Lakes / Montana / Lincoln County

Lakes in Lincoln County, Montana

88 lakes counted in Lincoln County - the largest is Lake Koocanusa at 28,723 acres.

Lakes Counted

28,723 acres

Largest - Lake Koocanusa

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

All Counted Lakes

#	Lake	County	Surface Area	Max Depth
1	Lake Koocanusa	Lincoln	28,723 acres	-
2	Bull Lake	Lincoln	1,162 acres	About 60 ft
3	Dickey Lake	Lincoln	585 acres	About 70 ft
4	Middle Thompson Lake	Lincoln	557 acres	About 160 ft
5	Spar Lake	Lincoln	383 acres	About 200 ft
6	Glen Lake	Lincoln	301 acres	About 30 ft
7	Upper Thompson Lake	Lincoln	294 acres	About 100 ft
8	Loon Lake	Lincoln	222 acres	About 114 ft
9	Sophie Lake	Lincoln	221 acres	About 50 ft
10	Island Lake	Lincoln	211 acres	About 50 ft
11	Lower Thompson Lake	Lincoln	202 acres	About 140 ft
12	Crystal Lake	Lincoln	184 acres	About 140 ft
13	Othorp Lake	Lincoln	162 acres	-
14	Frank Lake	Lincoln	149 acres	About 40 ft
15	Murphy Lake	Lincoln	141 acres	About 25 ft
16	Horseshoe Lake	Lincoln	138 acres	About 130 ft
17	Leigh Lake	Lincoln	129 acres	-
18	Marl Lake	Lincoln	109 acres	-
19	Bull Lake	Lincoln	107 acres	-
20	Okaga Lake	Lincoln	104 acres	-
21	Alkali Lake	Lincoln	101 acres	-
22	Tetrault Lake	Lincoln	96 acres	About 50 ft
23	Double N Lake	Lincoln	71.7 acres	-
24	Savage Lake	Lincoln	71 acres	About 65 ft
25	Thirsty Lake	Lincoln	68 acres	-
26	Upper Cedar Lake	Lincoln	63 acres	-
27	Black Lake	Lincoln	61 acres	-
28	Granite Lake	Lincoln	57 acres	-
29	Barnaby Lake	Lincoln	56.6 acres	-
30	Big Therriault Lake	Lincoln	56 acres	About 80 ft
31	Kilbrennan Lake	Lincoln	55 acres	About 20 ft
32	Alvord Lake	Lincoln	53 acres	-
33	Long Lake	Lincoln	52 acres	About 30 ft
34	Moran Lake	Lincoln	41 acres	About 30 ft
35	Little Sparr Lake	Lincoln	39.8 acres	-
36	Double Lake	Lincoln	37 acres	-
37	Rock Lake	Lincoln	37 acres	About 30 ft
38	Loon Lake	Lincoln	36 acres	-
39	Geiger Lakes	Lincoln	35.8 acres	-
40	Martin Lake	Lincoln	35 acres	About 10 ft
41	Hoskins Lake	Lincoln	35 acres	-
42	Lost Lake	Lincoln	35 acres	-
43	Costich Lake	Lincoln	34.3 acres	-
44	Lake Rene	Lincoln	34 acres	-
45	Howard Lake	Lincoln	33 acres	-
46	Fish Lake	Lincoln	32 acres	About 23 ft
47	Timber Lake	Lincoln	31 acres	-
48	Grob Lake	Lincoln	31 acres	-
49	Little Therriault Lake	Lincoln	28.2 acres	-
50	Troy Dam Reservoir	Lincoln	26.2 acres	-
51	Tooley Lake	Lincoln	26.2 acres	-
52	Loon Lake	Lincoln	26 acres	About 30 ft
53	Dry Lake	Lincoln	25.7 acres	-
54	Milnor Lake	Lincoln	25 acres	-
55	Rainbow Lake	Lincoln	22 acres	-
56	Sylvan Lake	Lincoln	21 acres	-
57	Rainbow Lake	Lincoln	21 acres	-
58	Lick Lake	Lincoln	20 acres	About 10 ft
59	Lower Cedar Lake	Lincoln	19 acres	-
60	Leon Lake	Lincoln	19 acres	About 80 ft
61	Lavon Lake	Lincoln	17 acres	-
62	Phills Lake	Lincoln	16 acres	-
63	Wishbone Lake	Lincoln	16 acres	-
64	Vinal Lake	Lincoln	16 acres	About 43 ft
65	Schoolhouse Lake	Lincoln	15 acres	-
66	Lost Lake	Lincoln	14 acres	-
67	Lost Lake	Lincoln	14 acres	-
68	Bootjack Lake	Lincoln	11 acres	-
69	Weasel Lake	Lincoln	11 acres	-
70	Grouse Lake	Lincoln	10 acres	-
71	Little Loon Lake	Lincoln	9 acres	About 35 ft
72	Bramlet Lake	Lincoln	9 acres	-
73	Swisher Lake	Lincoln	9 acres	-
74	Rattlebone Lake	Lincoln	8 acres	About 30 ft
75	Hidden Lake	Lincoln	8 acres	-
76	Miller Lake	Lincoln	7 acres	-
77	Standard Lake	Lincoln	7 acres	-
78	Tom Poole Lake	Lincoln	7 acres	-
79	Wee Lake	Lincoln	7 acres	-
80	Myron Lake	Lincoln	5 acres	-
81	Snowshoe Lakes	Lincoln	5 acres	-
82	Summerville Lake	Lincoln	4 acres	-
83	Rock Lake	Lincoln	4 acres	-
84	Lake Geneva	Lincoln	3 acres	-
85	Bluebird Lake	Lincoln	3 acres	-
86	Paradise Lake	Lincoln	2 acres	-
87	Shannon Lake	Lincoln	2 acres	-
88	Jumbo Lake	Lincoln	2 acres	-

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