Montana Lakes With Flathead Chub

14 counted Montana lakes list Flathead Chub in Montana Fish, Wildlife & Parks records. The largest is Fort Peck Lake at 233,053 acres.

#	Lake	County	Surface Area	Max Depth
1	Fort Peck Lake	Valley	233,053 acres	-
2	Canyon Ferry Lake	Broadwater	32,773 acres	About 170 ft
3	Lake Elwell	Liberty	14,842 acres	About 150 ft
4	Bighorn Lake	Big Horn	12,422.5 acres	About 440 ft
5	Fresno Reservoir	Hill	3,185 acres	-
6	Deadmans Basin Reservoir	Wheatland	1,954 acres	-
7	Petrolia Lake	Petroleum	518 acres	-
8	Lake Elmo	Yellowstone	62 acres	About 16 ft
9	Anita Reservoir	Yellowstone	37 acres	-
10	Spotted Eagle Lake	Custer	25 acres	About 10 ft
11	Grasshopper Reservoir	Blaine	23 acres	-
12	Broadview Pond	Yellowstone	21 acres	-
13	Jakes Reservoir	Fergus	18 acres	-
14	Hollecker Lake	Dawson	9 acres	-

Source: Montana Fish, Wildlife & Parks lake data. Verified October 30, 2026.