Greenleaf Dike Reservoir Report

Last Updated: December 7, 2025

Greenleaf Dike, also known as Shawangunk Lake, is a local government-owned structure in Baileyville, Orange County, New York, designed to supply water.


°F

°F

mph

Wind

%

Humidity

Summary

Completed in 1925, this earth dam stands at 32 feet high and stretches 333 feet in length. With a storage capacity of 1633 acre-feet, it serves as a critical water resource for the area, covering a surface area of 101 acres and draining a 1.5 square mile watershed.

Managed by the New York Department of Environmental Conservation, Greenleaf Dike has a high hazard potential due to its condition being assessed as fair. Regular inspections are conducted, with the last one taking place in December 2020, to ensure the safety and reliability of the structure. Despite its age, the dam continues to meet regulatory requirements for state permitting, inspection, and enforcement, providing a vital source of water supply for the community.

Located along the TR-Little Shawangunk Kill, Greenleaf Dike plays a crucial role in water management and flood control in the region. With its historical significance and ongoing operational importance, this dam stands as a testament to the intersection of water resource management and climate resilience in New York.

Year Completed

1925

Dam Length

333

Dam Height

32

River Or Stream

TR-LITTLE SHAWANGUNK KILL

Primary Dam Type

Earth

Surface Area

101

Drainage Area

1.5

Nid Storage

1633

Hazard Potential

High

Nid Height

32
       
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.