Irvington Water Works Dam Reservoir Report
Nearby: Halsey Pond Dam Woodlands Lake Dam
Last Updated: December 14, 2025
Irvington Water Works Dam, located in Westchester, New York, is a critical water resource managed by the local government.
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Summary
Built in 1900, this earth dam stands at a height of 20 feet and stretches 650 feet in length. With a storage capacity of 180 acre-feet, it serves a vital purpose in the region, holding back water from a small drainage area of 0.35 square miles.
Despite its age, the dam is in satisfactory condition and has a high hazard potential, prompting regular inspections to ensure its integrity. The dam features an uncontrolled spillway with a width of 24 feet, allowing excess water to be safely released during flood events. The surrounding area covers 14 acres, providing valuable surface water storage for the community.
With a moderate risk assessment rating and a history of meeting regulatory guidelines, Irvington Water Works Dam plays a crucial role in water management and flood control in the region. Its efficient operation and maintenance by the local government ensure the safety of nearby residents and the protection of valuable water resources in New York.
Year Completed |
1900 |
Dam Length |
650 |
Dam Height |
20 |
River Or Stream |
NONE |
Primary Dam Type |
Earth |
Surface Area |
14 |
Drainage Area |
0.35 |
Nid Storage |
180 |
Hazard Potential |
High |
Nid Height |
20 |
Seasonal Comparison
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Dam Data Reference
Condition Assessment
SatisfactoryNo 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
HighDams 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.
Irvington Water Works Dam