StockedWaters

Grasshopper Reservoir Fish Stocking

Montana · 19472025 on record

Source: Montana fish & wildlife agency· updated 2025-09-23

According to Montana fish & wildlife agency, Grasshopper Reservoir was last stocked September 23, 2025 with Rainbow Trout. Grasshopper Reservoir has 87 stocking records on file, spanning 1947–2025, with about 362,893 fish stocked over that period.

September 23, 2025
Last stocked
362,893
Fish stocked
3
Species
87
Stocking records

When Grasshopper Reservoir is stocked

Grasshopper Reservoir is typically stocked in spring, most often in April — 25 stocking events in that peak month.

How Grasshopper Reservoir's stockings spread across the calendar year.

Nearby stocked waters

Other stocked waters near Grasshopper Reservoir, freshest activity first.

Stocking history

Most recent stockings first. Dates shown at the precision the agency reported.

DateSpeciesNumberSizeSource
September 23, 2025Rainbow Trout2,5977.3"Montana fish & wildlife agency
April 30, 2025Rainbow Trout4,0002.87"Montana fish & wildlife agency
May 28, 2024Rainbow Trout4,0003.23"Montana fish & wildlife agency
September 13, 2023Rainbow Trout3,0565.69"Montana fish & wildlife agency
May 30, 2023Rainbow Trout4,2632.74"Montana fish & wildlife agency
May 25, 2022Rainbow Trout4,0003.25"Montana fish & wildlife agency
October 1, 2021Rainbow Trout3,0607.19"Montana fish & wildlife agency
June 1, 2021Rainbow Trout4,0003.1"Montana fish & wildlife agency
Show 42 more stocking records
DateSpeciesNumberSizeSource
May 6, 2020Rainbow Trout4,2613.08"Montana fish & wildlife agency
September 23, 2019Rainbow Trout1,0177.17"Montana fish & wildlife agency
July 8, 2019Tiger Trout5004.93"Montana fish & wildlife agency
May 13, 2019Rainbow Trout2,5002.65"Montana fish & wildlife agency
May 3, 2018Rainbow Trout2,5002.47"Montana fish & wildlife agency
October 11, 2017Rainbow Trout3,2646.97"Montana fish & wildlife agency
April 13, 2017Rainbow Trout2,5002.02"Montana fish & wildlife agency
April 7, 2016Rainbow Trout2,5002.09"Montana fish & wildlife agency
September 15, 2015Rainbow Trout3,1016.73"Montana fish & wildlife agency
April 16, 2015Rainbow Trout2,5002.01"Montana fish & wildlife agency
May 14, 2014Rainbow Trout2,5002.45"Montana fish & wildlife agency
September 13, 2013Rainbow Trout3,0305.99"Montana fish & wildlife agency
June 26, 2013Tiger Trout1503"Montana fish & wildlife agency
June 19, 2013Rainbow Trout2,5003.27"Montana fish & wildlife agency
May 8, 2012Rainbow Trout2,5002.72"Montana fish & wildlife agency
October 4, 2011Rainbow Trout2,9984.13"Montana fish & wildlife agency
May 18, 2011Rainbow Trout2,5003.09"Montana fish & wildlife agency
July 8, 2010Rainbow Trout15.9"Montana fish & wildlife agency
June 15, 2010Rainbow Trout1,9234.45"Montana fish & wildlife agency
September 25, 2009Rainbow Trout2,9964"Montana fish & wildlife agency
April 21, 2009Rainbow Trout2,5004"Montana fish & wildlife agency
May 1, 2008Rainbow Trout2,5003.2"Montana fish & wildlife agency
September 14, 2007Rainbow Trout2944.54"Montana fish & wildlife agency
September 14, 2007Rainbow Trout5,7193.57"Montana fish & wildlife agency
April 24, 2007Rainbow Trout2,5003.4"Montana fish & wildlife agency
May 4, 2006Rainbow Trout3,0003.22"Montana fish & wildlife agency
April 20, 2006Rainbow Trout2,5003.4"Montana fish & wildlife agency
September 15, 2005Rainbow Trout3,2555.12"Montana fish & wildlife agency
April 13, 2005Rainbow Trout2,5003.57"Montana fish & wildlife agency
April 14, 2004Rainbow Trout2,0003.5"Montana fish & wildlife agency
September 24, 2003Rainbow Trout1,6103.79"Montana fish & wildlife agency
September 24, 2003Rainbow Trout1,5004.37"Montana fish & wildlife agency
May 22, 2003Rainbow Trout2,5004.3"Montana fish & wildlife agency
April 30, 2002Rainbow Trout1,0004.2"Montana fish & wildlife agency
May 1, 2001Rainbow Trout2,3753.7"Montana fish & wildlife agency
April 18, 2000Rainbow Trout2,0003.5"Montana fish & wildlife agency
April 20, 1999Rainbow Trout2,5003.3"Montana fish & wildlife agency
April 21, 1998Rainbow Trout4,5003.4"Montana fish & wildlife agency
April 14, 1998Rainbow Trout10,0762.3"Montana fish & wildlife agency
September 15, 1997Rainbow Trout4,4034.7"Montana fish & wildlife agency
April 17, 1997Rainbow Trout3,0003.1"Montana fish & wildlife agency
April 25, 1996Rainbow Trout3,9156.5"Montana fish & wildlife agency

Showing 50 of 87 stocking records.

Frequently asked

When was Grasshopper Reservoir last stocked?

According to Montana fish & wildlife agency, Grasshopper Reservoir was last stocked September 23, 2025 with Rainbow Trout.

What fish species are stocked in Grasshopper Reservoir?

Grasshopper Reservoir is stocked with Rainbow Trout, Tiger Trout, and Largemouth Bass.

What time of year is Grasshopper Reservoir stocked?

Grasshopper Reservoir is typically stocked in spring, most often in April.

How often is Grasshopper Reservoir stocked?

Grasshopper Reservoir is stocked intermittently — 87 recorded stockings between 1947 and 2025.

How many fish have been stocked in Grasshopper Reservoir?

About 362,893 fish have been stocked in Grasshopper Reservoir across 87 recorded events since 1947, per Montana fish & wildlife agency.

What size are the fish stocked in Grasshopper Reservoir?

Fish stocked in Grasshopper Reservoir average about 4.0 inches, based on the sizes the agency reported.

How this is calculated: compiled automatically from Montana fish & wildlife agency open data — normalized, date-validated, and shown only at the precision the agency reported. Sources & methodology →

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