Medina Aqueduct Dam Reservoir Report

Last Updated: December 5, 2025

Medina Aqueduct Dam, also known as Oak Orchard Hydro, is a state-owned structure located in Medina, New York, along the Erie Canal.


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Summary

Completed in 1967, this concrete dam stands at a height of 21 feet and has a length of 305 feet, with a primary purpose of hydroelectric power generation. With a storage capacity of 6 acre-feet and a maximum discharge of 180 cubic feet per second, this dam plays a crucial role in managing water resources in the area.

Despite not being regulated by the state, the dam is subject to state inspections to ensure its structural integrity and safety. With a significant hazard potential and a very high risk rating, emergency action plans are in place, though the condition assessment of the dam remains unrated. The spillway, which is controlled and 30 feet wide, helps prevent overflow and mitigate flood risks in the surrounding area.

For water resource and climate enthusiasts, the Medina Aqueduct Dam serves as a key piece of infrastructure in the region, harnessing the power of the water to produce clean energy. Its location along the Erie Canal adds to its historical and cultural significance, while its modern design and functionality make it a vital component in water management and flood control efforts. Despite its age, the dam continues to play a crucial role in ensuring the sustainability and resilience of the area's water resources.

Year Completed

1967

Dam Length

305

Dam Height

21

River Or Stream

ERIE CANAL

Primary Dam Type

Concrete

Surface Area

1

Drainage Area

0.03

Nid Storage

6

Hazard Potential

Significant

Nid Height

21
       
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.