Water Monster reports in North Dakota
3 cases, best-documented first. Page 1 of 1.
We map claims, not creatures. A case is what some source says someone saw or heard, with the link to that source. It is not proof that anything was there, and a retelling counts once, not as a second sighting.

Water Monster · Stark County, North Dakota · 1915
Witnesses report seeing a fifty to sixty-foot long serpent basking on the surface of Devils Lake near Chautauqua.

Water Monster · Spiritwood Lake, North Dakota · 1895
Witnesses report seeing a great sea serpent in Spiritwood Lake during a storm, with one man hooking it and the boat circling the lake while trying to capture it.

Water Monster · North Dakota · 1922
A man reportedly saw a red, hairy, one-eyed horned creature in the Missouri River that caused him to lose his reason and die.