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Cooney Reservoir Fish Stocking

Montana · 1937–2026 on record

Source: Montana fish & wildlife agency· updated 2026-05-21

According to Montana fish & wildlife agency, Cooney Reservoir was last stocked May 21, 2026 with Rainbow Trout. Cooney Reservoir has 638 stocking records on file, spanning 1937–2026, with about 17,481,001 fish stocked over that period.

May 21, 2026
Last stocked
17,481,001
Fish stocked
4
Species
638
Stocking records

When Cooney Reservoir is stocked

Cooney Reservoir is typically stocked in spring, most often in April — 184 stocking events in that peak month.

How Cooney Reservoir's stockings spread across the calendar year, based on the 500 most recent records.

Nearby stocked waters

Other stocked waters near Cooney Reservoir, freshest activity first.

Nelson Pond #3

11 mi

1 species · 1 records

Last stocked June 2020

Nelson Pond #1

12 mi

2 species · 2 records

Last stocked June 2020

West Rosebud Creek

12 mi

3 species · 152 records

Last stocked July 2009

Red Lodge Creek

8 mi

3 species · 76 records

Last stocked July 1983

West Red Lodge Creek

9 mi

2 species · 6 records

Last stocked October 1982

East Rosebud Creek

12 mi

2 species · 161 records

Last stocked June 1981

Stocking history

Most recent stockings first. Dates shown at the precision the agency reported.

DateSpeciesNumberSizeSource
May 21, 2026Rainbow Trout5,1819"Montana fish & wildlife agency
May 20, 2026Rainbow Trout7,8509"Montana fish & wildlife agency
March 9, 2026Rainbow Trout9,9592.4"Montana fish & wildlife agency
October 16, 2025Rainbow Trout5,5259.67"Montana fish & wildlife agency
October 14, 2025Rainbow Trout4,41011.64"Montana fish & wildlife agency
October 14, 2025Rainbow Trout4,41011.64"Montana fish & wildlife agency
October 14, 2025Rainbow Trout4,41011.64"Montana fish & wildlife agency
October 14, 2025Rainbow Trout4,41011.64"Montana fish & wildlife agency
Show 42 more stocking records →
DateSpeciesNumberSizeSource
October 13, 2025Rainbow Trout3,40012"Montana fish & wildlife agency
May 20, 2025Rainbow Trout8,0019.6"Montana fish & wildlife agency
May 20, 2025Rainbow Trout7,4389.64"Montana fish & wildlife agency
May 20, 2025Rainbow Trout8,5989.75"Montana fish & wildlife agency
May 19, 2025Rainbow Trout7,2909.85"Montana fish & wildlife agency
May 19, 2025Rainbow Trout8,1929.85"Montana fish & wildlife agency
September 4, 2024Rainbow Trout57212.44"Montana fish & wildlife agency
September 3, 2024Rainbow Trout1,17012.44"Montana fish & wildlife agency
May 30, 2024Rainbow Trout7,3009.27"Montana fish & wildlife agency
May 29, 2024Rainbow Trout4,6539.38"Montana fish & wildlife agency
May 29, 2024Rainbow Trout3,2669.08"Montana fish & wildlife agency
May 28, 2024Rainbow Trout9,1549.27"Montana fish & wildlife agency
May 28, 2024Rainbow Trout8,4939.34"Montana fish & wildlife agency
October 5, 2023Rainbow Trout8,3709.09"Montana fish & wildlife agency
October 4, 2023Rainbow Trout8,4508.94"Montana fish & wildlife agency
October 4, 2023Rainbow Trout8,8028.94"Montana fish & wildlife agency
May 31, 2023Rainbow Trout10,7288.04"Montana fish & wildlife agency
May 31, 2023Rainbow Trout4007.37"Montana fish & wildlife agency
May 31, 2023Rainbow Trout3,8517.37"Montana fish & wildlife agency
May 29, 2023Rainbow Trout14,8047.85"Montana fish & wildlife agency
May 29, 2023Rainbow Trout13,2938.11"Montana fish & wildlife agency
June 2, 2022Rainbow Trout13,7287.35"Montana fish & wildlife agency
June 1, 2022Rainbow Trout13,1567.35"Montana fish & wildlife agency
October 18, 2021Rainbow Trout11,0898.37"Montana fish & wildlife agency
October 18, 2021Rainbow Trout9,4148.4"Montana fish & wildlife agency
October 18, 2021Rainbow Trout8,7908.35"Montana fish & wildlife agency
June 4, 2021Rainbow Trout7,2097.58"Montana fish & wildlife agency
June 4, 2021Rainbow Trout7,2097.55"Montana fish & wildlife agency
June 2, 2021Rainbow Trout7,1547.69"Montana fish & wildlife agency
June 2, 2021Rainbow Trout7,1287.61"Montana fish & wildlife agency
June 1, 2021Rainbow Trout6,8217.7"Montana fish & wildlife agency
June 1, 2021Rainbow Trout7,1567.57"Montana fish & wildlife agency
September 18, 2020Rainbow Trout6,6648.3"Montana fish & wildlife agency
September 18, 2020Rainbow Trout10,8688.03"Montana fish & wildlife agency
June 4, 2020Rainbow Trout2,2818.54"Montana fish & wildlife agency
June 3, 2020Rainbow Trout7,4808.54"Montana fish & wildlife agency
June 2, 2020Rainbow Trout6,9608.99"Montana fish & wildlife agency
June 1, 2020Rainbow Trout6,3209.03"Montana fish & wildlife agency
May 22, 2020Rainbow Trout8498.57"Montana fish & wildlife agency
May 21, 2020Rainbow Trout7,5658.57"Montana fish & wildlife agency
May 21, 2020Rainbow Trout7,7478.51"Montana fish & wildlife agency
May 20, 2020Rainbow Trout6,3368.37"Montana fish & wildlife agency

Showing 50 of 500 stocking records.

Frequently asked

When was Cooney Reservoir last stocked?

According to Montana fish & wildlife agency, Cooney Reservoir was last stocked May 21, 2026 with Rainbow Trout.

What fish species are stocked in Cooney Reservoir?

Cooney Reservoir is stocked with Rainbow Trout, Cutthroat Trout, Walleye, and Coho Salmon.

What time of year is Cooney Reservoir stocked?

Cooney Reservoir is typically stocked in spring, most often in April.

How often is Cooney Reservoir stocked?

Cooney Reservoir has been stocked about 7 times a year — 638 recorded stockings between 1937 and 2026.

How many fish have been stocked in Cooney Reservoir?

About 17,481,001 fish have been stocked in Cooney Reservoir across 638 recorded events since 1937, per Montana fish & wildlife agency.

What size are the fish stocked in Cooney Reservoir?

Fish stocked in Cooney Reservoir average about 6.2 inches, based on the sizes the agency reported.

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How this is calculated: compiled automatically from Montana fish & wildlife agency open data — normalized, date-validated, and shown only at the precision the agency reported. Sources & methodology →

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