New York /
Upper Lake Chateaugay
Lake in New York · 2,643 acres · near Merrill
Upper Lake Chateaugay has 1 boat ramp listed as public.
Invasive species
NYS DEC records curly-leaf pondweed (latest 2009) and Eurasian watermilfoil (latest 2024) in this water. Clean, drain and dry your boat, trailer and gear before you leave, and do not move water, plants or live bait to another water.
NYS DEC · checked October 18, 2026
Past algal blooms
Harmful algal blooms reported on this water (state reports compiled by U.S. EPA): 2024.
state reports compiled by U.S. EPA · checked October 18, 2026
Launches
- Upper Chateaugay Lake Boat Launch · Boat ramp · near Merrill
Community
Where people who fish, boat and paddle Upper Lake Chateaugay talk about it. Lake associations, clubs and local groups will be added as we find them.