Montana /
McGregor Lake
Lake in Montana · 1,717 acres
McGregor Lake has 1 boat ramp listed as public.
Past algal blooms
Harmful algal blooms reported on this water (state reports compiled by U.S. EPA): 2025.
state reports compiled by U.S. EPA · checked October 18, 2026
Depth contours in feet from Montana FWP; deepest point about 220 ft. Lake levels and bottoms change; not for navigation.
Launches
- Mc Gregor Lake Boating Site · Boat ramp · free
Community
Where people who fish, boat and paddle McGregor Lake talk about it. Lake associations, clubs and local groups will be added as we find them.