Petrolia Reservoir Fish Stocking
Montana · 1953–2025 on record
According to Montana fish & wildlife agency, Petrolia Reservoir was last stocked June 24, 2025 with Walleye. Petrolia Reservoir has 74 stocking records on file, spanning 1953–2025, with about 1,855,134 fish stocked over that period.
When Petrolia Reservoir is stocked
Petrolia Reservoir is typically stocked in summer, most often in June — 39 stocking events in that peak month.
Nearby stocked waters
Other stocked waters near Petrolia Reservoir, freshest activity first.
Yellow Water Reservoir
12 mi6 species · 118 records
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Cow Creek Reservoir
10 mi7 species · 72 records
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Payola Reservoir
16 mi1 species · 33 records
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Box Elder Creek Reservoir
12 mi2 species · 54 records
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Manuel Reservoir #2
13 mi1 species · 37 records
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Cotton Dam
15 mi1 species · 11 records
Last stocked May 1999
By species
Stocking history
Most recent stockings first. Dates shown at the precision the agency reported.
| Date | Species | Number | Size | Source |
|---|---|---|---|---|
| June 24, 2025 | Walleye | 9,399 | 1.39" | Montana fish & wildlife agency |
| June 24, 2025 | Walleye | 9,399 | 1.39" | Montana fish & wildlife agency |
| June 26, 2024 | Walleye | 22,262 | 1.49" | Montana fish & wildlife agency |
| July 13, 2023 | Walleye | 20,572 | 2.35" | Montana fish & wildlife agency |
| July 5, 2022 | Walleye | 20,824 | 1.48" | Montana fish & wildlife agency |
| June 30, 2022 | Yellow Perch | 32,190 | 0.8" | Montana fish & wildlife agency |
| June 10, 2022 | Rainbow Trout | 994 | 5.84" | Montana fish & wildlife agency |
| July 6, 2021 | Walleye | 20,048 | 1.79" | Montana fish & wildlife agency |
Show 42 more stocking records →
| Date | Species | Number | Size | Source |
|---|---|---|---|---|
| June 17, 2021 | Rainbow Trout | 2,624 | 8.6" | Montana fish & wildlife agency |
| June 18, 2020 | Walleye | 20,252 | 1.78" | Montana fish & wildlife agency |
| June 19, 2019 | Walleye | 21,593 | 1.36" | Montana fish & wildlife agency |
| July 3, 2018 | Walleye | 7,605 | 2.26" | Montana fish & wildlife agency |
| June 28, 2017 | Walleye | 20,207 | 1.88" | Montana fish & wildlife agency |
| June 28, 2016 | Walleye | 21,743 | 1.72" | Montana fish & wildlife agency |
| June 23, 2015 | Walleye | 20,909 | 1.55" | Montana fish & wildlife agency |
| June 24, 2014 | Walleye | 20,224 | 1.25" | Montana fish & wildlife agency |
| June 19, 2013 | Walleye | 20,079 | 1.5" | Montana fish & wildlife agency |
| July 17, 2012 | Rainbow Trout | 1,605 | 8.73" | Montana fish & wildlife agency |
| July 11, 2011 | Rainbow Trout | 1,912 | 8.76" | Montana fish & wildlife agency |
| June 25, 2010 | Walleye | 20,000 | 1.4" | Montana fish & wildlife agency |
| June 14, 2010 | Rainbow Trout | 10,022 | 7.55" | Montana fish & wildlife agency |
| June 29, 2009 | Walleye | 21,528 | 2" | Montana fish & wildlife agency |
| June 26, 2008 | Walleye | 20,000 | 1.4" | Montana fish & wildlife agency |
| June 21, 2007 | Walleye | 20,055 | 1.5" | Montana fish & wildlife agency |
| June 7, 2006 | Walleye | 22,000 | 1" | Montana fish & wildlife agency |
| April 12, 2006 | Yellow Perch | 690 | 6.5" | Montana fish & wildlife agency |
| June 14, 2005 | Walleye | 20,000 | 1.3" | Montana fish & wildlife agency |
| May 3, 2004 | Walleye | 100,000 | 0.22" | Montana fish & wildlife agency |
| May 21, 2003 | Walleye | 100,000 | 0.22" | Montana fish & wildlife agency |
| May 17, 2002 | Walleye | 100,000 | 0.2" | Montana fish & wildlife agency |
| June 12, 2001 | Walleye | 20,000 | 1.2" | Montana fish & wildlife agency |
| June 14, 2000 | Walleye | 20,000 | 1.2" | Montana fish & wildlife agency |
| June 15, 1999 | Walleye | 20,000 | 1.3" | Montana fish & wildlife agency |
| June 18, 1998 | Walleye | 20,000 | 1.5" | Montana fish & wildlife agency |
| June 17, 1998 | Spottail Shiner | 1,200 | 3" | Montana fish & wildlife agency |
| June 16, 1998 | Spottail Shiner | 2,000 | 2.5" | Montana fish & wildlife agency |
| June 25, 1997 | Walleye | 17,957 | 1.6" | Montana fish & wildlife agency |
| June 11, 1997 | Spottail Shiner | 2,100 | 2.5" | Montana fish & wildlife agency |
| June 20, 1996 | Walleye | 20,002 | 1.3" | Montana fish & wildlife agency |
| June 8, 1996 | Spottail Shiner | 2,000 | 3" | Montana fish & wildlife agency |
| August 15, 1995 | Spottail Shiner | 200 | 1" | Montana fish & wildlife agency |
| June 8, 1995 | Walleye | 20,000 | 1.1" | Montana fish & wildlife agency |
| June 7, 1994 | Walleye | 20,000 | 1.5" | Montana fish & wildlife agency |
| June 14, 1993 | Walleye | 20,000 | 1.2" | Montana fish & wildlife agency |
| June 19, 1991 | Walleye | 10,000 | 1.8" | Montana fish & wildlife agency |
| July 20, 1989 | Yellow Perch | 250 | 5" | Montana fish & wildlife agency |
| April 7, 1988 | Walleye | 150,000 | 0.5" | Montana fish & wildlife agency |
| May 14, 1986 | Walleye | 100,000 | 0 | Montana fish & wildlife agency |
| April 1, 1986 | Northern Pike | 50,000 | 0 | Montana fish & wildlife agency |
| April 30, 1985 | Walleye | 100,000 | 0 | Montana fish & wildlife agency |
Showing 50 of 74 stocking records.
Frequently asked
When was Petrolia Reservoir last stocked?
According to Montana fish & wildlife agency, Petrolia Reservoir was last stocked June 24, 2025 with Walleye.
What fish species are stocked in Petrolia Reservoir?
Petrolia Reservoir is stocked with Walleye, Yellow Perch, Rainbow Trout, Spottail Shiner, Northern Pike, Burbot, Black Crappie, and Largemouth Bass.
What time of year is Petrolia Reservoir stocked?
Petrolia Reservoir is typically stocked in summer, most often in June.
How often is Petrolia Reservoir stocked?
Petrolia Reservoir is stocked intermittently — 74 recorded stockings between 1953 and 2025.
How many fish have been stocked in Petrolia Reservoir?
About 1,855,134 fish have been stocked in Petrolia Reservoir across 74 recorded events since 1953, per Montana fish & wildlife agency.
What size are the fish stocked in Petrolia Reservoir?
Fish stocked in Petrolia Reservoir average about 3.1 inches, based on the sizes the agency reported.