Lehigh Valley Dam Reservoir Report

Last Updated: December 25, 2025

Located in Lodi Station, Seneca, New York, the Lehigh Valley Dam stands as a crucial flood risk reduction structure along the Mill Creek.


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Summary

Built in 1895, this concrete dam boasts a height of 26 feet and a length of 132 feet, offering a maximum storage capacity of 50 acre-feet. With a low hazard potential and a moderate risk assessment rating of 3, the dam remains under the regulatory oversight of the New York State Department of Environmental Conservation.

Despite its age, the Lehigh Valley Dam has not been rated for its condition, indicating a need for further assessment and potential maintenance. The dam's uncontrolled spillway, with a width of 60 feet, can accommodate a maximum discharge of 900 cubic feet per second. In the event of an emergency, the dam's emergency action plan status and risk management measures are currently not specified, bringing attention to the importance of ensuring the safety and stability of this vital infrastructure for flood risk mitigation in the region.

Year Completed

1895

Dam Length

132

Dam Height

26

River Or Stream

MILL CREEK

Primary Dam Type

Concrete

Surface Area

5

Nid Storage

50

Hazard Potential

Low

Nid Height

26
       
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.