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Montana stocking report

Triangle Lake

22 records Last stocked: August 5, 2025

The short answer

Triangle Lake was last stocked on August 5, 2025: 790 Yellowstone Cutthroat Trout (2.34 in avg).

County
Carbon
Species on record
Yellowstone Cutthroat Trout
Records
22 stocking events
Official source
Montana Fish, Wildlife & Parks report

Location map

Triangle Lake location context

Approximate · county context
Beaverhead County Big Horn County Blaine County Broadwater County Carbon County Carter County Cascade County Chouteau County Custer County Daniels County Dawson County Deer Lodge County Fallon County Fergus County Flathead County Gallatin County Garfield County Glacier County Golden Valley County Granite County Hill County Jefferson County Judith Basin County Lake County Lewis and Clark County Liberty County Lincoln County Madison County McCone County Meagher County Mineral County Missoula County Musselshell County Park County Petroleum County Phillips County Pondera County Powder River County Powell County Prairie County Ravalli County Richland County Roosevelt County Rosebud County Sanders County Sheridan County Silver Bow County Stillwater County Sweet Grass County Teton County Toole County Treasure County Valley County Wheatland County Wibaux County Yellowstone County MT Triangle Lake, Carbon County Triangle Lake Greenough Lake, Carbon County Greenough Lake Wild Bill Lake, Carbon County Wild Bill Lake Cooney Reservoir, Carbon County Cooney Reservoir Big Butte Lake, Carbon County Big Butte Lake Desolation Lake, Carbon County Desolation Lake Albino Lake, Carbon County Albino Lake Black Canyon Lake, Carbon County Black Canyon Lake Golden Lake, Carbon County Golden Lake Carbon County
Triangle LakeCarbon County Greenough LakeCarbon County Wild Bill LakeCarbon County Cooney ReservoirCarbon County Big Butte LakeCarbon 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.

Looking for a different Triangle Lake? Also on record: Triangle Lake (Elmore County, Idaho) · Triangle Lake (Idaho County, Idaho) · Triangle Lake (Alger County, Michigan)

Agency records

Full stocking history

DateSpeciesFishSizeHatchery
August 5, 2025 Yellowstone Cutthroat Trout 790 2.34 in avg Yellowstone River Trout Hatchery
July 29, 2019 Yellowstone Cutthroat Trout 470 2.72 in avg Yellowstone River Trout Hatchery
July 30, 2018 Yellowstone Cutthroat Trout 630 2.34 in avg Yellowstone River Trout Hatchery
July 24, 2017 Yellowstone Cutthroat Trout 790 2.3000000000000003 in avg Yellowstone River Trout Hatchery
August 2, 2011 Yellowstone Cutthroat Trout 630 2.2 in avg Yellowstone River Trout Hatchery
July 20, 2010 Yellowstone Cutthroat Trout 630 2.15 in avg Yellowstone River Trout Hatchery
July 28, 2009 Yellowstone Cutthroat Trout 790 2 in avg Yellowstone River Trout Hatchery
July 28, 2009 Yellowstone Cutthroat Trout 790 2 in avg Yellowstone River Trout Hatchery
August 6, 2003 Yellowstone Cutthroat Trout 630 2.15 in avg Yellowstone River Trout Hatchery
August 13, 2002 Yellowstone Cutthroat Trout 630 2.5 in avg Yellowstone River Trout Hatchery
August 7, 2001 Yellowstone Cutthroat Trout 790 2 in avg Yellowstone River Trout Hatchery
August 4, 1995 Yellowstone Cutthroat Trout 630 2 in avg Yellowstone River Trout Hatchery
August 8, 1994 Yellowstone Cutthroat Trout 630 2.4 in avg Yellowstone River Trout Hatchery
August 9, 1993 Yellowstone Cutthroat Trout 800 2.2 in avg Yellowstone River Trout Hatchery
August 13, 1987 Yellowstone Cutthroat Trout 1,000 1.9000000000000001 in avg Yellowstone River Trout Hatchery
July 22, 1985 Yellowstone Cutthroat Trout 817 2 in avg Big Springs Trout Hatchery
July 22, 1985 Yellowstone Cutthroat Trout 654 2 in avg Big Springs Trout Hatchery
August 17, 1979 Yellowstone Cutthroat Trout 1,026 2 in avg Yellowstone River Trout Hatchery
August 17, 1977 Yellowstone Cutthroat Trout 630 2 in avg Yellowstone River Trout Hatchery
August 17, 1977 Yellowstone Cutthroat Trout 790 2 in avg Yellowstone River Trout Hatchery
August 5, 1971 Yellowstone Cutthroat Trout 660 3 in avg Yellowstone River Trout Hatchery
August 1, 1969 Yellowstone Cutthroat Trout 2,070 3 in avg Yellowstone River Trout Hatchery

Records shown exactly as published by Montana Fish, Wildlife & Parks. An event missing here does not mean the water was not stocked - some plants go unreported or are published elsewhere.

Data source: Montana Fish, Wildlife & Parks. Last updated: .

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