Ripley Reservoir Dam Reservoir Report

Last Updated: December 11, 2025

Ripley Reservoir Dam, located in Ripley, New York, serves as a crucial water supply source for the area.


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Summary

Constructed in 1950, this earth-type dam stands at a height of 46 feet and spans 1000 feet in length. With a maximum storage capacity of 93 acre-feet and a normal storage of 84 acre-feet, the dam plays a vital role in managing water resources in the region.

Managed by the local government and regulated by the New York State Department of Environmental Conservation, Ripley Reservoir Dam has a significant hazard potential, indicating the importance of regular inspections and risk assessments. Despite not being rated for its current condition, emergency action plans have been prepared and updated, with the latest revision made in January 2021. With a high risk level assigned to the dam, it is crucial for authorities to ensure that proper risk management measures are in place to safeguard the surrounding communities and environment.

As part of the TR-Lake Erie watershed, Ripley Reservoir Dam plays a key role in maintaining water quality and quantity in the region. Although it does not have a spillway, the dam's presence is essential for managing water flow and ensuring reliable water supply for the residents of Chautauqua County. With its strategic location and critical purpose, Ripley Reservoir Dam stands as a testament to the importance of sustainable water resource management in the face of changing climate conditions.

Year Completed

1950

Dam Length

1000

Dam Height

46

River Or Stream

TR-LAKE ERIE

Primary Dam Type

Earth

Surface Area

3

Drainage Area

0.01

Nid Storage

93

Hazard Potential

Significant

Nid Height

46
       
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.