What species are stocked in Triangle Lake?

On record: Yellowstone Cutthroat Trout. Source: Montana Fish, Wildlife & Parks.

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Montana stocking report

Triangle Lake

22 records Last reported: August 5, 2025

Last reported stocking

The latest reported stocking at Triangle Lake was on August 5, 2025: 790 Yellowstone Cutthroat Trout (2.34 in avg).

Record last checked: 2026-07-24. This is not a stocking date.

Browse stocking history

Source: Montana Fish, Wildlife & Parks.

A schedule is a plan, not confirmation that fish were released. Stocking records do not guarantee fish are still available.

No current or upcoming schedule is in this archive. Check the official report before choosing a trip date.

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

Location map

Triangle Lake location context

Agency coordinates · access unverified

Triangle LakeAgency coordinates Greenough LakeAgency coordinates Wild Bill LakeAgency coordinates Cooney ReservoirAgency coordinates Big Butte LakeAgency coordinates

Pins appear only when the record includes coordinates; they are not verified access points. Shaded counties show area context only. Waters without coordinates stay in the list without a pin; confirm access and directions with the official agency source.

Before you go

Plan a trip to Triangle Lake

Check the latest report

Confirm dates and any changes in the official stocking report. Historical schedules are kept below even after their planned dates pass.

Check access and fishing rules

Use Montana's official fishing information to find current guidance. Confirm the exact water, public access, closures, and applicable fishing rules before leaving.

Choose the right location

The map gives location context. A shaded county is area context, not directions to a fishing spot or evidence of public access.

Get stocking alerts for this water

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

Stocking history

22 records from August 1, 1969 to August 5, 2025. Open a year to browse its records; scroll tables sideways for all columns. Scheduled means planned, even when the date has passed. Blank fields mean the source did not publish that detail.

2025 1 record

2025 stocking records and official sources
Date / status	Species	Fish	Size	Hatchery	Source
August 5, 2025 reported	Yellowstone Cutthroat Trout	790	2.34 in avg	Yellowstone River Trout Hatchery	Montana Fish, Wildlife & Parks

2019 1 record

2019 stocking records and official sources
Date / status	Species	Fish	Size	Hatchery	Source
July 29, 2019 reported	Yellowstone Cutthroat Trout	470	2.72 in avg	Yellowstone River Trout Hatchery	Montana Fish, Wildlife & Parks

2018 1 record

2018 stocking records and official sources
Date / status	Species	Fish	Size	Hatchery	Source
July 30, 2018 reported	Yellowstone Cutthroat Trout	630	2.34 in avg	Yellowstone River Trout Hatchery	Montana Fish, Wildlife & Parks

2017 1 record

2017 stocking records and official sources
Date / status	Species	Fish	Size	Hatchery	Source
July 24, 2017 reported	Yellowstone Cutthroat Trout	790	2.3000000000000003 in avg	Yellowstone River Trout Hatchery	Montana Fish, Wildlife & Parks

2011 1 record

2011 stocking records and official sources
Date / status	Species	Fish	Size	Hatchery	Source
August 2, 2011 reported	Yellowstone Cutthroat Trout	630	2.2 in avg	Yellowstone River Trout Hatchery	Montana Fish, Wildlife & Parks

2010 1 record

2010 stocking records and official sources
Date / status	Species	Fish	Size	Hatchery	Source
July 20, 2010 reported	Yellowstone Cutthroat Trout	630	2.15 in avg	Yellowstone River Trout Hatchery	Montana Fish, Wildlife & Parks

2009 2 records

2009 stocking records and official sources
Date / status	Species	Fish	Size	Hatchery	Source
July 28, 2009 reported	Yellowstone Cutthroat Trout	790	2 in avg	Yellowstone River Trout Hatchery	Montana Fish, Wildlife & Parks
July 28, 2009 reported	Yellowstone Cutthroat Trout	790	2 in avg	Yellowstone River Trout Hatchery	Montana Fish, Wildlife & Parks

2003 1 record

2003 stocking records and official sources
Date / status	Species	Fish	Size	Hatchery	Source
August 6, 2003 reported	Yellowstone Cutthroat Trout	630	2.15 in avg	Yellowstone River Trout Hatchery	Montana Fish, Wildlife & Parks

2002 1 record

2002 stocking records and official sources
Date / status	Species	Fish	Size	Hatchery	Source
August 13, 2002 reported	Yellowstone Cutthroat Trout	630	2.5 in avg	Yellowstone River Trout Hatchery	Montana Fish, Wildlife & Parks

2001 1 record

2001 stocking records and official sources
Date / status	Species	Fish	Size	Hatchery	Source
August 7, 2001 reported	Yellowstone Cutthroat Trout	790	2 in avg	Yellowstone River Trout Hatchery	Montana Fish, Wildlife & Parks

1995 1 record

1995 stocking records and official sources
Date / status	Species	Fish	Size	Hatchery	Source
August 4, 1995 reported	Yellowstone Cutthroat Trout	630	2 in avg	Yellowstone River Trout Hatchery	Montana Fish, Wildlife & Parks

1994 1 record

1994 stocking records and official sources
Date / status	Species	Fish	Size	Hatchery	Source
August 8, 1994 reported	Yellowstone Cutthroat Trout	630	2.4 in avg	Yellowstone River Trout Hatchery	Montana Fish, Wildlife & Parks

1993 1 record

1993 stocking records and official sources
Date / status	Species	Fish	Size	Hatchery	Source
August 9, 1993 reported	Yellowstone Cutthroat Trout	800	2.2 in avg	Yellowstone River Trout Hatchery	Montana Fish, Wildlife & Parks

1987 1 record

1987 stocking records and official sources
Date / status	Species	Fish	Size	Hatchery	Source
August 13, 1987 reported	Yellowstone Cutthroat Trout	1,000	1.9000000000000001 in avg	Yellowstone River Trout Hatchery	Montana Fish, Wildlife & Parks

1985 2 records

1985 stocking records and official sources
Date / status	Species	Fish	Size	Hatchery	Source
July 22, 1985 reported	Yellowstone Cutthroat Trout	817	2 in avg	Big Springs Trout Hatchery	Montana Fish, Wildlife & Parks
July 22, 1985 reported	Yellowstone Cutthroat Trout	654	2 in avg	Big Springs Trout Hatchery	Montana Fish, Wildlife & Parks

1979 1 record

1979 stocking records and official sources
Date / status	Species	Fish	Size	Hatchery	Source
August 17, 1979 reported	Yellowstone Cutthroat Trout	1,026	2 in avg	Yellowstone River Trout Hatchery	Montana Fish, Wildlife & Parks

1977 2 records

1977 stocking records and official sources
Date / status	Species	Fish	Size	Hatchery	Source
August 17, 1977 reported	Yellowstone Cutthroat Trout	630	2 in avg	Yellowstone River Trout Hatchery	Montana Fish, Wildlife & Parks
August 17, 1977 reported	Yellowstone Cutthroat Trout	790	2 in avg	Yellowstone River Trout Hatchery	Montana Fish, Wildlife & Parks

1971 1 record

1971 stocking records and official sources
Date / status	Species	Fish	Size	Hatchery	Source
August 5, 1971 reported	Yellowstone Cutthroat Trout	660	3 in avg	Yellowstone River Trout Hatchery	Montana Fish, Wildlife & Parks

1969 1 record

1969 stocking records and official sources
Date / status	Species	Fish	Size	Hatchery	Source
August 1, 1969 reported	Yellowstone Cutthroat Trout	2,070	3 in avg	Yellowstone River Trout Hatchery	Montana Fish, Wildlife & Parks

Records retain the dates, quantities, and status supplied by the linked agencies. An event missing here does not mean the water was not stocked - some plants go unreported or are published elsewhere.

Grouped by county and sorted by latest record, not by driving distance. Confirm access for each water.

Data source: Montana Fish, Wildlife & Parks. A record for this water was last checked on 2026-07-24. This check date is not a stocking date.

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