Petrolia Reservoir fishing

Fishing at Petrolia Reservoir has Rainbow Trout, Walleye, and Yellow Perch on the stocking report. It is stocked about 1.3 times a year since 2011, most often in June and July. Species guides list dawn and dusk for Rainbow Trout, dawn, dusk, and night for Walleye, and dawn, day, and dusk for Yellow Perch.

Last stocked

June 24, 2025

Plants on record

19

Since 2011

Species recorded

3

Average size

2.9 in

Elevation

2,886.7 ft

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How Petrolia Reservoir is stocked

The first plant of the year usually falls in the fourth week of June. In 2025 it was June 24, 2025, about when it usually is.

Yellow Water Reservoir (11.6 mi), Payola Reservoir (15.9 mi), Drag Creek Reservoir (31.3 mi), and Kreider Reservoir #2 (39.7 mi) were stocked more recently. Yellow Water Reservoir is also stocked with Rainbow Trout and Kreider Reservoir #2 is also stocked with Rainbow Trout.

Fish at Petrolia Reservoir

Fishing Petrolia Reservoir is most likely to be for Walleye. Walleye accounts for 14 of 19 plants on record, ahead of Rainbow Trout and one more.

Around the dates Petrolia Reservoir is stocked, Open-Meteo's 2016-2025 archive puts mean air temperature at 66.5°F in June, 75.4°F in July. That is air temperature at these coordinates, not water temperature. Open-Meteo

Walleye 14 plants
Plants
14 of 19
Last stocked
June 24, 2025
Average length
1.7 in

Seasons and rigs are on the Walleye guide.

Rainbow Trout 4 plants
Plants
4 of 19
Last stocked
June 10, 2022
Average length
8 in

Seasons and rigs are on the Rainbow Trout guide.

Yellow Perch 1 plant
Plants
1 of 19
Last stocked
June 30, 2022
Average length
0.8 in

Seasons and rigs are on the Yellow Perch guide.

Fish stocked per year

  • 1,9122011
  • 1,6052012
  • 20,0792013
  • 20,2242014
  • 20,9092015
  • 21,7432016
  • 20,2072017
  • 7,6052018
  • 21,5932019
  • 20,2522020
  • 22,6722021
  • 54,0082022
  • 20,5722023
  • 22,2622024
  • 18,7982025

Stocking history

Showing 15 of 19 plants Showing 19 plants

Source: Montana Fish, Wildlife & Parks.
Date Species Quantity Avg. length Source
June 24, 2025 Walleye 9,399 1.39 in report
June 24, 2025 Walleye 9,399 1.39 in report
June 26, 2024 Walleye 22,262 1.49 in report
July 13, 2023 Walleye 20,572 2.35 in report
July 5, 2022 Walleye 20,824 1.48 in report
June 30, 2022 Yellow Perch 32,190 0.8 in report
June 10, 2022 Rainbow Trout 994 5.84 in report
July 6, 2021 Walleye 20,048 1.79 in report
June 17, 2021 Rainbow Trout 2,624 8.6 in report
June 18, 2020 Walleye 20,252 1.78 in report
June 19, 2019 Walleye 21,593 1.36 in report
July 3, 2018 Walleye 7,605 2.26 in report
June 28, 2017 Walleye 20,207 1.88 in report
June 28, 2016 Walleye 21,743 1.72 in report
June 23, 2015 Walleye 20,909 1.55 in report
June 24, 2014 Walleye 20,224 1.25 in report
June 19, 2013 Walleye 20,079 1.5 in report
July 17, 2012 Rainbow Trout 1,605 8.73 in report
July 11, 2011 Rainbow Trout 1,912 8.76 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