Lakes in Lake County, Montana

49 lakes counted in Lake County - the largest is Flathead Lake at 122,132 acres.

Lakes Counted

122,132 acres

Largest - Flathead Lake

Lake County, highlighted, with its largest counted lakes dotted. Outlines from Census boundary data.

All Counted Lakes

#	Lake	County	Surface Area	Max Depth
1	Flathead Lake	Lake	122,132 acres	About 380 ft
2	Swan Lake	Lake	3,269 acres	About 120 ft
3	Pablo Reservoir	Lake	1,650 acres	-
4	Lake Mary Ronan	Lake	1,513 acres	About 40 ft
5	Ninepipe Reservoir	Lake	1,203 acres	-
6	Kicking Horse Reservoir	Lake	657 acres	-
7	Lower Crow Reservoir	Lake	286 acres	-
8	Mission Reservoir	Lake	275 acres	About 70 ft
9	Saint Marys Lake	Lake	273 acres	About 240 ft
10	Loon Lake	Lake	236 acres	-
11	McDonald Lake	Lake	188.3 acres	-
12	Horte Reservoir	Lake	94.9 acres	-
13	Piper Lake	Lake	75.9 acres	-
14	Summit Lake	Lake	68.2 acres	-
15	Black Lake	Lake	61 acres	-
16	Terrace Lake	Lake	59 acres	-
17	Van Lake	Lake	55 acres	About 35 ft
18	First Lake	Lake	51 acres	-
19	Turtle Lake	Lake	49 acres	-
20	Cedar Lake	Lake	47 acres	-
21	Cliff Lake	Lake	46.7 acres	-
22	Lucifer Lake	Lake	45 acres	-
23	Loon Lake	Lake	45 acres	About 52 ft
24	Horseshoe Lake	Lake	41 acres	About 25 ft
25	Skags Lake	Lake	40 acres	-
26	Crow Creek Lakes	Lake	34.8 acres	-
27	Lake of the Clouds	Lake	33.1 acres	-
28	Wymore Lake	Lake	30.4 acres	-
29	Ashley Lakes	Lake	30.1 acres	-
30	Crow Creek Lakes	Lake	29.7 acres	-
31	Row Lake	Lake	26.9 acres	-
32	Jette Lake	Lake	26 acres	About 31 ft
33	Fatty Lake	Lake	22 acres	About 60 ft
34	Peck Lake	Lake	22 acres	About 14 ft
35	Sonielem Lake	Lake	21 acres	-
36	Picture Lake	Lake	19 acres	-
37	Mud Lake	Lake	19 acres	-
38	Pony Lake	Lake	17 acres	-
39	Shay Lake	Lake	17 acres	About 30 ft
40	Disappointment Lake	Lake	15 acres	-
41	Metcalf Lake	Lake	14 acres	-
42	Cat Lake	Lake	12 acres	-
43	Trinkus Lake	Lake	12 acres	-
44	Moore Lake	Lake	12 acres	About 60 ft
45	Rainbow Lake	Lake	8 acres	-
46	Lost Lake	Lake	7 acres	-
47	Twin Lakes	Lake	6 acres	-
48	Bond Lake	Lake	5 acres	-
49	Estes Lake	Lake	4 acres	-

Sources: Montana Fish, Wildlife & Parks lake data; USGS. Verified October 30, 2026.