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Montana stocking report

Bonanza Reservoir

66 records Last reported: May 27, 2026

Last reported stocking

The latest reported stocking at Bonanza Reservoir was on May 27, 2026: 507 Rainbow Trout (4.55 in avg).

Record last checked: . 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
Meagher
Species on record
Rainbow Trout
Records
66 records
Official source
Montana Fish, Wildlife & Parks report

Location map

Bonanza Reservoir location context

Agency coordinates · access unverified
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 Bonanza Reservoir, Meagher County Bonanza Reservoir Hundred Dollar Bill Pond, Meagher County Hundred Dollar Bill Pond Gipsy Lake, Meagher County Gipsy Lake Bair Reservoir, Meagher County Bair Reservoir Lake Sutherlin, Meagher County Lake Sutherlin Cook Reservoir 2, Meagher County Cook Reservoir 2 Newlan Reservoir, Meagher County Newlan Reservoir Castle Lake, Meagher County Castle Lake Edith Lake, Meagher County Edith Lake Meagher County
Bonanza ReservoirAgency coordinates Hundred Dollar Bill PondAgency coordinates Gipsy LakeAgency coordinates Bair ReservoirAgency coordinates Lake SutherlinAgency 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 Bonanza Reservoir

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

Agency records

Stocking history

66 records from July 7, 1958 to May 27, 2026. 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.

2026 1 record
2026 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
May 27, 2026 reported Rainbow Trout5074.55 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
2025 1 record
2025 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
June 4, 2025 reported Rainbow Trout4994.99 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
2024 1 record
2024 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
May 29, 2024 reported Rainbow Trout5034.51 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
2023 1 record
2023 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
June 1, 2023 reported Rainbow Trout5204.58 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
2022 1 record
2022 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
June 16, 2022 reported Rainbow Trout5074.69 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
2021 1 record
2021 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
June 11, 2021 reported Rainbow Trout4985.15 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
2020 1 record
2020 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
June 4, 2020 reported Rainbow Trout4984.2700000000000005 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
2019 1 record
2019 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
May 29, 2019 reported Rainbow Trout5074.5 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
2018 1 record
2018 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
June 6, 2018 reported Rainbow Trout5114.42 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
2017 1 record
2017 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
May 15, 2017 reported Rainbow Trout5263.56 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
2016 1 record
2016 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
June 8, 2016 reported Rainbow Trout5004.47 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
2015 1 record
2015 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
May 27, 2015 reported Rainbow Trout5004.2700000000000005 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
2014 1 record
2014 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
May 28, 2014 reported Rainbow Trout5144.12 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
2012 1 record
2012 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
June 7, 2012 reported Rainbow Trout5044.5200000000000005 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
2011 1 record
2011 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
June 16, 2011 reported Rainbow Trout4974.61 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
2010 1 record
2010 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
June 7, 2010 reported Rainbow Trout5004.24 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
2009 1 record
2009 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
June 3, 2009 reported Rainbow Trout5004 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
2008 1 record
2008 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
June 18, 2008 reported Rainbow Trout4964.93 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
2007 1 record
2007 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
June 11, 2007 reported Rainbow Trout4994.44 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
2006 1 record
2006 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
June 7, 2006 reported Rainbow Trout5484.04 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
2005 1 record
2005 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
May 25, 2005 reported Rainbow Trout5183.5100000000000002 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
2004 1 record
2004 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
June 7, 2004 reported Rainbow Trout4894.05 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
2003 1 record
2003 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
May 28, 2003 reported Rainbow Trout4973.69 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
2002 1 record
2002 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
June 5, 2002 reported Rainbow Trout5194.2 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
2001 1 record
2001 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
June 20, 2001 reported Rainbow Trout5154.3 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
2000 1 record
2000 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
June 8, 2000 reported Rainbow Trout5064.26 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
1999 1 record
1999 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
May 27, 1999 reported Rainbow Trout5294 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
1998 1 record
1998 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
June 3, 1998 reported Rainbow Trout5863.7 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
1997 1 record
1997 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
June 16, 1997 reported Rainbow Trout5494.2 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
1996 1 record
1996 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
June 12, 1996 reported Rainbow Trout4984.1 in avg Giant Springs Trout Hatchery Montana Fish, Wildlife & Parks
1995 1 record
1995 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
June 2, 1995 reported Rainbow Trout5144.1 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
1994 1 record
1994 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
June 15, 1994 reported Rainbow Trout5254.2 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
1993 1 record
1993 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
June 14, 1993 reported Rainbow Trout5103.9 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
1992 1 record
1992 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
May 26, 1992 reported Rainbow Trout5113.9 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
1991 1 record
1991 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
June 11, 1991 reported Rainbow Trout5004.5 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
1990 1 record
1990 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
June 15, 1990 reported Rainbow Trout5224.4 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
1989 1 record
1989 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
June 6, 1989 reported Rainbow Trout5175.5 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
1988 1 record
1988 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
June 6, 1988 reported Rainbow Trout5004.8 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
1987 1 record
1987 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
June 4, 1987 reported Rainbow Trout5384.6000000000000005 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
1986 1 record
1986 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
June 18, 1986 reported Rainbow Trout5075 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
1985 1 record
1985 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
May 14, 1985 reported Rainbow Trout5144 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
1984 1 record
1984 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
June 8, 1984 reported Rainbow Trout5034 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
1983 1 record
1983 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
June 2, 1983 reported Rainbow Trout5224 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
1981 1 record
1981 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
June 23, 1981 reported Rainbow Trout5545 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
1980 1 record
1980 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
June 24, 1980 reported Rainbow Trout5046 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
1979 1 record
1979 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
July 3, 1979 reported Rainbow Trout5015 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
1978 1 record
1978 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
July 26, 1978 reported Rainbow Trout5066 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
1977 1 record
1977 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
June 2, 1977 reported Rainbow Trout5105 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
1976 1 record
1976 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
May 18, 1976 reported Rainbow Trout5324 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
1974 1 record
1974 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
June 11, 1974 reported Rainbow Trout5045 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
1973 1 record
1973 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
May 11, 1973 reported Rainbow Trout6442 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
1972 1 record
1972 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
May 17, 1972 reported Rainbow Trout5584 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
1971 1 record
1971 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
May 5, 1971 reported Rainbow Trout1,0084 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
1970 1 record
1970 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
June 24, 1970 reported Rainbow Trout1,4705 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
1969 1 record
1969 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
May 5, 1969 reported Rainbow Trout2,1004 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
1968 1 record
1968 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
May 2, 1968 reported Rainbow Trout2,0004 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
1967 1 record
1967 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
July 26, 1967 reported Rainbow Trout1,9805 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
1965 1 record
1965 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
June 22, 1965 reported Rainbow Trout2,5505 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
1964 1 record
1964 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
June 16, 1964 reported Rainbow Trout2,6004 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
1962 1 record
1962 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
April 27, 1962 reported Rainbow Trout2,0403 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
1961 2 records
1961 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
July 11, 1961 reported Rainbow Trout3,200 Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
May 26, 1961 reported Rainbow Trout1,800 Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
1960 1 record
1960 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
May 10, 1960 reported Rainbow Trout3,1004 in avg Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
1959 2 records
1959 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
April 28, 1959 reported Rainbow Trout2,208 Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
April 4, 1959 reported Rainbow Trout2,475 Big Springs Trout Hatchery Montana Fish, Wildlife & Parks
1958 1 record
1958 stocking records and official sources
Date / statusSpeciesFishSizeHatcherySource
July 7, 1958 reported Rainbow Trout1,500 Big Springs 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 . This check date is not a stocking date.

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