Cottonwood Lake
Lake in South Dakota · 1,551 acres · near Redfield
Cottonwood Lake has 2 boat ramps 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
Launches
- Cottonwood Northeast PWA · Boat ramp · near Redfield · free
- Cottonwood Southwest PWA · Boat ramp · near Redfield · free
Community
Where people who fish, boat and paddle Cottonwood Lake talk about it. Lake associations, clubs and local groups will be added as we find them.