The two main lakes are 'meromictic,' meaning they do not undergo annual spring and fall overturns, preserving unique bottom water layers.
The water's deep blue-green color is a result of high concentrations of dissolved limestone from the surrounding bedrock.
The park contains a section of old-growth forest, containing hemlocks and beeches that are over 200 years old.
The 18-hole golf course is widely regarded as one of the finest public courses in the United States, utilizing dramatic glacial landforms.
The park is situated on a plateau that features distinct drumlins, which are elongated hills formed by glacial ice movement.
Green Lakes State Park is centered around two meromictic lakes, which are rare bodies of water where the surface and bottom layers of water do not intermix. The lakes are glacial in origin and notable for their striking turquoise color caused by high calcium carbonate levels. The park features an 18-hole golf course designed by Robert Trent Jones Sr. that utilizes the natural glacial topography. Over 15 miles of trails offer access to old-growth hemlock-beech forests that have never been logged. The park serves as a significant stop for migratory birds, particularly during spring and fall seasons. Recreational facilities include a designated swimming beach, boat rentals, and multiple picnic areas. Visitors can access a variety of terrains ranging from flat lakeside paths to steep, challenging wooded ridges. The park remains a year-round destination with cross-country skiing permitted on groomed trails during winter months. It covers approximately 1,950 acres of land in Onondaga County.
The elevated outlook point on the Green Lakes Trail providing a clear vantage over the main lake's turquoise expanse.
Bring polarized sunglasses to better see through the surface reflection of the turquoise water.
Check for trail conditions at the park office, as some paths can become muddy and slippery after rainfall.
Arrive early on summer weekends, as the parking lots for the beach area frequently reach capacity by midday.
Do not attempt to swim in areas outside the designated beach, as the lakes have steep drop-offs and cold temperatures.
Swimming beach is open only during the summer season; golf course is seasonal and closes during winter months.
Stay on marked trails to protect the fragile hemlock root systems and prevent erosion; swimming is permitted only in designated, guarded beach areas.
