Maple Lake Dam Reservoir Report
Nearby: Evans Pond Dam Snow Bird Lake Dam
Last Updated: December 22, 2025
Maple Lake Dam, located in Herkimer, New York, was completed in 1905 and stands at a height of 12 feet with a length of 250 feet.
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Summary
The dam serves primarily for recreation purposes, with a storage capacity of 77 acre-feet and a surface area of 19 acres. Situated on the Muskrat Brook, Maple Lake Dam is a privately owned structure that is regulated by the New York State Department of Environmental Conservation.
Despite being classified as having a low hazard potential, Maple Lake Dam is considered to have a moderate risk level, with a risk assessment rating of 3. The dam's condition is currently not rated, with its last inspection conducted in November 1988. While the dam does not have an Emergency Action Plan (EAP) in place, it is subject to state regulation, inspection, and enforcement. The spillway type is uncontrolled, with a width of 18 feet, ensuring the safe release of water in case of overflow.
Water resource and climate enthusiasts will appreciate Maple Lake Dam for its historical significance and recreational value, as well as its role in managing water flow on the Muskrat Brook. The dam's presence adds to the scenic beauty of the area and provides opportunities for fishing, boating, and other recreational activities. While the dam is currently in a stable condition, ongoing monitoring and maintenance are essential to ensure its continued safety and functionality for both the community and the environment.
Year Completed |
1905 |
Dam Length |
250 |
Dam Height |
12 |
River Or Stream |
MUSKRAT BROOK |
Primary Dam Type |
Earth |
Surface Area |
19 |
Nid Storage |
77 |
Hazard Potential |
Low |
Nid Height |
12 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Black River Near Boonville Ny
|
322cfs |
Independence River At Donnattsburg Ny
|
214cfs |
East Branch Fish Creek At Taberg Ny
|
499cfs |
Buck Creek Near Inlet Ny
|
0cfs |
Buck Creek
|
1cfs |
Oneida Creek At Oneida Ny
|
213cfs |
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.
Maple Lake Dam