Fort Miller Reservoir Report
Last Updated: December 16, 2025
Fort Miller, also known as Lock C-6 Dam, is a privately owned structure located in Northumberland, New York along the Hudson River.
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Summary
This dam, completed in 1984, serves a primary purpose of hydroelectric power generation and is regulated by the New York State Department of Environmental Conservation. It has a height of 7 feet and a length of 700 feet, with a storage capacity of 15,000 acre-feet and a maximum discharge of 38,000 cubic feet per second.
Managed by the Federal Energy Regulatory Commission, Fort Miller is classified as a low hazard potential dam with a moderate risk assessment rating. Its spillway type is uncontrolled, with a width of 700 feet, and it has a surface area of 1536 acres and drainage area of 2980 acres. While the condition assessment is not available, the dam undergoes inspections every 3 years, with the last one conducted in June 2019. An Emergency Action Plan (EAP) is in place, last revised in January 2020, to ensure appropriate response measures in case of emergencies related to the dam.
Overall, Fort Miller plays a crucial role in the hydroelectric infrastructure of the region, contributing to the generation of clean energy from the flow of the Hudson River. With its regulated operations and risk management measures in place, it stands as a testament to sustainable water resource utilization and climate-conscious energy production in New York State.
Year Completed |
1984 |
Dam Length |
700 |
Dam Height |
7 |
River Or Stream |
Hudson River |
Primary Dam Type |
Other |
Surface Area |
1536 |
Drainage Area |
2980 |
Nid Storage |
15000 |
Hazard Potential |
Low |
Nid Height |
7 |
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.
Fort Miller
Schuyler Island Way Schuylerville