Brown Trout Stocked · 15 plants · last May 12, 2026 Best: dawn, day, dusk Duck Lake fishing
Duck Lake fishing has Cutthroat Trout and Brown Trout on the stocking report. It is stocked about 1.3 times a year since 2011, most often in May and June. Species guides list dawn, day, and dusk as the active times.
- Last stocked
- May 12, 2026
- · Brown Trout
- Plants on record
- 20
- Since 2011
- Species recorded
- 2
- Average size
- 3.9 in
- Elevation
- 6,671.1 ft
Fish at Duck Lake
Around the dates Duck Lake is stocked, Open-Meteo's 2016-2025 archive puts mean air temperature at 49°F in June, 39.3°F in May, 58.9°F in July, 57.1°F in August. That is air temperature at these coordinates, not water temperature. Open-Meteo
Brown Trout Stocked · 15 plants · last May 12, 2026 Best: dawn, day, dusk 
Cutthroat Trout Stocked · 5 plants · last October 2, 2025 Last stocked October 2, 2025 · avg 3.2 in · 5 plants
Cutthroat Trout species guideHow Duck Lake is stocked
No plants recorded in 2023.
Fish stocked in 2011
35,320
Fish stocked in 2012
44,267
Fish stocked in 2013
29,797
Fish stocked in 2014
30,163
Fish stocked in 2015
15,270
Fish stocked in 2016
14,921
Fish stocked in 2017
13,049
Fish stocked in 2018
16,929
Fish stocked in 2019
16,444
Fish stocked in 2020
14,318
Fish stocked in 2021
17,604
Fish stocked in 2022
16,673
Fish stocked in 2024
15,738
Fish stocked in 2025
200
Fish stocked in 2026
18,867
Stocking history
| Date | Species | Quantity | Avg. length | Source |
|---|---|---|---|---|
| May 12, 2026 | Brown Trout | 18,867 | 3.36 in | report |
| October 2, 2025 | Cutthroat Trout | 200 | 2.23 in | report |
| May 16, 2024 | Brown Trout | 15,738 | 3.47 in | report |
| May 17, 2022 | Brown Trout | 16,673 | 4.01 in | report |
| June 8, 2021 | Brown Trout | 17,604 | 4.87 in | report |
| June 10, 2020 | Brown Trout | 14,318 | 4.65 in | report |
| August 23, 2019 | Cutthroat Trout | 200 | 1.66 in | report |
| June 5, 2019 | Brown Trout | 16,244 | 4.14 in | report |
| May 30, 2018 | Brown Trout | 16,929 | 4.11 in | report |
| June 7, 2017 | Brown Trout | 13,049 | 4.44 in | report |
| June 7, 2016 | Brown Trout | 14,921 | 4.2 in | report |
| July 30, 2015 | Cutthroat Trout | 200 | 1.76 in | report |
| June 8, 2015 | Brown Trout | 11,769 | 4.11 in | report |
| June 8, 2015 | Brown Trout | 3,301 | 4.28 in | report |
| May 27, 2014 | Brown Trout | 30,163 | 3.89 in | report |
| June 7, 2013 | Brown Trout | 29,797 | 3.99 in | report |
| June 14, 2012 | Brown Trout | 30,767 | 3.93 in | report |
| June 7, 2012 | Cutthroat Trout | 13,500 | 5.59 in | report |
| June 15, 2011 | Brown Trout | 15,320 | 3.95 in | report |
| June 8, 2011 | Cutthroat Trout | 20,000 | 4.78 in | report |
Access and facts
Advisories, closures, regulations and water conditions change. Check the Montana Fish, Wildlife & Parks before you go.
Nearest lakes
Public land at Duck Lake
Duck Lake is inside Bob Marshall Wilderness.
It is 0.5 miles outside the edge of Flathead National Forest.
Boundaries from Public Lands DB, part of the same network.
Common questions
What fish are at Duck Lake?
Fishing Duck Lake usually means Brown Trout: Brown Trout accounts for 15 of 20 plants on record, ahead of Cutthroat Trout. Brown Trout was last stocked May 12, 2026, averaging 4.1 in. Cutthroat Trout was last stocked October 2, 2025, averaging 3.2 in.
When is Duck Lake stocked?
Last stocked May 12, 2026. It is stocked about 1.3 times a year since 2011, most often in May and June. No plants recorded in 2023.
How big are the fish stocked at Duck Lake?
Stocked fish average 3.9 in. Brown Trout average 4.1 in. Cutthroat Trout average 3.2 in.
Which lakes near Duck Lake were stocked more recently?
Ostle Reservoir (16.4 mi) and Tunnel Lake (33.6 mi) were stocked more recently. Tunnel Lake is also stocked with Cutthroat Trout.