Lake Ninevah, also known as Patch Lake, is a private water resource located in Mount Holly, Vermont. This picturesque lake is nestled in the Rutland County area, with its primary purpose being recreation. The dam constructed in 1930 is primarily an earth dam with stone core types, standing at a height of 13 feet and a length of 176 feet. With a storage capacity of 1500 acre-feet and a surface area of 237 acres, Lake Ninevah offers a tranquil setting for outdoor enthusiasts to enjoy various water activities.

Managed by the Vermont Department of Environmental Conservation (DEC), Lake Ninevah is regulated, inspected, and enforced by the state agency to ensure its safety and compliance with environmental standards. The dam, spanning Patch Brook, plays a significant role in water management and flood control in the region, with a drainage area of 1.2 square miles. Despite being classified as having a significant hazard potential, the dam's condition was assessed as fair as of July 2018, indicating ongoing efforts to maintain its integrity and safety for the surrounding community.

With its rich history dating back to the early 20th century, Lake Ninevah continues to be a beloved destination for water and climate enthusiasts seeking a peaceful retreat in the heart of Vermont. As one of the state's regulated water resources, the lake offers a blend of natural beauty and recreational opportunities, inviting visitors to immerse themselves in its serene surroundings while appreciating the careful management and maintenance efforts that preserve this valuable ecosystem for future generations.