Lakes / Montana / Fish Species / Longnose Sucker

Montana Lakes With Longnose Sucker

130 counted Montana lakes list Longnose Sucker 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	Flathead Lake	Lake	122,132 acres	About 380 ft
3	Canyon Ferry Lake	Broadwater	32,773 acres	About 170 ft
4	Lake Koocanusa	Lincoln	28,723 acres	-
5	Hungry Horse Reservoir	Flathead	23,577 acres	-
6	Lake Elwell	Liberty	14,842 acres	About 150 ft
7	Bighorn Lake	Big Horn	12,422.5 acres	About 440 ft
8	Noxon Reservoir	Sanders	7,592 acres	-
9	Lake McDonald	Flathead	6,867 acres	-
10	Clark Canyon Reservoir	Beaverhead	4,815 acres	About 91 ft
11	Lima Reservoir	Beaverhead	4,422 acres	-
12	Nelson Reservoir	Phillips	4,115 acres	-
13	Ennis Lake	Madison	3,692 acres	-
14	Holter Lake	Lewis and Clark	3,667 acres	-
15	Lake Frances	Pondera	3,618 acres	About 43 ft
16	Whitefish Lake	Flathead	3,315 acres	About 220 ft
17	Swan Lake	Lake	3,269 acres	About 120 ft
18	Hauser Lake	Lewis and Clark	3,200 acres	About 65 ft
19	Fresno Reservoir	Hill	3,185 acres	-
20	Little Bitterroot Lake	Flathead	2,970 acres	About 260 ft
21	Upper Red Rock Lake	Beaverhead	2,948 acres	About 5 ft
22	Ashley Lake	Flathead	2,850 acres	About 200 ft
23	Cabinet Gorge Reservoir	Sanders	2,848 acres	-
24	Georgetown Lake	Granite	2,818 acres	About 25 ft
25	Tongue River Reservoir	Big Horn	2,112 acres	-
26	Lake Helena	Lewis and Clark	2,073 acres	About 12 ft
27	Deadmans Basin Reservoir	Wheatland	1,954 acres	-
28	Bowman Lake	Flathead	1,722 acres	-
29	Kintla Lake	Flathead	1,665 acres	-
30	McGregor Lake	Flathead	1,522 acres	About 220 ft
31	Placid Lake	Missoula	1,212 acres	About 93 ft
32	Tally Lake	Flathead	1,211 acres	About 450 ft
33	Bull Lake	Lincoln	1,162 acres	About 60 ft
34	Logging Lake	Flathead	1,113 acres	-
35	Seeley Lake	Missoula	1,031 acres	About 120 ft
36	Thompson Falls Reservoir	Sanders	969 acres	-
37	Martinsdale Reservoir	Meagher	947 acres	-
38	Ruby River Reservoir	Madison	941 acres	-
39	Lake Como	Ravalli	911 acres	-
40	Quartz Lake	Flathead	869 acres	-
41	Lindbergh Lake	Missoula	815 acres	About 120 ft
42	Cooney Reservoir	Carbon	733 acres	-
43	Willow Creek Reservoir	Madison	713 acres	-
44	Upper Holter Lake	Lewis and Clark	695 acres	-
45	Salmon Lake	Missoula	631 acres	About 65 ft
46	Cliff Lake	Madison	608 acres	-
47	Upper Stillwater Lake	Flathead	592 acres	-
48	Dickey Lake	Lincoln	585 acres	About 70 ft
49	Middle Thompson Lake	Lincoln	557 acres	About 160 ft
50	Helena Valley Regulating Reservoir	Lewis and Clark	553 acres	-
51	Lodge Grass Storage Reservoir	Big Horn	534 acres	-
52	Browns Lake	Powell	516 acres	About 25 ft
53	Hubbart Reservoir	Flathead	480 acres	About 60 ft
54	Smith Lake	Flathead	453 acres	-
55	Yellow Water Reservoir	Petroleum	442 acres	-
56	Holland Lake	Missoula	414 acres	About 140 ft
57	Harrison Lake	Flathead	391 acres	-
58	Lake Blaine	Flathead	382 acres	-
59	Lake Sutherlin	Meagher	377 acres	About 51 ft
60	East Fork Reservoir	Granite	372 acres	-
61	Eureka Reservoir	Teton	366 acres	-
62	Nevada Lake	Powell	337 acres	About 65 ft
63	Lebo Lake	Wheatland	309 acres	-
64	Glen Lake	Lincoln	301 acres	About 30 ft
65	Silver Lake	Deer Lodge	300 acres	-
66	Lake Alva	Missoula	298 acres	About 90 ft
67	Upper Thompson Lake	Lincoln	294 acres	About 100 ft
68	Lake Inez	Missoula	288 acres	About 72 ft
69	Elk Lake	Beaverhead	283 acres	About 62 ft
70	Kleinschmidt Lake	Powell	283 acres	-
71	Lower Stillwater Lake	Flathead	250 acres	About 50 ft
72	Ackley Lake	Judith Basin	226 acres	About 39 ft
73	Loon Lake	Lincoln	222 acres	About 114 ft
74	Bair Reservoir	Meagher	221 acres	-
75	Island Lake	Lincoln	211 acres	About 50 ft
76	Dailey Lake	Park	206 acres	About 22 ft
77	Lower Thompson Lake	Lincoln	202 acres	About 140 ft
78	Coopers Lake	Powell	200 acres	About 70 ft
79	Crystal Lake	Lincoln	184 acres	About 140 ft
80	Lower Quartz Lake	Flathead	167 acres	-
81	Lower Willow Creek Reservoir	Granite	165 acres	-
82	Dry Fork Reservoir	Sanders	154 acres	-
83	Lake Five	Flathead	152 acres	About 60 ft
84	Cyclone Lake	Flathead	140 acres	-
85	East Rosebud Lake	Carbon	139 acres	About 20 ft
86	Mussigbrod Lake	Beaverhead	105 acres	About 69 ft
87	Echo Lake	Granite	102 acres	About 25 ft
88	East Fork Reservoir	Fergus	90 acres	-
89	Rogers Lake	Flathead	85 acres	-
90	Twin Lakes	Beaverhead	85 acres	About 46 ft
91	Rainy Lake	Missoula	82 acres	About 29 ft
92	Upper Whitefish Lake	Flathead	80 acres	About 25 ft
93	Lake Marshall	Missoula	80 acres	About 56 ft
94	Stanton Lake	Flathead	79 acres	-
95	Elbow Lake	Missoula	71 acres	-
96	Smith Lake	Lewis and Clark	70 acres	-
97	Lake Elmo	Yellowstone	62 acres	About 16 ft
98	Spoon Lake	Flathead	60 acres	-
99	Blanchard Lake	Missoula	57 acres	-
100	Halfmoon Lake	Flathead	55 acres	-

Showing the 100 largest of 130 counted lakes with Longnose Sucker.

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