Lakes / Montana / Meagher County

Lakes in Meagher County, Montana

24 lakes counted in Meagher County - the largest is Martinsdale Reservoir at 947 acres.

Lakes Counted

947 acres

Largest - Martinsdale Reservoir

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

All Counted Lakes

#	Lake	County	Surface Area	Max Depth
1	Martinsdale Reservoir	Meagher	947 acres	-
2	Lake Sutherlin	Meagher	377 acres	About 51 ft
3	Newlan Creek Reservoir	Meagher	264.9 acres	-
4	Bair Reservoir	Meagher	221 acres	-
5	Higgins Reservoir	Meagher	99 acres	-
6	Voldseth Reservoir	Meagher	82.9 acres	-
7	Wertz Reservoir	Meagher	76.4 acres	-
8	Jackson Lake	Meagher	35.6 acres	-
9	Hanson Reservoir	Meagher	30 acres	-
10	Hamen Reservoir	Meagher	28.6 acres	-
11	Stoyanoff Lake	Meagher	28.2 acres	-
12	Keep Cool Reservoir	Meagher	25.9 acres	-
13	Bonanza Reservoir	Meagher	24 acres	-
14	Forest Lake	Meagher	21 acres	-
15	Grace Lake	Meagher	17 acres	-
16	Flagstaff Reservoir	Meagher	13 acres	-
17	Hidden Lake	Meagher	12 acres	-
18	Doggett Reservoir	Meagher	9 acres	-
19	Buckingham Reservoir	Meagher	9 acres	-
20	Camas Lake	Meagher	8 acres	-
21	Gipsy Lake	Meagher	7 acres	-
22	Upper Baldy Lake	Meagher	7 acres	-
23	Castle Lake	Meagher	2 acres	-
24	Crater Lake	Meagher	2 acres	-

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