High Falls Reservoir Report
Last Updated: December 19, 2025
High Falls is a privately-owned hydroelectric dam located in Croghan, New York, along the Beaver River.
°F
°F
mph
Wind
%
Humidity
Summary
Built in 1925, this concrete gravity dam stands at a height of 50 feet and has a length of 1233 feet, with a storage capacity of 1058 acre-feet. The dam's primary purpose is hydroelectric power generation, with a maximum discharge of 6600 cubic feet per second.
Managed by the Federal Energy Regulatory Commission, High Falls poses a high hazard potential due to its uncontrolled spillway and its location in an area with a moderate risk assessment. The dam is inspected by the federal agency and has emergency action plans in place. Despite its age, the condition assessment of High Falls is not available, indicating a need for further evaluation to ensure its structural integrity and safety for the surrounding community.
Enthusiasts of water resources and climate will find High Falls an intriguing structure with a rich history in renewable energy production. Its location in Lewis County, New York, offers a picturesque setting for those interested in exploring the intersection of water management, energy generation, and environmental sustainability.
Year Completed |
1925 |
Dam Length |
1233 |
Dam Height |
50 |
River Or Stream |
Beaver River |
Primary Dam Type |
Concrete |
Surface Area |
145 |
Drainage Area |
267 |
Nid Storage |
1058 |
Outlet Gates |
Slide (sluice gate) - 1 |
Hazard Potential |
High |
Foundations |
Rock |
Nid Height |
50 |
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.
High Falls