Clinton County
Chazy Lake
On Chazy Lake there are a series of three free campsites located beyond the gated end of Wilfred Kingdom Road.
Goldsmith Road
Schuyler Island
Another state owned island in Lake Champlain is Schuyler Island, a 137-acre island located about 2 miles north-east of Port Douglas Boat Launch.
https://andyarthur.org/lake-champlain
https://dec.ny.gov/lands/105779.html
Valcour Island
Located a 1/2 mile off the shoreline in Lake Champlain, the 945 acre Valcour Island is home to 26 designated campsites along the shoreline and several hiking trails. Parts of the island are quite rocky, with certain points more then 90 feet above the lake.
For more about Valcour Island, see the DEC website: https://www.dec.ny.gov/animals/32055.html