Lakes / Montana / Lewis and Clark County
Lakes in Lewis and Clark County, Montana
36 lakes counted in Lewis and Clark County - the largest is Holter Lake at 3,667 acres.
36
Lakes Counted
3,667 acres
Largest - Holter Lake
Lewis and Clark County, highlighted, with its largest counted lakes dotted. Outlines from Census boundary data.
All Counted Lakes
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Holter Lake | Lewis and Clark | 3,667 acres | - |
| 2 | Hauser Lake | Lewis and Clark | 3,200 acres | About 65 ft |
| 3 | Lake Helena | Lewis and Clark | 2,073 acres | About 12 ft |
| 4 | Willow Creek Reservoir | Lewis and Clark | 1,314 acres | About 50 ft |
| 5 | Gibson Reservoir | Lewis and Clark | 1,289 acres | About 165 ft |
| 6 | Upper Holter Lake | Lewis and Clark | 695 acres | - |
| 7 | Helena Valley Regulating Reservoir | Lewis and Clark | 553 acres | - |
| 8 | Nilan Reservoir | Lewis and Clark | 521 acres | - |
| 9 | Bean Lake | Lewis and Clark | 206 acres | About 21 ft |
| 10 | Gravelly Range Lake | Lewis and Clark | 126.3 acres | - |
| 11 | Chessman Reservoir | Lewis and Clark | 100.8 acres | - |
| 12 | Anderson Lake | Lewis and Clark | 80.1 acres | - |
| 13 | Diversion Lake | Lewis and Clark | 75 acres | - |
| 14 | Smith Lake | Lewis and Clark | 70 acres | - |
| 15 | Connors Lake | Lewis and Clark | 56.8 acres | - |
| 16 | Meyer Lake | Lewis and Clark | 52.9 acres | - |
| 17 | Krone Lake | Lewis and Clark | 43.2 acres | - |
| 18 | Heart Lake | Lewis and Clark | 32 acres | About 50 ft |
| 19 | Bear Lake | Lewis and Clark | 25 acres | - |
| 20 | Smith Lake | Lewis and Clark | 24 acres | - |
| 21 | Krohn Lake | Lewis and Clark | 21 acres | - |
| 22 | Wood Lake | Lewis and Clark | 20 acres | - |
| 23 | Parker Lake | Lewis and Clark | 19 acres | About 4 ft |
| 24 | Silver King Lake | Lewis and Clark | 18 acres | - |
| 25 | Camp Lake | Lewis and Clark | 16 acres | About 14 ft |
| 26 | Meadow Lake | Lewis and Clark | 15 acres | About 3 ft |
| 27 | Bighorn Lake | Lewis and Clark | 14 acres | About 50 ft |
| 28 | Canyon Lake | Lewis and Clark | 13 acres | About 6 ft |
| 29 | Lake Levale | Lewis and Clark | 12 acres | - |
| 30 | Upper Copper Lake | Lewis and Clark | 10 acres | About 35 ft |
| 31 | Two Point Lake | Lewis and Clark | 9 acres | About 10 ft |
| 32 | Sock Lake | Lewis and Clark | 9 acres | - |
| 33 | Webb Lake | Lewis and Clark | 7 acres | About 4 ft |
| 34 | Twin Lakes | Lewis and Clark | 5 acres | About 8 ft |
| 35 | Renshaw Lake | Lewis and Clark | 4 acres | - |
| 36 | Snowbank Lake | Lewis and Clark | 3 acres | - |
Sources: Montana Fish, Wildlife & Parks lake data; USGS. Verified October 30, 2026.