StockerTroutFishing

Home / Montana / Meagher County / Bonanza Reservoir

Montana stocking report

Bonanza Reservoir

66 records Last stocked: May 27, 2026

The short answer

Bonanza Reservoir was last stocked on May 27, 2026: 507 Rainbow Trout (4.55 in avg).

County
Meagher
Species on record
Rainbow Trout
Records
66 stocking events
Official source
Montana Fish, Wildlife & Parks report

Location map

Bonanza Reservoir 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 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 ReservoirMeagher County Hundred Dollar Bill PondMeagher County Gipsy LakeMeagher County Bair ReservoirMeagher County Lake SutherlinMeagher 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

DateSpeciesFishSizeHatchery
May 27, 2026 Rainbow Trout 507 4.55 in avg Big Springs Trout Hatchery
June 4, 2025 Rainbow Trout 499 4.99 in avg Big Springs Trout Hatchery
May 29, 2024 Rainbow Trout 503 4.51 in avg Big Springs Trout Hatchery
June 1, 2023 Rainbow Trout 520 4.58 in avg Big Springs Trout Hatchery
June 16, 2022 Rainbow Trout 507 4.69 in avg Big Springs Trout Hatchery
June 11, 2021 Rainbow Trout 498 5.15 in avg Big Springs Trout Hatchery
June 4, 2020 Rainbow Trout 498 4.2700000000000005 in avg Big Springs Trout Hatchery
May 29, 2019 Rainbow Trout 507 4.5 in avg Big Springs Trout Hatchery
June 6, 2018 Rainbow Trout 511 4.42 in avg Big Springs Trout Hatchery
May 15, 2017 Rainbow Trout 526 3.56 in avg Big Springs Trout Hatchery
June 8, 2016 Rainbow Trout 500 4.47 in avg Big Springs Trout Hatchery
May 27, 2015 Rainbow Trout 500 4.2700000000000005 in avg Big Springs Trout Hatchery
May 28, 2014 Rainbow Trout 514 4.12 in avg Big Springs Trout Hatchery
June 7, 2012 Rainbow Trout 504 4.5200000000000005 in avg Big Springs Trout Hatchery
June 16, 2011 Rainbow Trout 497 4.61 in avg Big Springs Trout Hatchery
June 7, 2010 Rainbow Trout 500 4.24 in avg Big Springs Trout Hatchery
June 3, 2009 Rainbow Trout 500 4 in avg Big Springs Trout Hatchery
June 18, 2008 Rainbow Trout 496 4.93 in avg Big Springs Trout Hatchery
June 11, 2007 Rainbow Trout 499 4.44 in avg Big Springs Trout Hatchery
June 7, 2006 Rainbow Trout 548 4.04 in avg Big Springs Trout Hatchery
May 25, 2005 Rainbow Trout 518 3.5100000000000002 in avg Big Springs Trout Hatchery
June 7, 2004 Rainbow Trout 489 4.05 in avg Big Springs Trout Hatchery
May 28, 2003 Rainbow Trout 497 3.69 in avg Big Springs Trout Hatchery
June 5, 2002 Rainbow Trout 519 4.2 in avg Big Springs Trout Hatchery
June 20, 2001 Rainbow Trout 515 4.3 in avg Big Springs Trout Hatchery
June 8, 2000 Rainbow Trout 506 4.26 in avg Big Springs Trout Hatchery
May 27, 1999 Rainbow Trout 529 4 in avg Big Springs Trout Hatchery
June 3, 1998 Rainbow Trout 586 3.7 in avg Big Springs Trout Hatchery
June 16, 1997 Rainbow Trout 549 4.2 in avg Big Springs Trout Hatchery
June 12, 1996 Rainbow Trout 498 4.1 in avg Giant Springs Trout Hatchery
June 2, 1995 Rainbow Trout 514 4.1 in avg Big Springs Trout Hatchery
June 15, 1994 Rainbow Trout 525 4.2 in avg Big Springs Trout Hatchery
June 14, 1993 Rainbow Trout 510 3.9 in avg Big Springs Trout Hatchery
May 26, 1992 Rainbow Trout 511 3.9 in avg Big Springs Trout Hatchery
June 11, 1991 Rainbow Trout 500 4.5 in avg Big Springs Trout Hatchery
June 15, 1990 Rainbow Trout 522 4.4 in avg Big Springs Trout Hatchery
June 6, 1989 Rainbow Trout 517 5.5 in avg Big Springs Trout Hatchery
June 6, 1988 Rainbow Trout 500 4.8 in avg Big Springs Trout Hatchery
June 4, 1987 Rainbow Trout 538 4.6000000000000005 in avg Big Springs Trout Hatchery
June 18, 1986 Rainbow Trout 507 5 in avg Big Springs Trout Hatchery
May 14, 1985 Rainbow Trout 514 4 in avg Big Springs Trout Hatchery
June 8, 1984 Rainbow Trout 503 4 in avg Big Springs Trout Hatchery
June 2, 1983 Rainbow Trout 522 4 in avg Big Springs Trout Hatchery
June 23, 1981 Rainbow Trout 554 5 in avg Big Springs Trout Hatchery
June 24, 1980 Rainbow Trout 504 6 in avg Big Springs Trout Hatchery
July 3, 1979 Rainbow Trout 501 5 in avg Big Springs Trout Hatchery
July 26, 1978 Rainbow Trout 506 6 in avg Big Springs Trout Hatchery
June 2, 1977 Rainbow Trout 510 5 in avg Big Springs Trout Hatchery
May 18, 1976 Rainbow Trout 532 4 in avg Big Springs Trout Hatchery
June 11, 1974 Rainbow Trout 504 5 in avg Big Springs Trout Hatchery
May 11, 1973 Rainbow Trout 644 2 in avg Big Springs Trout Hatchery
May 17, 1972 Rainbow Trout 558 4 in avg Big Springs Trout Hatchery
May 5, 1971 Rainbow Trout 1,008 4 in avg Big Springs Trout Hatchery
June 24, 1970 Rainbow Trout 1,470 5 in avg Big Springs Trout Hatchery
May 5, 1969 Rainbow Trout 2,100 4 in avg Big Springs Trout Hatchery
May 2, 1968 Rainbow Trout 2,000 4 in avg Big Springs Trout Hatchery
July 26, 1967 Rainbow Trout 1,980 5 in avg Big Springs Trout Hatchery
June 22, 1965 Rainbow Trout 2,550 5 in avg Big Springs Trout Hatchery
June 16, 1964 Rainbow Trout 2,600 4 in avg Big Springs Trout Hatchery
April 27, 1962 Rainbow Trout 2,040 3 in avg Big Springs Trout Hatchery
July 11, 1961 Rainbow Trout 3,200 Big Springs Trout Hatchery
May 26, 1961 Rainbow Trout 1,800 Big Springs Trout Hatchery
May 10, 1960 Rainbow Trout 3,100 4 in avg Big Springs Trout Hatchery
April 28, 1959 Rainbow Trout 2,208 Big Springs Trout Hatchery
April 4, 1959 Rainbow Trout 2,475 Big Springs Trout Hatchery
July 7, 1958 Rainbow Trout 1,500 Big Springs 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: .

Alert me about Bonanza Reservoir