Little Falls Reservoir Dam Reservoir Report
Last Updated: December 20, 2025
The Little Falls Reservoir Dam, located in Herkimer, New York, serves as a crucial water supply resource for the local community.
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Summary
Built in 1901, this masonry dam stands at a height of 42 feet and has a storage capacity of 101 acre-feet. The dam's primary purpose is to provide water supply, with a normal storage capacity of 77 acre-feet and a surface area of 6 acres.
Managed by the local government and regulated by the New York State Department of Environmental Conservation, the Little Falls Reservoir Dam has a significant hazard potential but is currently assessed to be in satisfactory condition. The dam's emergency action plan is up to date, with a moderate risk assessment rating. The dam's last inspection in June 2019 indicated a good condition, with inspections scheduled every 4 years to ensure its continued safety and effectiveness in water resource management.
Overall, the Little Falls Reservoir Dam plays a vital role in water supply management in the region, serving as a key infrastructure for the community. With proper maintenance and regulatory oversight, the dam continues to function effectively in safeguarding water resources and mitigating potential risks associated with its operation.
Year Completed |
1901 |
Dam Length |
200 |
Dam Height |
42 |
River Or Stream |
TR-MOHAWK RIVER |
Primary Dam Type |
Masonry |
Surface Area |
6 |
Nid Storage |
101 |
Hazard Potential |
Significant |
Nid Height |
42 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
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.
Little Falls Reservoir Dam