Grouse Lake fishing

Fishing at Grouse Lake has Cutthroat Trout and Brook Trout on the stocking report. It is stocked about 1.1 times a year since 2011, most often in July and August. Species guides list dawn, day, and dusk as the active times.

Last stocked

May 7, 2025

Plants on record

17

Since 2011

Species recorded

2

Average size

2.2 in

Elevation

2,931.1 ft

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How Grouse Lake is stocked

The first plant of the year usually falls in the second week of August. In 2025 it was May 7, 2025, earlier than usual.

No plants recorded in 2013, 2018, and 2020.

Troy Kids Pond (6.8 mi), Spar Lake (8 mi), Libby Pond (16.4 mi), and Triangle Pond (24.5 mi) were stocked more recently. Troy Kids Pond is also stocked with Cutthroat Trout, Spar Lake is also stocked with Cutthroat Trout, and Libby Pond is also stocked with Cutthroat Trout.

Fish at Grouse Lake

Fishing Grouse Lake is most likely to be for Cutthroat Trout. Cutthroat Trout accounts for 11 of 17 plants on record, ahead of Brook Trout.

Around the dates Grouse Lake is stocked, Open-Meteo's 2016-2025 archive puts mean air temperature at 68°F in August, 69°F in July, 58.6°F in September, 60.6°F in June. That is air temperature at these coordinates, not water temperature. Open-Meteo

Cutthroat Trout 11 plants
Plants
11 of 17
Last stocked
August 26, 2024
Average length
1.5 in

Seasons and rigs are on the Cutthroat Trout guide.

Brook Trout 6 plants
Plants
6 of 17
Last stocked
May 7, 2025
Average length
3.4 in

Seasons and rigs are on the Brook Trout guide.

Fish stocked per year

  • 1,0102011
  • 9522012
  • 1,0202014
  • 2,4962015
  • 4,1382016
  • 9892017
  • 2,4402019
  • 1,9942021
  • 2,0042022
  • 1,0002023
  • 1,0002024
  • 1,0002025

Stocking history

Showing 15 of 17 plants Showing 17 plants

Source: Montana Fish, Wildlife & Parks.
Date Species Quantity Avg. length Source
May 7, 2025 Brook Trout 1,000 3.43 in report
August 26, 2024 Cutthroat Trout 1,000 1.5 in report
July 15, 2023 Cutthroat Trout 1,000 1.14 in report
July 20, 2022 Cutthroat Trout 1,003 1.25 in report
June 9, 2022 Brook Trout 1,001 2.31 in report
September 13, 2021 Brook Trout 994 3.1 in report
August 11, 2021 Cutthroat Trout 1,000 2 in report
August 5, 2019 Cutthroat Trout 1,000 1.21 in report
June 27, 2019 Brook Trout 1,440 3 in report
September 21, 2017 Cutthroat Trout 989 2 in report
August 25, 2016 Cutthroat Trout 2,738 2.2 in report
August 25, 2016 Brook Trout 1,400 6 in report
July 16, 2015 Cutthroat Trout 1,008 1.05 in report
July 15, 2015 Brook Trout 1,488 2.5 in report
July 28, 2014 Cutthroat Trout 1,020 0.94 in report
September 5, 2012 Cutthroat Trout 952 1.6 in report
August 8, 2011 Cutthroat Trout 1,010 1.52 in report
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Species stocked here

Depth-by-season, top lures, and bait notes for each species stocked here are on its own species guide, linked above.

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