Cuba Lake Outlet Spillway Dam Reservoir Report

Last Updated: December 6, 2025

Located in Maplehurst, Allegany, New York, the Cuba Lake Outlet Spillway Dam is a concrete structure completed in 1919 for recreational purposes.


°F

°F

mph

Wind

%

Humidity

Summary

With a height of 9 feet and a length of 136 feet, this dam has a storage capacity of 16,498 acre-feet and covers a surface area of 465 acres. It is regulated by the New York State Department of Environmental Conservation, with inspection, permitting, and enforcement protocols in place.

The spillway type of the Cuba Lake Outlet Dam is controlled, with a width of 102 feet and a maximum discharge capacity of 800 cubic feet per second. Despite being classified as having a significant hazard potential, the dam's condition is currently not rated. Emergency action plans have been prepared, with the last revision in January 2019, ensuring that the risk of inundation is managed effectively. Congressional District 23, represented by Tom Reed, oversees this vital water resource infrastructure in New York.

Overall, the Cuba Lake Outlet Spillway Dam serves as a crucial recreational and water management asset, providing both enjoyment and safety to the surrounding community. With a high risk assessment but proper risk management measures in place, this dam showcases the importance of maintaining and monitoring water resources in the face of changing climate conditions.

Year Completed

1919

Dam Length

136

Dam Height

9

River Or Stream

CUBA LAKE OUTLET

Primary Dam Type

Concrete

Surface Area

465

Drainage Area

25.3

Nid Storage

16498

Hazard Potential

Significant

Nid Height

9
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.