Located in North Branch, New York, the Petrillo Lake Dam stands as a recreational marvel, completed in 1952 to provide both locals and visitors with opportunities for leisure and enjoyment. As a privately owned structure, this earth-type dam spans 480 feet in length and reaches a height of 17 feet, creating a serene lake covering 9 acres with a maximum storage capacity of 68 acre-feet. The dam's primary purpose is for recreation, offering a picturesque setting for activities such as fishing, boating, and picnicking.

Managed by the New York State Department of Environmental Conservation (NYS DEC), Petrillo Lake Dam is regularly inspected for safety and compliance, with state jurisdiction, permitting, and enforcement in place to ensure proper maintenance and operation. Despite being categorized with a low hazard potential and a moderate risk assessment rating, the dam has not been formally rated for its condition, indicating a need for ongoing monitoring and risk management measures. With a spillway type of "Uncontrolled" and a controlled maximum discharge of 358 cubic feet per second, Petrillo Lake Dam serves as a vital component of the local ecosystem and water resource management in Sullivan County.

As climate change continues to impact water resources and infrastructure, the significance of structures like Petrillo Lake Dam in maintaining recreational opportunities while also safeguarding against potential hazards becomes increasingly apparent. With its serene beauty and functional purpose, this dam exemplifies the delicate balance between human enjoyment and environmental stewardship in the face of a changing climate.