North Dakota /

Harmon Lake

Reservoir in North Dakota · 151 acres · near Harmon

Harmon 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): 2019, 2020 and 2022 to 2026.

state reports compiled by U.S. EPA · checked October 18, 2026

Depth contours in feet from North Dakota Game and Fish (fieldwork 2020); deepest point about 45 ft. Lake levels and bottoms change; not for navigation.

Launches