Lakes / Montana / Fish Species / Walleye

Montana Lakes With Walleye

40 counted Montana lakes list Walleye 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	Noxon Reservoir	Sanders	7,592 acres	-
6	Nelson Reservoir	Phillips	4,115 acres	-
7	Holter Lake	Lewis and Clark	3,667 acres	-
8	Lake Frances	Pondera	3,618 acres	About 43 ft
9	Hauser Lake	Lewis and Clark	3,200 acres	About 65 ft
10	Fresno Reservoir	Hill	3,185 acres	-
11	Cabinet Gorge Reservoir	Sanders	2,848 acres	-
12	Tongue River Reservoir	Big Horn	2,112 acres	-
13	Lake Helena	Lewis and Clark	2,073 acres	About 12 ft
14	Cooney Reservoir	Carbon	733 acres	-
15	Upper Holter Lake	Lewis and Clark	695 acres	-
16	Frenchman Reservoir	Phillips	573 acres	-
17	Petrolia Lake	Petroleum	518 acres	-
18	Yellow Water Reservoir	Petroleum	442 acres	-
19	Farmers Reservoir	Teton	419 acres	-
20	Rainbow Lake	Sanders	209 acres	About 30 ft
21	Dailey Lake	Park	206 acres	About 22 ft
22	Castle Rock Lake	Rosebud	155 acres	About 40 ft
23	Ester Lake	Phillips	139 acres	-
24	South Sandstone Reservoir	Fallon	114 acres	About 20 ft
25	Little Warm Reservoir	Phillips	91 acres	-
26	Bailey Reservoir	Hill	85 acres	About 30 ft
27	Boxelder Lake	Sheridan	77 acres	About 18 ft
28	Boneau Reservoir	Chouteau	63 acres	-
29	Fort Peck Trout Pond	Valley	53 acres	-
30	Bearpaw Lake	Hill	48 acres	-
31	Krieder Reservoir	Garfield	45 acres	-
32	Gartside Reservoir	Richland	44 acres	About 18 ft
33	Lindsay Reservoir	Dawson	30 acres	-
34	Spotted Eagle Lake	Custer	25 acres	About 10 ft
35	Whitetail Reservoir	Daniels	25 acres	-
36	Jakes Reservoir	Fergus	18 acres	-
37	Wheatcroft Reservoir	Garfield	15 acres	-
38	Hollecker Lake	Dawson	9 acres	-
39	Dry Fork Reservoir	Chouteau	5 acres	-
40	Gaskill Reservoir	Powder River	2 acres	-

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