Camp Nyoda Dam Reservoir Report

Last Updated: December 9, 2025

Camp Nyoda Dam, located in Jefferson Township, Morris County, New Jersey, is a privately owned recreational dam constructed in 1912 on the East Branch Rockaway River.


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Summary

With a height of 9 feet and a length of 175 feet, this earth dam provides a storage capacity of 14 acre-feet and covers a surface area of 3 acres. The dam is regulated by the New Jersey Department of Environmental Protection and undergoes regular inspections, with the last assessment conducted in March 2020, deeming its condition as satisfactory.

Despite its age, Camp Nyoda Dam remains a significant structure with a hazard potential that is closely monitored. The dam's emergency action plan is up to date, ensuring that necessary measures are in place to address any potential risks or emergencies. With its picturesque location and purpose primarily for recreation, the dam serves as a vital resource for the local community and offers a serene environment for water resource and climate enthusiasts to appreciate and enjoy. As a key feature in the East Branch Rockaway River watershed, Camp Nyoda Dam plays a crucial role in water management and conservation efforts in the region.

Year Completed

1912

Dam Length

175

Dam Height

9

River Or Stream

East Branch Rockaway River

Primary Dam Type

Earth

Surface Area

3

Drainage Area

1.7

Nid Storage

14

Hazard Potential

Significant

Nid Height

9
       
Seasonal Comparison

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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.