Cutthroat Trout Stocked · 13 plants · last August 8, 2025 Last stocked August 8, 2025 · avg 1.5 in · 13 plants
Cutthroat Trout species guideSylvia Lake fishing
Sylvia Lake fishing has Arctic Grayling and Cutthroat Trout on the stocking report. It is stocked about 1.5 times a year since 2011, most often in June and August.
- Last stocked
- August 8, 2025
- · Cutthroat Trout
- Plants on record
- 22
- Since 2011
- Species recorded
- 2
- Average size
- 1.3 in
- Elevation
- 4,915.6 ft
Fish at Sylvia Lake
Around the dates Sylvia Lake is stocked, Open-Meteo's 2016-2025 archive puts mean air temperature at 62.4°F in August, 54.5°F in June, 52.8°F in September, 63.9°F in July. That is air temperature at these coordinates, not water temperature. Open-Meteo
Cutthroat Trout Stocked · 13 plants · last August 8, 2025 
Arctic Grayling Stocked · 9 plants · last June 22, 2023 Last stocked June 22, 2023 · avg 1 in · 9 plants
Arctic Grayling species guideHow Sylvia Lake is stocked
No plants recorded in 2020.
Fish stocked in 2011
27,125
Fish stocked in 2012
12,003
Fish stocked in 2013
11,319
Fish stocked in 2014
2,100
Fish stocked in 2015
11,979
Fish stocked in 2016
10,000
Fish stocked in 2017
4,098
Fish stocked in 2018
2,000
Fish stocked in 2019
11,500
Fish stocked in 2021
12,000
Fish stocked in 2022
12,008
Fish stocked in 2023
11,400
Fish stocked in 2024
2,000
Fish stocked in 2025
2,000
Stocking history
| Date | Species | Quantity | Avg. length | Source |
|---|---|---|---|---|
| August 8, 2025 | Cutthroat Trout | 2,000 | 1.5 in | report |
| September 4, 2024 | Cutthroat Trout | 2,000 | 1.48 in | report |
| June 22, 2023 | Arctic Grayling | 11,400 | 1 in | report |
| July 13, 2022 | Cutthroat Trout | 1,998 | 1.23 in | report |
| July 13, 2022 | Arctic Grayling | 10,010 | 1.54 in | report |
| September 1, 2021 | Cutthroat Trout | 2,000 | 2 in | report |
| June 3, 2021 | Arctic Grayling | 10,000 | 0.95 in | report |
| August 5, 2019 | Cutthroat Trout | 1,500 | 1.21 in | report |
| June 3, 2019 | Arctic Grayling | 10,000 | 0.25 in | report |
| August 2, 2018 | Cutthroat Trout | 2,000 | 1.5 in | report |
| August 30, 2017 | Cutthroat Trout | 1,998 | 1.62 in | report |
| August 30, 2017 | Cutthroat Trout | 2,100 | 2 in | report |
| June 30, 2016 | Arctic Grayling | 10,000 | 1.12 in | report |
| August 27, 2015 | Cutthroat Trout | 1,829 | 1.65 in | report |
| June 22, 2015 | Arctic Grayling | 10,150 | 1.1 in | report |
| September 5, 2014 | Cutthroat Trout | 2,100 | 1.52 in | report |
| August 5, 2013 | Cutthroat Trout | 1,319 | 1.1 in | report |
| June 19, 2013 | Arctic Grayling | 10,000 | 1 in | report |
| August 30, 2012 | Cutthroat Trout | 2,003 | 1.48 in | report |
| June 6, 2012 | Arctic Grayling | 10,000 | 1 in | report |
| August 11, 2011 | Cutthroat Trout | 2,125 | 1.43 in | report |
| June 1, 2011 | Arctic Grayling | 25,000 | 1 in | report |
Access and facts
- Nearest town
- Whitefish
- Boat ramp
- Yes
- Fee required
- No
- Facilities
- camping, restrooms
Flathead NF's Sylvia Lake Campground, 33 miles from Whitefish: Hwy 93 northwest, Farm to Market Rd, Star Meadows Rd (FS 539), then FS 113/538B for 3.5 miles. Three sites with tables and fire rings, a vault toilet, a small steel-and-wood canoe/kayak launch, no fee.
Drafted by AI from the cited sources and checked before publishing.
Advisories, closures, regulations and water conditions change. Check the Montana Fish, Wildlife & Parks before you go.
Nearest lakes
Public land at Sylvia Lake
Sylvia Lake is less than 0.1 miles outside the edge of Flathead National Forest.
Boundaries from Public Lands DB, part of the same network.
Common questions
What fish are at Sylvia Lake?
Fishing Sylvia Lake usually means Cutthroat Trout: Cutthroat Trout accounts for 13 of 22 plants on record, ahead of Arctic Grayling. Cutthroat Trout was last stocked August 8, 2025, averaging 1.5 in. Arctic Grayling was last stocked June 22, 2023, averaging 1 in.
When is Sylvia Lake stocked?
Last stocked August 8, 2025. It is stocked about 1.5 times a year since 2011, most often in June and August. No plants recorded in 2020.
How big are the fish stocked at Sylvia Lake?
Stocked fish average 1.3 in. Cutthroat Trout average 1.5 in. Arctic Grayling average 1 in.
How do you get on Sylvia Lake?
There is a boat ramp and no fee is required. The nearest town is Whitefish. Facilities include camping and restrooms. Flathead NF's Sylvia Lake Campground, 33 miles from Whitefish: Hwy 93 northwest, Farm to Market Rd, Star Meadows Rd (FS 539), then FS 113/538B for 3.5 miles. Three sites with tables and fire rings, a vault toilet, a small steel-and-wood canoe/kayak launch, no fee.
Which lakes near Sylvia Lake were stocked more recently?
Bootjack Lake (7.4 mi), Smith Lake (11 mi), Loon Lake (12.2 mi), and Bull Lake (14.2 mi) were stocked more recently. Bootjack Lake is also stocked with Cutthroat Trout, Smith Lake is also stocked with Cutthroat Trout, Loon Lake is also stocked with Cutthroat Trout, and Bull Lake is also stocked with Cutthroat Trout.