Brook Trout Stocked · 10 plants · last May 8, 2026 Best: dawn, day, dusk Halfmoon Lake fishing
Halfmoon Lake fishing has Largemouth Bass and Brook Trout on the stocking report. Also recorded: Pumpkinseed, Yellow Perch, and Longnose Sucker. It is stocked about 0.7 times a year since 2011, most often in May and July. Species guides list dawn and dusk for Largemouth Bass, dawn, day, and dusk for Brook Trout and Yellow Perch, and dusk for Pumpkinseed.
- Last stocked
- May 8, 2026
- · Brook Trout
- Plants on record
- 11
- Since 2011
- Species stocked
- 2 (+3 also recorded)
- Average size
- 2.7 in
- Elevation
- 3,268.8 ft
Fish at Halfmoon Lake
Around the dates Halfmoon Lake is stocked, Open-Meteo's 2016-2025 archive puts mean air temperature at 51.5°F in May, 67.8°F in July, 40°F in April, 59.3°F in June. That is air temperature at these coordinates, not water temperature. Open-Meteo
Brook Trout Stocked · 10 plants · last May 8, 2026 Best: dawn, day, dusk 
Largemouth Bass Stocked · 1 plant · last July 27, 2011 Best: dawn, dusk 
Pumpkinseed Confirmed present Best: dusk Best: dusk
Pumpkinseed species guide
Yellow Perch Confirmed present Best: dawn, day, dusk Best: dawn, day, dusk
Yellow Perch species guide Longnose Sucker Confirmed present
How Halfmoon Lake is stocked
No plants recorded in 2012, 2013, 2014, 2023, and 2024.
Fish stocked in 2011
5,500
Fish stocked in 2015
5,005
Fish stocked in 2016
5,500
Fish stocked in 2017
5,000
Fish stocked in 2018
5,000
Fish stocked in 2019
3,500
Fish stocked in 2020
3,950
Fish stocked in 2021
3,600
Fish stocked in 2022
4,000
Fish stocked in 2025
4,000
Fish stocked in 2026
4,435
Stocking history
| Date | Species | Quantity | Avg. length | Source |
|---|---|---|---|---|
| May 8, 2026 | Brook Trout | 4,435 | 3.64 in | report |
| April 27, 2025 | Brook Trout | 4,000 | 2.96 in | report |
| May 25, 2022 | Brook Trout | 4,000 | 2.23 in | report |
| May 19, 2021 | Brook Trout | 3,600 | 2.75 in | report |
| July 13, 2020 | Brook Trout | 3,950 | 3 in | report |
| May 20, 2019 | Brook Trout | 3,500 | 2.5 in | report |
| June 28, 2018 | Brook Trout | 5,000 | 5 in | report |
| May 1, 2017 | Brook Trout | 5,000 | 2.43 in | report |
| May 12, 2016 | Brook Trout | 5,500 | 1.97 in | report |
| May 26, 2015 | Brook Trout | 5,005 | 2 in | report |
| July 27, 2011 | Largemouth Bass | 5,500 | 1.5 in | report |
Access and facts
Advisories, closures, regulations and water conditions change. Check the Montana Fish, Wildlife & Parks before you go.
Nearest lakes
Camping near Halfmoon Lake
Campgrounds within 15 miles of Halfmoon Lake's mapped point, nearest first: Fish Creek Campground (5.3 miles), Emery Bay Campground (9.9 miles), and Big Creek Campground (11.4 miles), each with its own campground page on campgroundsdb.com.
Straight-line distances.
Public land at Halfmoon Lake
Halfmoon Lake is 0.2 miles outside the edge of Flathead National Forest.
Boundaries from Public Lands DB, part of the same network.
Common questions
What fish are at Halfmoon Lake?
Fishing Halfmoon Lake usually means Brook Trout: Brook Trout accounts for 10 of 11 plants on record, ahead of Largemouth Bass. Brook Trout was last stocked May 8, 2026, averaging 2.8 in. Largemouth Bass was last stocked July 27, 2011, averaging 1.5 in. Pumpkinseed, Yellow Perch, and Longnose Sucker are recorded here outside the stocking reports.
When is Halfmoon Lake stocked?
Last stocked May 8, 2026. It is stocked about 0.7 times a year since 2011, most often in May and July. No plants recorded in 2012, 2013, 2014, 2023, and 2024.
How big are the fish stocked at Halfmoon Lake?
Stocked fish average 2.7 in. Brook Trout average 2.8 in. Largemouth Bass average 1.5 in.
Which lakes near Halfmoon Lake were stocked more recently?
Lion Lake (7.1 mi) was stocked more recently.