There are at least nine named lakes and reservoirs in Petroleum County, Montana, United States.
Lakes Little Bear Lake, , el. Wild Horse Lake, , el.
Reservoirs Headman-Field Reservoir, , el. Petrolia Lake, , el. Prtrolla Lake, , el. War Horse Lake, , el. War Horse Lake, , el. War Horse Lake, , el. Yellow Water Reservoir, , el.
See also List of lakes in Montana
Notes