Water Monster reports in Wyoming
1 case, 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 · Wind River, Wyoming · 1886
Hunters report seeing a huge serpent-fish hybrid monster at Bull Lake that bellowed and sank into the depths.