Cerulean Lake
Cerulean Lake is located in Glacier National Park, in the U. S. state of Montana. Cerulean Lake is in a cirque surrounded by high peaks including Rainbow Peak to the west, which rises more than  above the lake. Melt from Rainbow Glacier to the west enters Cerulean lake via Rainbow Creek and other sources. See also
List of lakes in Flathead County, Montana (M-Z)

References

Lakes of Glacier National Park (U.S.)
Lakes of Flathead County, Montana