Martinsdale Reservoir fishing

Fishing at Martinsdale Reservoir has Rainbow Trout, Cutthroat Trout, and Brown Trout on the stocking report. It is stocked about 2.9 times a year since 2011, most often in May and June. Species guides list dawn and dusk for Rainbow Trout and dawn, day, and dusk for Brown Trout.

Last stocked

May 28, 2026

Plants on record

46

Since 2011

Species recorded

3

Average size

4.3 in

Elevation

4,781.2 ft

Access and facts

Nearest town
Martinsdale

About 947-acre reservoir 1 mile east of Martinsdale on the county road.

Sources: shore_notes , nearest_town , fishing_notes , fishing_notes , watch_outs

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How Martinsdale Reservoir is stocked

The first plant of the year usually falls in the second week of May. In 2026 it was May 14, 2026, about when it usually is.

Bair Reservoir (17.1 mi), Chief Joseph Pond (20.9 mi), and Lake Sutherlin (25.3 mi) were stocked more recently. Bair Reservoir is also stocked with Rainbow Trout and Cutthroat Trout, Chief Joseph Pond is also stocked with Rainbow Trout, and Lake Sutherlin is also stocked with Rainbow Trout.

Fish at Martinsdale Reservoir

Fishing Martinsdale Reservoir is most likely to be for Rainbow Trout. Rainbow Trout accounts for 41 of 46 plants on record, ahead of Cutthroat Trout and one more.

Around the dates Martinsdale Reservoir is stocked, Open-Meteo's 2016-2025 archive puts mean air temperature at 48.3°F in May, 58.2°F in June, 56.1°F in September, 41.9°F in October. That is air temperature at these coordinates, not water temperature. Open-Meteo

Rainbow Trout 41 plants
Plants
41 of 46
Last stocked
May 28, 2026
Average length
4.3 in

Seasons and rigs are on the Rainbow Trout guide.

Cutthroat Trout 3 plants
Plants
3 of 46
Last stocked
June 10, 2014
Average length
3.9 in

Seasons and rigs are on the Cutthroat Trout guide.

Brown Trout 2 plants
Plants
2 of 46
Last stocked
May 17, 2022
Average length
3.8 in

Seasons and rigs are on the Brown Trout guide.

Fishing Martinsdale Reservoir

Martinsdale Reservoir has a size of 946.7 acres. It is one of three reservoirs built in the 1930s to help control the river's flow, located near the confluence of the North and South Forks. Fishing pressure data shows 6670 angler days were recorded in 2021.

Sources: myfwp.mt.gov , en.wikipedia.org

What to watch for

This waterbody has a fish consumption advisory.

Fish stocked per year

  • 70,0002011
  • 70,3842012
  • 87,2122013
  • 77,8342014
  • 108,1432015
  • 72,4412016
  • 71,2832017
  • 63,1462018
  • 70,7632019
  • 70,1562020
  • 58,7592021
  • 65,1542022
  • 52,9222023
  • 56,5132024
  • 55,0002025
  • 55,0002026

Stocking history

Showing 15 of 46 plants Showing 46 plants

Source: Montana Fish, Wildlife & Parks.
Date Species Quantity Avg. length Source
May 28, 2026 Rainbow Trout 29,728 5.25 in report
May 14, 2026 Rainbow Trout 25,272 5.27 in report
May 21, 2025 Rainbow Trout 20,569 5.34 in report
May 20, 2025 Rainbow Trout 34,431 5.27 in report
May 21, 2024 Rainbow Trout 28,743 4.83 in report
May 21, 2024 Rainbow Trout 27,770 4.87 in report
May 31, 2023 Rainbow Trout 10,366 4.76 in report
May 25, 2023 Rainbow Trout 42,556 4.85 in report
October 6, 2022 Rainbow Trout 5,277 4.63 in report
May 18, 2022 Rainbow Trout 49,522 3.75 in report
May 17, 2022 Brown Trout 10,355 3.86 in report
August 17, 2021 Rainbow Trout 3,130 3.73 in report
May 11, 2021 Rainbow Trout 55,629 4.3 in report
October 1, 2020 Rainbow Trout 15,016 4.45 in report
May 4, 2020 Rainbow Trout 23,611 3.96 in report
May 4, 2020 Rainbow Trout 25,493 3.99 in report
May 4, 2020 Rainbow Trout 6,036 3.73 in report
September 25, 2019 Rainbow Trout 14,814 4.23 in report
June 6, 2019 Rainbow Trout 3,523 4.5 in report
May 23, 2019 Rainbow Trout 17,145 3.94 in report
May 13, 2019 Rainbow Trout 35,281 4.07 in report
September 20, 2018 Rainbow Trout 28,270 5.49 in report
June 28, 2018 Rainbow Trout 4,836 5.11 in report
May 14, 2018 Rainbow Trout 870 4.06 in report
May 14, 2018 Rainbow Trout 29,170 4.17 in report
September 18, 2017 Rainbow Trout 36,272 4.75 in report
May 2, 2017 Rainbow Trout 22,555 3.96 in report
May 2, 2017 Rainbow Trout 12,456 3.89 in report
September 21, 2016 Rainbow Trout 37,438 4.85 in report
May 13, 2016 Rainbow Trout 31,502 3.98 in report
May 13, 2016 Rainbow Trout 3,501 5.07 in report
October 29, 2015 Rainbow Trout 24,830 4.48 in report
May 19, 2015 Rainbow Trout 25,262 4.08 in report
May 19, 2015 Brown Trout 12,803 3.78 in report
May 14, 2015 Rainbow Trout 45,248 3.94 in report
June 10, 2014 Cutthroat Trout 7,000 4.63 in report
May 20, 2014 Rainbow Trout 29,892 4.18 in report
May 19, 2014 Rainbow Trout 40,942 3.97 in report
October 30, 2013 Cutthroat Trout 10,187 2.57 in report
June 19, 2013 Cutthroat Trout 7,000 4.54 in report
May 21, 2013 Rainbow Trout 40,037 4.09 in report
May 21, 2013 Rainbow Trout 29,988 4.24 in report
May 7, 2012 Rainbow Trout 45,000 3.6 in report
May 7, 2012 Rainbow Trout 25,384 3.4 in report
May 11, 2011 Rainbow Trout 35,000 3.5 in report
May 11, 2011 Rainbow Trout 35,000 3.5 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.

Nearest lakes