Macomb Reservoir Report
Last Updated: December 18, 2025
Macomb, also known as Lamica Lake Dam, is a concrete gravity dam located in Westville Center, Franklin County, New York.
°F
°F
mph
Wind
%
Humidity
Summary
Built in 1904 with a height of 32 feet, this structure serves a primary purpose of hydroelectric power generation. With a normal storage capacity of 225 acre-feet and a drainage area of 184 square miles, Macomb plays a vital role in harnessing the Salmon River's resources for renewable energy production.
Managed by the Federal Energy Regulatory Commission, Macomb's spillway width of 77 feet and low hazard potential contribute to its overall moderate risk assessment. The dam's inspection frequency is every 3 years, with the last inspection conducted in September 2018. Equipped with two slide gates for water release control, Macomb's design incorporates multi-arch core types on a rock foundation, ensuring its structural integrity and operational efficiency for the surrounding community.
While Macomb poses a moderate risk level, its controlled operation and maintenance by federal regulatory agencies underscore its commitment to safety and environmental stewardship. As a key component in New York's hydroelectric infrastructure, Macomb's presence on the Salmon River highlights the intersection of water resource management, renewable energy production, and climate resilience for enthusiasts in the field.
Year Completed |
1904 |
Dam Length |
106 |
Dam Height |
32 |
River Or Stream |
Salmon River |
Surface Area |
14 |
Drainage Area |
184 |
Nid Storage |
225 |
Outlet Gates |
Slide (sluice gate) - 2 |
Hazard Potential |
Low |
Foundations |
Rock |
Nid Height |
32 |
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.
Macomb