Bronx River Dam (North) Reservoir Report

Last Updated: December 14, 2025

The Bronx River Dam (North) is a historic masonry dam located in Bronx, New York, completed in the year 1900.


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Summary

Situated on the Bronx River, this dam serves primarily for recreational purposes, offering a serene and picturesque setting for visitors to enjoy. With a height of 18 feet and a length of 122 feet, the dam has a storage capacity of 108 acre-feet, providing a beautiful surface area of 12 acres for recreational activities.

Managed by the local government and regulated by the New York State Department of Environmental Conservation, the Bronx River Dam (North) is considered to have a significant hazard potential, although its condition assessment is currently not rated. The dam features an uncontrolled spillway with a width of 89 feet, allowing for a maximum discharge of 1571 cubic feet per second. Regular inspections are conducted, with the last one taking place in November 2018, and an emergency action plan is in place to ensure public safety in case of any unforeseen events.

Despite its age, the Bronx River Dam (North) continues to be a valuable resource for the community, offering a tranquil retreat along the Bronx River. With its rich history and scenic surroundings, this dam remains an important landmark for water resource and climate enthusiasts to explore and appreciate.

Year Completed

1900

Dam Length

122

Dam Height

18

River Or Stream

BRONX RIVER

Primary Dam Type

Masonry

Surface Area

12

Drainage Area

36.36

Nid Storage

108

Hazard Potential

Significant

Nid Height

18
       
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.