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Montana stocking report

Grasshopper Reservoir

87 records Last stocked: September 23, 2025

The short answer

Grasshopper Reservoir was last stocked on September 23, 2025: 2,597 Rainbow Trout (7.3 in avg).

County
Blaine
Species on record
Rainbow Trout, Tiger Muskellunge, Largemouth Bass
Records
87 stocking events
Official source
Montana Fish, Wildlife & Parks report

Location map

Grasshopper 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 Grasshopper Reservoir, Blaine County Grasshopper Reservoir Petrie Pond, Blaine County Petrie Pond Salmo Reservoir, Blaine County Salmo Reservoir Faber Reservoir, Blaine County Faber Reservoir Reser Reservoir, Blaine County Reser Reservoir Cow Creek Reservoir, Blaine County Cow Creek Reservoir Anderson Reservoir, Blaine County Anderson Reservoir Ross Reservoir, Blaine County Ross Reservoir BR 045 Reservoir, Blaine County BR 045 Reservoir Blaine County
Grasshopper ReservoirBlaine County Petrie PondBlaine County Salmo ReservoirBlaine County Faber ReservoirBlaine County Reser ReservoirBlaine 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
September 23, 2025 Rainbow Trout 2,597 7.3 in avg Big Springs Trout Hatchery
April 30, 2025 Rainbow Trout 4,000 2.87 in avg Fort Peck Hatchery
May 28, 2024 Rainbow Trout 4,000 3.23 in avg Fort Peck Hatchery
September 13, 2023 Rainbow Trout 3,056 5.69 in avg Big Springs Trout Hatchery
May 30, 2023 Rainbow Trout 4,263 2.74 in avg Fort Peck Hatchery
May 25, 2022 Rainbow Trout 4,000 3.25 in avg Fort Peck Hatchery
October 1, 2021 Rainbow Trout 3,060 7.19 in avg Big Springs Trout Hatchery
June 1, 2021 Rainbow Trout 4,000 3.1 in avg Fort Peck Hatchery
May 6, 2020 Rainbow Trout 4,261 3.08 in avg Fort Peck Hatchery
September 23, 2019 Rainbow Trout 1,017 7.17 in avg Big Springs Trout Hatchery
July 8, 2019 Tiger Muskellunge 500 4.93 in avg Miles City Fish Hatchery
May 13, 2019 Rainbow Trout 2,500 2.65 in avg Fort Peck Hatchery
May 3, 2018 Rainbow Trout 2,500 2.47 in avg Fort Peck Hatchery
October 11, 2017 Rainbow Trout 3,264 6.97 in avg Big Springs Trout Hatchery
April 13, 2017 Rainbow Trout 2,500 2.02 in avg Fort Peck Hatchery
April 7, 2016 Rainbow Trout 2,500 2.09 in avg Fort Peck Hatchery
September 15, 2015 Rainbow Trout 3,101 6.73 in avg Big Springs Trout Hatchery
April 16, 2015 Rainbow Trout 2,500 2.0100000000000002 in avg Fort Peck Hatchery
May 14, 2014 Rainbow Trout 2,500 2.45 in avg Fort Peck Hatchery
September 13, 2013 Rainbow Trout 3,030 5.99 in avg Big Springs Trout Hatchery
June 26, 2013 Tiger Muskellunge 150 3 in avg Miles City Fish Hatchery
June 19, 2013 Rainbow Trout 2,500 3.27 in avg Fort Peck Hatchery
May 8, 2012 Rainbow Trout 2,500 2.72 in avg Fort Peck Hatchery
October 4, 2011 Rainbow Trout 2,998 4.13 in avg Big Springs Trout Hatchery
May 18, 2011 Rainbow Trout 2,500 3.09 in avg Fort Peck Hatchery
July 8, 2010 Rainbow Trout 1 5.9 in avg Fort Peck Hatchery
June 15, 2010 Rainbow Trout 1,923 4.45 in avg Fort Peck Hatchery
September 25, 2009 Rainbow Trout 2,996 4 in avg Big Springs Trout Hatchery
April 21, 2009 Rainbow Trout 2,500 4 in avg Giant Springs Trout Hatchery
May 1, 2008 Rainbow Trout 2,500 3.2 in avg Giant Springs Trout Hatchery
September 14, 2007 Rainbow Trout 5,719 3.5700000000000003 in avg Big Springs Trout Hatchery
September 14, 2007 Rainbow Trout 294 4.54 in avg Big Springs Trout Hatchery
April 24, 2007 Rainbow Trout 2,500 3.4 in avg Giant Springs Trout Hatchery
May 4, 2006 Rainbow Trout 3,000 3.22 in avg Big Springs Trout Hatchery
April 20, 2006 Rainbow Trout 2,500 3.4 in avg Giant Springs Trout Hatchery
September 15, 2005 Rainbow Trout 3,255 5.12 in avg Big Springs Trout Hatchery
April 13, 2005 Rainbow Trout 2,500 3.5700000000000003 in avg Giant Springs Trout Hatchery
April 14, 2004 Rainbow Trout 2,000 3.5 in avg Giant Springs Trout Hatchery
September 24, 2003 Rainbow Trout 1,500 4.37 in avg Big Springs Trout Hatchery
September 24, 2003 Rainbow Trout 1,610 3.79 in avg Big Springs Trout Hatchery
May 22, 2003 Rainbow Trout 2,500 4.3 in avg Giant Springs Trout Hatchery
April 30, 2002 Rainbow Trout 1,000 4.2 in avg Giant Springs Trout Hatchery
May 1, 2001 Rainbow Trout 2,375 3.7 in avg Giant Springs Trout Hatchery
April 18, 2000 Rainbow Trout 2,000 3.5 in avg Giant Springs Trout Hatchery
April 20, 1999 Rainbow Trout 2,500 3.3000000000000003 in avg Giant Springs Trout Hatchery
April 21, 1998 Rainbow Trout 4,500 3.4 in avg Giant Springs Trout Hatchery
April 14, 1998 Rainbow Trout 10,076 2.3000000000000003 in avg Bluewater Springs Trout Hatchery
September 15, 1997 Rainbow Trout 4,403 4.7 in avg Big Springs Trout Hatchery
April 17, 1997 Rainbow Trout 3,000 3.1 in avg Giant Springs Trout Hatchery
April 25, 1996 Rainbow Trout 3,915 6.5 in avg Giant Springs Trout Hatchery
April 17, 1996 Rainbow Trout 5,001 3.2 in avg Giant Springs Trout Hatchery
April 20, 1995 Rainbow Trout 2,500 3.3000000000000003 in avg Giant Springs Trout Hatchery
April 14, 1994 Rainbow Trout 5,000 3.1 in avg Giant Springs Trout Hatchery
September 3, 1993 Rainbow Trout 3,063 5.1000000000000005 in avg Big Springs Trout Hatchery
May 29, 1992 Rainbow Trout 2,500 6.7 in avg Giant Springs Trout Hatchery
April 9, 1992 Rainbow Trout 5,000 2.9 in avg Giant Springs Trout Hatchery
April 18, 1990 Rainbow Trout 5,244 3.5 in avg Big Springs Trout Hatchery
September 26, 1989 Rainbow Trout 2,009 4.8 in avg Big Springs Trout Hatchery
June 14, 1988 Largemouth Bass 20,000 0.5 in avg Miles City Fish Hatchery
April 15, 1988 Rainbow Trout 5,002 3.7 in avg Big Springs Trout Hatchery
September 14, 1987 Rainbow Trout 4,984 5.1000000000000005 in avg Big Springs Trout Hatchery
June 11, 1987 Largemouth Bass 20,000 0.5 in avg Miles City Fish Hatchery
September 9, 1986 Rainbow Trout 6,538 5 in avg Big Springs Trout Hatchery
July 29, 1986 Largemouth Bass 1,800 2 in avg Miles City Fish Hatchery
June 28, 1985 Rainbow Trout 2,500 4 in avg Big Springs Trout Hatchery
April 18, 1985 Rainbow Trout 2,500 4 in avg Big Springs Trout Hatchery
May 9, 1984 Rainbow Trout 6,009 4 in avg Giant Springs Trout Hatchery
June 7, 1983 Rainbow Trout 6,021 4 in avg Giant Springs Trout Hatchery
July 23, 1982 Rainbow Trout 6,002 5 in avg Giant Springs Trout Hatchery
June 10, 1981 Rainbow Trout 6,000 5 in avg Giant Springs Trout Hatchery
May 22, 1980 Rainbow Trout 8,052 3 in avg Giant Springs Trout Hatchery
June 19, 1979 Rainbow Trout 8,323 5 in avg Big Springs Trout Hatchery
June 15, 1978 Rainbow Trout 7,105 4 in avg Giant Springs Trout Hatchery
May 31, 1977 Rainbow Trout 6,500 5 in avg Giant Springs Trout Hatchery
May 11, 1976 Rainbow Trout 6,160 6 in avg Giant Springs Trout Hatchery
June 10, 1975 Rainbow Trout 6,150 4 in avg Giant Springs Trout Hatchery
July 26, 1974 Rainbow Trout 6,240 8 in avg Giant Springs Trout Hatchery
June 13, 1972 Rainbow Trout 6,240 5 in avg Giant Springs Trout Hatchery
May 27, 1971 Rainbow Trout 6,500 5 in avg Giant Springs Trout Hatchery
June 3, 1970 Rainbow Trout 5,600 3 in avg Giant Springs Trout Hatchery
May 27, 1969 Rainbow Trout 5,980 3 in avg Giant Springs Trout Hatchery
April 16, 1968 Rainbow Trout 5,950 3 in avg Giant Springs Trout Hatchery
May 24, 1967 Rainbow Trout 6,000 4 in avg Giant Springs Trout Hatchery
April 12, 1966 Rainbow Trout 6,000 4 in avg Giant Springs Trout Hatchery
June 7, 1965 Rainbow Trout 6,006 4 in avg Giant Springs Trout Hatchery
September 8, 1964 Rainbow Trout 6,550 5 in avg Big Springs Trout Hatchery
September 10, 1947 Rainbow Trout 1,000 2 in avg Giant 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: .

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