Floradan Estates Dam Reservoir Report

Last Updated: December 6, 2025

Floradan Estates Dam in Lake Peekskill, Putnam, New York, is a privately owned earth dam completed in 1982 primarily for recreational purposes.


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Summary

With a height of 8 feet and a length of 250 feet, the dam has a storage capacity of 456 acre-feet and a maximum discharge rate of 600 cubic feet per second. The dam, located on Oscawana Creek, has a controlled spillway with a width of 35 feet, making it a significant structure in the region.

Despite being privately owned, Floradan Estates Dam is regulated by the New York State Department of Environmental Conservation (NYS DEC) and undergoes regular inspections and enforcement measures to ensure its safety and compliance. The dam has a significant hazard potential and is rated as having a very high risk, emphasizing the importance of proper management and maintenance. The last inspection of the dam was conducted in December 2020, with an inspection frequency of 4 times per year, although the condition assessment is currently not rated.

Water resource and climate enthusiasts interested in the Floradan Estates Dam can appreciate its role in providing recreational opportunities while also recognizing the importance of its regulatory oversight and risk management. The dam's location on Oscawana Creek and its storage capacity make it a crucial piece of infrastructure in the area, highlighting the intersection of human development and natural resource management. As efforts continue to monitor and assess the dam's condition, ongoing attention to its safety and functionality will be essential for the surrounding community and environment.

Year Completed

1982

Dam Length

250

Dam Height

8

River Or Stream

OSCAWANA CREEK

Primary Dam Type

Earth

Surface Area

110

Drainage Area

6.8

Nid Storage

456

Hazard Potential

Significant

Nid Height

8
       
Seasonal Comparison

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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.