De Flora Brothers Dam Lower Reservoir Report

Last Updated: December 6, 2025

De Flora Brothers Dam Lower, located in East Park, New York, is a private dam managed by the NYS DEC.


°F

°F

mph

Wind

%

Humidity

Summary

Built in 1959, this earth dam stands at a height of 28 feet and spans 690 feet in length, providing recreational opportunities in the area. With a storage capacity of 430 acre-feet and a drainage area of 0.49 square miles, the dam poses a significant hazard potential and is classified as having a moderate risk level.

Despite not having a condition assessment rating, the dam has been inspected as recently as November 2020, with inspections occurring every four years. The spillway, with a width of 40 feet, is uncontrolled, allowing for a maximum discharge of 700 cubic feet per second. The dam's primary purpose is recreation, with a surface area of 43 acres and normal storage capacity of 326 acre-feet. While the dam is not owned or funded by federal agencies, it falls under state jurisdiction and regulation, ensuring its safety and compliance with inspection and enforcement measures.

Overall, De Flora Brothers Dam Lower serves as a vital recreational resource in Dutchess County, New York, offering opportunities for water enthusiasts to enjoy the tranquil surroundings of TR-CRUM ELBOW CREEK. With its significant hazard potential and moderate risk assessment, continued monitoring and maintenance of the dam are essential to ensure public safety and the preservation of this valuable water resource for future generations.

Year Completed

1959

Dam Length

690

Dam Height

28

River Or Stream

TR-CRUM ELBOW CREEK

Primary Dam Type

Earth

Surface Area

43

Drainage Area

0.49

Nid Storage

430

Hazard Potential

Significant

Nid Height

28
       
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.