Kamargo Reservoir Report
Last Updated: December 18, 2025
Kamargo is a privately owned hydroelectric dam located on the Black River in Jefferson County, New York.
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Summary
Built in 1920, this concrete gravity dam stands at a height of 12 feet and has a length of 820.8 feet. With a storage capacity of 359.5 acre-feet and a maximum discharge of 48,000 cubic feet per second, Kamargo plays a crucial role in generating hydroelectric power for the region.
Managed by the Federal Energy Regulatory Commission (FERC), Kamargo is inspected regularly to ensure its structural integrity and safe operation. The dam is classified as having a low hazard potential, with a moderate risk assessment rating. While no condition assessment is currently available, the dam's emergency action plan was last revised in 2013, indicating a commitment to preparedness and safety measures in case of any unforeseen events.
For water resource and climate enthusiasts, Kamargo represents a significant piece of infrastructure that harnesses the power of water to generate clean energy. As a vital component of the region's energy grid, the dam's operations and maintenance are closely monitored to mitigate any potential risks and ensure the safety of surrounding communities and the environment.
Year Completed |
1920 |
Dam Length |
820.8 |
Dam Height |
12 |
River Or Stream |
Black River |
Primary Dam Type |
Concrete |
Surface Area |
40 |
Drainage Area |
1855 |
Nid Storage |
359.5 |
Hazard Potential |
Low |
Foundations |
Rock |
Nid Height |
12 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Black River At Watertown Ny
|
2330cfs |
Sandy Creek Near Adams Ny
|
212cfs |
Beaver River At Croghan Ny
|
695cfs |
West Branch Oswegatchie R Nr Harrisville Ny
|
322cfs |
Independence River At Donnattsburg Ny
|
214cfs |
Salmon River At Pineville Ny
|
488cfs |
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.
Kamargo