing permitting, inspection, and enforcement activities. The dam's Emergency Action Plan was last revised in April 2021, emphasizing the need for preparedness and risk management measures to ensure the safety and security of the surrounding area in the event of an emergency.

Congressional District 07, represented by Tom Malinowski, encompasses the location of the dam, underscoring the significance of political and community involvement in water resource and climate-related issues. With its critical role in water storage and management, New Jersey No Name #31 Dam serves as a key infrastructure asset in the region, requiring ongoing attention and resources to maintain its functionality and safety for the benefit of local residents and the environment.

Dam Length

550

Dam Height

23

River Or Stream

Cramers Creek

Primary Dam Type

Earth

Surface Area

7

Drainage Area

2.3

Nid Storage

40

Hazard Potential

High

Nid Height

23
       
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.