Lakes / Montana / Granite County

Lakes in Granite County, Montana

39 lakes counted in Granite County - the largest is Georgetown Lake at 2,818 acres.

Lakes Counted

2,818 acres

Largest - Georgetown Lake

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

All Counted Lakes

#	Lake	County	Surface Area	Max Depth
1	Georgetown Lake	Granite	2,818 acres	About 25 ft
2	East Fork Reservoir	Granite	372 acres	-
3	Lower Willow Creek Reservoir	Granite	165 acres	-
4	Fred Burr Lake	Granite	143 acres	-
5	Echo Lake	Granite	102 acres	About 25 ft
6	Medicine Lake	Granite	65 acres	-
7	Big Pozega Lake	Granite	53 acres	-
8	Racetrack Lake	Granite	45 acres	-
9	Johnson Lake	Granite	44.2 acres	-
10	Fisher Lake	Granite	31 acres	-
11	Thornton Lake	Granite	29.1 acres	-
12	Carpp Lake	Granite	27 acres	-
13	Edith Lake	Granite	25 acres	-
14	Alpine Lake	Granite	23 acres	-
15	Tamarack Lake	Granite	21 acres	-
16	Moose Lake	Granite	20 acres	-
17	Albicaulis Lake	Granite	17 acres	-
18	Stewart Lake	Granite	15 acres	-
19	Gold Creek Lakes	Granite	15 acres	-
20	Whetstone Lake	Granite	14 acres	-
21	Crystal Lake	Granite	13 acres	-
22	Meadow Lakes	Granite	13 acres	-
23	Sidney Lake	Granite	13 acres	-
24	Little Pozega Lake	Granite	13 acres	-
25	Rainbow Lake	Granite	13 acres	-
26	Kaiser Lake	Granite	11 acres	-
27	Mud Lake	Granite	11 acres	-
28	Fuse Lake	Granite	10 acres	-
29	Ivanhoe Lake	Granite	10 acres	-
30	Dead Lake	Granite	8 acres	-
31	Green Canyon Lake	Granite	7 acres	About 50 ft
32	Porcupine Lake	Granite	7 acres	-
33	Little Fish Lake	Granite	6 acres	-
34	Little Racetrack Lake	Granite	6 acres	-
35	Phyllis Lake	Granite	6 acres	-
36	Goat Mountain Lakes	Granite	5 acres	-
37	Goldberg Reservoir	Granite	5 acres	-
38	Upper Phyllis Lake	Granite	5 acres	-
39	Susie Lake	Granite	3 acres	-

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