Lakes / Montana
Montana Lakes
1,695 lakes and counting - every figure from the Montana Fish, Wildlife & Parks.
1,695
Lakes Counted
233,053 acres
Largest - Fort Peck Lake
Rankings
Featured Lake
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Fort Peck Lake | Valley | 233,053 acres | - |
Lakes Near Cities
Browse by County
Beaverhead County (106)Big Horn County (7)Blaine County (24)Broadwater County (2)Carbon County (145)Carter County (7)Cascade County (14)Chouteau County (21)Custer County (5)Daniels County (3)Dawson County (7)Deer Lodge County (13)Fallon County (3)Fergus County (6)Flathead County (174)Gallatin County (21)Garfield County (9)Glacier County (82)Granite County (39)Hill County (26)Jefferson County (11)Judith Basin County (3)Lake County (49)Lewis and Clark County (36)Liberty County (6)Lincoln County (88)Madison County (66)McCone County (7)Meagher County (24)Mineral County (22)Missoula County (79)Musselshell County (6)Park County (123)Petroleum County (4)Phillips County (57)Pondera County (14)Powder River County (7)Powell County (35)Prairie County (7)Ravalli County (57)Richland County (20)Roosevelt County (11)Rosebud County (18)Sanders County (37)Sheridan County (24)Silver Bow County (5)Stillwater County (52)Sweet Grass County (34)Teton County (23)Toole County (14)Valley County (31)Wheatland County (5)Wibaux County (1)Yellowstone County (5)
Source: Montana Fish, Wildlife & Parks lake data. Verified October 30, 2026.