East Fork Reservoir fishing

Fishing at East Fork Reservoir has Brown Trout, Cutthroat Trout, Rainbow Trout, and Largemouth Bass on the stocking report. It is stocked about 3.7 times a year since 2011, most often in June and September. Species guides list dawn, day, and dusk for Brown Trout and dawn and dusk for Rainbow Trout and Largemouth Bass.

Last stocked

August 7, 2025

Plants on record

56

Since 2011

Species recorded

4

Average size

7.1 in

Elevation

5,479.7 ft

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How East Fork Reservoir is stocked

The first plant of the year usually falls in the first week of June. In 2025 it was June 12, 2025, about when it usually is.

No plants recorded in 2012.

Spring Meadow Lake (13.4 mi), Helena Valley Regulating Reservoir (18 mi), and Glen Lake (21.5 mi) were stocked more recently. Spring Meadow Lake is also stocked with Cutthroat Trout and Rainbow Trout and Glen Lake is also stocked with Rainbow Trout.

Fish at East Fork Reservoir

Fishing East Fork Reservoir is most likely to be for Cutthroat Trout. Cutthroat Trout accounts for 38 of 56 plants on record, ahead of Rainbow Trout and 2 more.

Around the dates East Fork Reservoir is stocked, Open-Meteo's 2016-2025 archive puts mean air temperature at 55.4°F in June, 53.4°F in September, 45.5°F in May, 62.4°F in August. That is air temperature at these coordinates, not water temperature. Open-Meteo

Cutthroat Trout 38 plants
Plants
38 of 56
Last stocked
June 20, 2025
Average length
6.8 in

Seasons and rigs are on the Cutthroat Trout guide.

Rainbow Trout 12 plants
Plants
12 of 56
Last stocked
October 5, 2021
Average length
10.3 in

Seasons and rigs are on the Rainbow Trout guide.

Brown Trout 3 plants
Plants
3 of 56
Last stocked
June 19, 2015
Average length
4.4 in

Seasons and rigs are on the Brown Trout guide.

Largemouth Bass 3 plants
Plants
3 of 56
Last stocked
August 7, 2025
Average length
1.8 in

Seasons and rigs are on the Largemouth Bass guide.

Fish stocked per year

  • 5,0182011
  • 35,7182013
  • 28,5712014
  • 36,3912015
  • 27,5002016
  • 25,2062017
  • 37,8552018
  • 30,3142019
  • 35,3802020
  • 33,2882021
  • 32,7952022
  • 10,0002023
  • 10,7502024
  • 14,9972025

Stocking history

Showing 15 of 56 plants Showing 56 plants

Source: Montana Fish, Wildlife & Parks.
Date Species Quantity Avg. length Source
August 7, 2025 Largemouth Bass 5,000 1.56 in report
June 20, 2025 Cutthroat Trout 5,000 6.82 in report
June 12, 2025 Cutthroat Trout 1,665 6.82 in report
June 12, 2025 Cutthroat Trout 3,332 7.42 in report
August 9, 2024 Largemouth Bass 5,000 1.35 in report
May 31, 2024 Cutthroat Trout 5,750 8.3 in report
June 6, 2023 Cutthroat Trout 10,000 8.41 in report
July 19, 2022 Cutthroat Trout 2,795 8.73 in report
June 7, 2022 Cutthroat Trout 15,000 5.54 in report
June 7, 2022 Cutthroat Trout 15,000 4.97 in report
October 5, 2021 Rainbow Trout 389 12.7 in report
September 9, 2021 Cutthroat Trout 3,300 10.83 in report
June 2, 2021 Cutthroat Trout 8,619 5.68 in report
June 2, 2021 Cutthroat Trout 13,000 4.71 in report
June 1, 2021 Cutthroat Trout 4,590 5.68 in report
May 11, 2021 Rainbow Trout 3,390 4.19 in report
October 21, 2020 Cutthroat Trout 2,442 7.56 in report
June 17, 2020 Rainbow Trout 2,938 8.21 in report
May 27, 2020 Cutthroat Trout 15,000 6.46 in report
May 27, 2020 Cutthroat Trout 15,000 4.67 in report
September 17, 2019 Rainbow Trout 314 13.15 in report
May 9, 2019 Cutthroat Trout 15,000 5.08 in report
May 9, 2019 Cutthroat Trout 15,000 4.79 in report
September 27, 2018 Cutthroat Trout 1,086 9.95 in report
September 27, 2018 Cutthroat Trout 2,860 6.87 in report
September 4, 2018 Rainbow Trout 95 14.41 in report
September 4, 2018 Rainbow Trout 47 12.26 in report
May 24, 2018 Cutthroat Trout 8,556 4.84 in report
May 23, 2018 Cutthroat Trout 16,158 5.86 in report
May 10, 2018 Cutthroat Trout 3,737 4.08 in report
May 10, 2018 Cutthroat Trout 5,316 5.82 in report
September 27, 2017 Cutthroat Trout 8,650 6.93 in report
September 27, 2017 Cutthroat Trout 2,100 6.93 in report
September 21, 2017 Cutthroat Trout 430 11.69 in report
September 20, 2017 Cutthroat Trout 12,900 6.93 in report
September 18, 2017 Rainbow Trout 1,004 13.09 in report
June 21, 2017 Rainbow Trout 122 13.37 in report
August 18, 2016 Cutthroat Trout 12,500 6.48 in report
June 20, 2016 Cutthroat Trout 15,000 4.99 in report
October 1, 2015 Cutthroat Trout 15,000 7.19 in report
October 1, 2015 Cutthroat Trout 2,591 10.58 in report
June 19, 2015 Cutthroat Trout 15,000 4.46 in report
June 19, 2015 Brown Trout 3,800 4.5 in report
August 6, 2014 Cutthroat Trout 5,400 5.83 in report
August 6, 2014 Cutthroat Trout 588 9.9 in report
July 14, 2014 Cutthroat Trout 2,583 9.56 in report
June 9, 2014 Cutthroat Trout 20,000 4.63 in report
October 31, 2013 Rainbow Trout 1,267 12.8 in report
September 13, 2013 Rainbow Trout 2,553 6.11 in report
September 13, 2013 Rainbow Trout 2,450 6.11 in report
July 23, 2013 Largemouth Bass 5,000 2.4 in report
July 8, 2013 Cutthroat Trout 7,000 5.88 in report
June 24, 2013 Rainbow Trout 1,002 7.19 in report
June 24, 2013 Brown Trout 3,000 4.48 in report
June 7, 2013 Cutthroat Trout 13,446 4.95 in report
June 14, 2011 Brown Trout 5,018 4.12 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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