East Fork Reservoir fishing

East Fork Reservoir fishing has Brown Trout, Cutthroat Trout, Rainbow Trout, and Largemouth Bass on the stocking report. It is stocked about 3.6 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.

AI-generated illustration, not a photo of this lake
Last stocked
June 15, 2026
· Cutthroat Trout
Plants on record
57
Since 2011
Species recorded
4
Average size
7.2 in
Elevation
5,479.7 ft

Fish at East Fork Reservoir

4 stocked · 0 confirmed present

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

Rainbow Trout Stocked · 12 plants · last October 5, 2021 Best: dawn, dusk

Last stocked October 5, 2021 · avg 10.3 in · 12 plants

Best: dawn, dusk

Rainbow Trout species guide
Brown Trout Stocked · 3 plants · last June 19, 2015 Best: dawn, day, dusk

Last stocked June 19, 2015 · avg 4.4 in · 3 plants

Best: dawn, day, dusk

Brown Trout species guide
Largemouth Bass Stocked · 3 plants · last August 7, 2025 Best: dawn, dusk

Last stocked August 7, 2025 · avg 1.8 in · 3 plants

Best: dawn, dusk

Largemouth Bass species guide

How East Fork Reservoir is stocked

Source: Montana Fish, Wildlife & Parks.

No plants recorded in 2012.

Fish stocked in 2011

5,018

Fish stocked in 2013

35,718

Fish stocked in 2014

28,571

Fish stocked in 2015

36,391

Fish stocked in 2016

27,500

Fish stocked in 2017

25,206

Fish stocked in 2018

37,855

Fish stocked in 2019

30,314

Fish stocked in 2020

35,380

Fish stocked in 2021

33,288

Fish stocked in 2022

32,795

Fish stocked in 2023

10,000

Fish stocked in 2024

10,750

Fish stocked in 2025

14,997

Fish stocked in 2026

1,050

Stocking history

Source: Montana Fish, Wildlife & Parks.
Date Species Quantity Avg. length Source
June 15, 2026Cutthroat Trout1,0509.41 inreport
August 7, 2025Largemouth Bass5,0001.56 inreport
June 20, 2025Cutthroat Trout5,0006.82 inreport
June 12, 2025Cutthroat Trout3,3327.42 inreport
June 12, 2025Cutthroat Trout1,6656.82 inreport
August 9, 2024Largemouth Bass5,0001.35 inreport
May 31, 2024Cutthroat Trout5,7508.3 inreport
June 6, 2023Cutthroat Trout10,0008.41 inreport
July 19, 2022Cutthroat Trout2,7958.73 inreport
June 7, 2022Cutthroat Trout15,0004.97 inreport
June 7, 2022Cutthroat Trout15,0005.54 inreport
October 5, 2021Rainbow Trout38912.7 inreport
September 9, 2021Cutthroat Trout3,30010.83 inreport
June 2, 2021Cutthroat Trout8,6195.68 inreport
June 2, 2021Cutthroat Trout13,0004.71 inreport
June 1, 2021Cutthroat Trout4,5905.68 inreport
May 11, 2021Rainbow Trout3,3904.19 inreport
October 21, 2020Cutthroat Trout2,4427.56 inreport
June 17, 2020Rainbow Trout2,9388.21 inreport
May 27, 2020Cutthroat Trout15,0004.67 inreport
May 27, 2020Cutthroat Trout15,0006.46 inreport
September 17, 2019Rainbow Trout31413.15 inreport
May 9, 2019Cutthroat Trout15,0005.08 inreport
May 9, 2019Cutthroat Trout15,0004.79 inreport
September 27, 2018Cutthroat Trout2,8606.87 inreport
September 27, 2018Cutthroat Trout1,0869.95 inreport
September 4, 2018Rainbow Trout9514.41 inreport
September 4, 2018Rainbow Trout4712.26 inreport
May 24, 2018Cutthroat Trout8,5564.84 inreport
May 23, 2018Cutthroat Trout16,1585.86 inreport
May 10, 2018Cutthroat Trout5,3165.82 inreport
May 10, 2018Cutthroat Trout3,7374.08 inreport
September 27, 2017Cutthroat Trout8,6506.93 inreport
September 27, 2017Cutthroat Trout2,1006.93 inreport
September 21, 2017Cutthroat Trout43011.69 inreport
September 20, 2017Cutthroat Trout12,9006.93 inreport
September 18, 2017Rainbow Trout1,00413.09 inreport
June 21, 2017Rainbow Trout12213.37 inreport
August 18, 2016Cutthroat Trout12,5006.48 inreport
June 20, 2016Cutthroat Trout15,0004.99 inreport
October 1, 2015Cutthroat Trout2,59110.58 inreport
October 1, 2015Cutthroat Trout15,0007.19 inreport
June 19, 2015Cutthroat Trout15,0004.46 inreport
June 19, 2015Brown Trout3,8004.5 inreport
August 6, 2014Cutthroat Trout5889.9 inreport
August 6, 2014Cutthroat Trout5,4005.83 inreport
July 14, 2014Cutthroat Trout2,5839.56 inreport
June 9, 2014Cutthroat Trout20,0004.63 inreport
October 31, 2013Rainbow Trout1,26712.8 inreport
September 13, 2013Rainbow Trout2,5536.11 inreport
September 13, 2013Rainbow Trout2,4506.11 inreport
July 23, 2013Largemouth Bass5,0002.4 inreport
July 8, 2013Cutthroat Trout7,0005.88 inreport
June 24, 2013Rainbow Trout1,0027.19 inreport
June 24, 2013Brown Trout3,0004.48 inreport
June 7, 2013Cutthroat Trout13,4464.95 inreport
June 14, 2011Brown Trout5,0184.12 inreport

Access and facts

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Advisories, closures, regulations and water conditions change. Check the Montana Fish, Wildlife & Parks before you go.

Nearest lakes

Park Lake 4.7 mi last stocked July 28, 2021 Spring Meadow Lake 13.8 mi last stocked September 8, 2026 Helena Valley Regulating Reservoir 18.9 mi last stocked May 12, 2026 Glen Lake 19 mi last stocked September 10, 2026 Island Lake 20.2 mi last stocked September 30, 2024

Common questions

What fish are at East Fork Reservoir?

Fishing East Fork Reservoir usually means Cutthroat Trout: Cutthroat Trout accounts for 39 of 57 plants on record, ahead of Rainbow Trout and 2 more. Cutthroat Trout was last stocked June 15, 2026, averaging 6.8 in. Rainbow Trout was last stocked October 5, 2021, averaging 10.3 in. Brown Trout was last stocked June 19, 2015, averaging 4.4 in. Largemouth Bass was last stocked August 7, 2025, averaging 1.8 in.

When is East Fork Reservoir stocked?

Last stocked June 15, 2026. It is stocked about 3.6 times a year since 2011, most often in June and September. No plants recorded in 2012.

How big are the fish stocked at East Fork Reservoir?

Stocked fish average 7.2 in. Cutthroat Trout average 6.8 in. Rainbow Trout average 10.3 in. Brown Trout average 4.4 in. Largemouth Bass average 1.8 in.

Which lakes near East Fork Reservoir were stocked more recently?

Spring Meadow Lake (13.8 mi) and Glen Lake (19 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.