Montana Lakes With Common Carp

30 counted Montana lakes list Common Carp 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	Medicine Lake	Sheridan	8,931 acres	-
6	Clark Canyon Reservoir	Beaverhead	4,815 acres	About 91 ft
7	Nelson Reservoir	Phillips	4,115 acres	-
8	Holter Lake	Lewis and Clark	3,667 acres	-
9	Hauser Lake	Lewis and Clark	3,200 acres	About 65 ft
10	Freezeout Lake	Teton	2,596 acres	-
11	Tongue River Reservoir	Big Horn	2,112 acres	-
12	Lake Helena	Lewis and Clark	2,073 acres	About 12 ft
13	Deadmans Basin Reservoir	Wheatland	1,954 acres	-
14	Frenchman Reservoir	Phillips	573 acres	-
15	Helena Valley Regulating Reservoir	Lewis and Clark	553 acres	-
16	Petrolia Lake	Petroleum	518 acres	-
17	Yellow Water Reservoir	Petroleum	442 acres	-
18	Wild Horse Reservoir	Phillips	217 acres	-
19	Ester Lake	Phillips	139 acres	-
20	Boxelder Lake	Sheridan	77 acres	About 18 ft
21	Lake Elmo	Yellowstone	62 acres	About 16 ft
22	Fort Peck Trout Pond	Valley	53 acres	-
23	Krieder Reservoir	Garfield	45 acres	-
24	Gartside Reservoir	Richland	44 acres	About 18 ft
25	Anita Reservoir	Yellowstone	37 acres	-
26	Lindsay Reservoir	Dawson	30 acres	-
27	Arapooish Pond	Big Horn	29 acres	-
28	Spotted Eagle Lake	Custer	25 acres	About 10 ft
29	Hollecker Lake	Dawson	9 acres	-
30	McChesney Reservoir	Phillips	4 acres	-

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