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Washington stocking report

Cooper Lake

38 records Last stocked: May 26, 2026

The short answer

Cooper Lake was last stocked on May 26, 2026: 3,000 Rainbow Trout (Legals, 2.4 fish/lb).

County
Kittitas
Species on record
Rainbow Trout, Cutthroat Trout
Records
38 stocking events
Official source
Washington Department of Fish and Wildlife report

Location map

Cooper Lake location context

Approximate · county context
Adams County Asotin County Benton County Chelan County Clallam County Clark County Columbia County Cowlitz County Douglas County Ferry County Franklin County Garfield County Grant County Grays Harbor County Island County Jefferson County King County Kitsap County Kittitas County Klickitat County Lewis County Lincoln County Mason County Okanogan County Pacific County Pend Oreille County Pierce County San Juan County Skagit County Skamania County Snohomish County Spokane County Stevens County Thurston County Wahkiakum County Walla Walla County Whatcom County Whitman County Yakima County WA Cooper Lake, Kittitas County Cooper Lake Thorp Lake, Kittitas County Thorp Lake Twin Lakes Upper S29, Kittitas County Twin Lakes Upper S29 Lake Lillian, Kittitas County Lake Lillian Summit Chief Lake, Kittitas County Summit Chief Lake Talus Slope Lake, Kittitas County Talus Slope Lake Deer Lakes (1), Kittitas County Deer Lakes (1) Kiwanas Pond, Kittitas County Kiwanas Pond Hi Box Lake T22, Kittitas County Hi Box Lake T22 Kittitas County
Cooper LakeKittitas County Thorp LakeKittitas County Twin Lakes Upper S29Kittitas County Lake LillianKittitas County Summit Chief LakeKittitas County

Pins use the finest location published with the stocking record. County-level pins show area context, not an exact access point; confirm access and directions with the official agency source.

Agency records

Full stocking history

DateSpeciesFishSizeHatcheryNotes
May 26, 2026 Rainbow Trout 3,000 Legals, 2.4 fish/lb NACHES HATCHERY
May 28, 2025 Rainbow Trout 3,000 Legals, 2.4 fish/lb NACHES HATCHERY
May 28, 2024 Rainbow Trout 3,000 Legals, 2.4 fish/lb NACHES HATCHERY
May 30, 2023 Rainbow Trout 3,000 Legals, 2.4 fish/lb NACHES HATCHERY
June 8, 2022 Rainbow Trout 3,000 Legals, 2.4 fish/lb NACHES HATCHERY
June 10, 2020 Rainbow Trout 2,544 Legals, 2.4 fish/lb NACHES HATCHERY
May 20, 2020 Rainbow Trout 2,520 Legals, 2.4 fish/lb NACHES HATCHERY
June 5, 2019 Rainbow Trout 2,496 Legals, 2.4 fish/lb NACHES HATCHERY
May 20, 2019 Rainbow Trout 2,520 Legals, 2.4 fish/lb NACHES HATCHERY
June 11, 2018 Rainbow Trout 2,750 Legals, 2.5 fish/lb NACHES HATCHERY
May 21, 2018 Rainbow Trout 2,500 Legals, 2.5 fish/lb NACHES HATCHERY
June 20, 2017 Rainbow Trout 283 Legals, 0.3 fish/lb TROUT LODGE COMMERCIAL released by WDFW - EN COOPS
June 6, 2017 Rainbow Trout 4,020 Legals, 2.4 fish/lb NACHES HATCHERY
May 30, 2017 Rainbow Trout 3,500 Legals, 2.5 fish/lb NACHES HATCHERY
June 2, 2016 Rainbow Trout 3,000 Legals, 2.5 fish/lb NACHES HATCHERY
June 1, 2016 Rainbow Trout 417 Legals, 0.67 fish/lb TROUT LODGE COMMERCIAL released by WDFW - EN COOPS
May 18, 2016 Rainbow Trout 3,350 Legals, 2.5 fish/lb NACHES HATCHERY
June 16, 2015 Rainbow Trout 250 Legals, 0.67 fish/lb TROUT LODGE COMMERCIAL released by WDFW - EN COOPS
June 2, 2015 Rainbow Trout 3,875 Legals, 2.5 fish/lb NACHES HATCHERY
May 19, 2015 Rainbow Trout 500 Legals, 0.67 fish/lb TROUT LODGE COMMERCIAL released by WDFW - EN COOPS
May 4, 2015 Rainbow Trout 3,250 Legals, 2.5 fish/lb NACHES HATCHERY
June 10, 2014 Rainbow Trout 2,750 Legals, 2.5 fish/lb NACHES HATCHERY
May 28, 2014 Rainbow Trout 3,400 Legals, 2.5 fish/lb NACHES HATCHERY
May 22, 2014 Rainbow Trout 750 Legals, 0.67 fish/lb TROUT LODGE COMMERCIAL released by WDFW - EN COOPS
June 12, 2013 Rainbow Trout 2,750 Legals, 2.5 fish/lb NACHES HATCHERY
June 4, 2013 Rainbow Trout 2,137 Legals, 2.5 fish/lb NACHES HATCHERY
May 22, 2013 Rainbow Trout 750 Legals, 0.7 fish/lb TROUT LODGE COMMERCIAL released by WDFW - EN COOPS
May 21, 2013 Rainbow Trout 2,970 Legals, 2.7 fish/lb NACHES HATCHERY
June 18, 2012 Rainbow Trout 5,520 Legals, 2.4 fish/lb NACHES HATCHERY
June 13, 2012 Rainbow Trout 2,640 Legals, 2.4 fish/lb NACHES HATCHERY
June 12, 2012 Rainbow Trout 765 Legals, 0.7 fish/lb TROUT LODGE COMMERCIAL released by WDFW - EN COOPS
August 24, 2010 Cutthroat Trout 12,168 Fry, 468 fish/lb CHELAN HATCHERY Westslope run
August 28, 2006 Cutthroat Trout 12,116 Fry, 477 fish/lb CHELAN HATCHERY Westslope run
September 11, 2003 Cutthroat Trout 11,259 Fry, 208.5 fish/lb CHELAN HATCHERY Westslope run
August 29, 2000 Cutthroat Trout 12,662 Fry, 487 fish/lb CHELAN HATCHERY Westslope run
August 29, 2000 Cutthroat Trout 12,662 Fry, 487 fish/lb CHELAN HATCHERY Westslope run
August 20, 1997 Cutthroat Trout 12,089 Fry, 314 fish/lb CHELAN HATCHERY Westslope run
August 25, 1995 Cutthroat Trout 4,860 Fry, 900 fish/lb CHELAN HATCHERY Westslope run

Records shown exactly as published by Washington Department of Fish and Wildlife. An event missing here does not mean the water was not stocked - some plants go unreported or are published elsewhere.

Data source: Washington Department of Fish and Wildlife. Last updated: .

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