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Idaho stocking report

Grasmere Reservoir

66 records Last reported: October 2, 2025

Last reported stocking

The latest reported stocking at Grasmere Reservoir was on October 2, 2025: 4,480 Triploid Rainbow Trout (Catchable (6+ inches)).

Record last checked: . This is not a stocking date.

Browse stocking history

Source: Idaho Department of Fish and Game.

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
Owyhee
Species on record
Triploid Rainbow Trout, Cutthroat Trout - Lahontan, Rainbow Trout
Records
66 records
Official source
Idaho Department of Fish and Game report

Location map

Grasmere Reservoir location context

Approximate · county context
Ada County Adams County Bannock County Bear Lake County Benewah County Bingham County Blaine County Boise County Bonner County Bonneville County Boundary County Butte County Camas County Canyon County Caribou County Cassia County Clark County Clearwater County Custer County Elmore County Franklin County Fremont County Gem County Gooding County Idaho County Jefferson County Jerome County Kootenai County Latah County Lemhi County Lewis County Lincoln County Madison County Minidoka County Nez Perce County Oneida County Owyhee County Payette County Power County Shoshone County Teton County Twin Falls County Valley County Washington County ID Owyhee County
Grasmere ReservoirOwyhee County only Marsing PondOwyhee County only Owyhee RiverOwyhee County only Crane Falls LakeOwyhee County only Bybee ReservoirOwyhee County only

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 Grasmere 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 Idaho'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.

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Agency records

Stocking history

66 records from May 24, 1968 to October 2, 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 4 records
2025 stocking records and official sources
Date / statusSpeciesFishSizeSource
October 2, 2025 reported Triploid Rainbow Trout4,480Catchable (6+ inches) Idaho Department of Fish and Game
October 2, 2025 reported Triploid Rainbow Trout9,557Catchable (6+ inches) Idaho Department of Fish and Game
October 1, 2025 reported Triploid Rainbow Trout10,350Catchable (6+ inches) Idaho Department of Fish and Game
October 1, 2025 reported Triploid Rainbow Trout6,183Catchable (6+ inches) Idaho Department of Fish and Game
2024 1 record
2024 stocking records and official sources
Date / statusSpeciesFishSizeSource
October 4, 2024 reported Cutthroat Trout - Lahontan19,936Fingerling (3-6 inches) Idaho Department of Fish and Game
2023 1 record
2023 stocking records and official sources
Date / statusSpeciesFishSizeSource
October 6, 2023 reported Cutthroat Trout - Lahontan20,040Fingerling (3-6 inches) Idaho Department of Fish and Game
2022 1 record
2022 stocking records and official sources
Date / statusSpeciesFishSizeSource
September 26, 2022 reported Cutthroat Trout - Lahontan20,036Fingerling (3-6 inches) Idaho Department of Fish and Game
2021 1 record
2021 stocking records and official sources
Date / statusSpeciesFishSizeSource
September 28, 2021 reported Cutthroat Trout - Lahontan26,112Fingerling (3-6 inches) Idaho Department of Fish and Game
2020 2 records
2020 stocking records and official sources
Date / statusSpeciesFishSizeSource
September 29, 2020 reported Cutthroat Trout - Lahontan12,110Fingerling (3-6 inches) Idaho Department of Fish and Game
September 29, 2020 reported Cutthroat Trout - Lahontan16,130Fingerling (3-6 inches) Idaho Department of Fish and Game
2019 1 record
2019 stocking records and official sources
Date / statusSpeciesFishSizeSource
September 11, 2019 reported Cutthroat Trout - Lahontan30,984Fry (0-3 inches) Idaho Department of Fish and Game
2018 2 records
2018 stocking records and official sources
Date / statusSpeciesFishSizeSource
September 25, 2018 reported Cutthroat Trout - Lahontan10,596Fingerling (3-6 inches) Idaho Department of Fish and Game
September 25, 2018 reported Cutthroat Trout - Lahontan15,138Fingerling (3-6 inches) Idaho Department of Fish and Game
2017 2 records
2017 stocking records and official sources
Date / statusSpeciesFishSizeSource
September 21, 2017 reported Cutthroat Trout - Lahontan10,183Fingerling (3-6 inches) Idaho Department of Fish and Game
September 21, 2017 reported Cutthroat Trout - Lahontan13,093Fingerling (3-6 inches) Idaho Department of Fish and Game
2016 1 record
2016 stocking records and official sources
Date / statusSpeciesFishSizeSource
September 29, 2016 reported Triploid Rainbow Trout1,036Catchable (6+ inches) Idaho Department of Fish and Game
2013 1 record
2013 stocking records and official sources
Date / statusSpeciesFishSizeSource
September 23, 2013 reported Cutthroat Trout - Lahontan29,827Fingerling (3-6 inches) Idaho Department of Fish and Game
2012 1 record
2012 stocking records and official sources
Date / statusSpeciesFishSizeSource
September 19, 2012 reported Cutthroat Trout - Lahontan33,880Fingerling (3-6 inches) Idaho Department of Fish and Game
2010 1 record
2010 stocking records and official sources
Date / statusSpeciesFishSizeSource
September 22, 2010 reported Cutthroat Trout - Lahontan24,898Fingerling (3-6 inches) Idaho Department of Fish and Game
2009 1 record
2009 stocking records and official sources
Date / statusSpeciesFishSizeSource
September 8, 2009 reported Cutthroat Trout - Lahontan20,280Fry (0-3 inches) Idaho Department of Fish and Game
2008 1 record
2008 stocking records and official sources
Date / statusSpeciesFishSizeSource
June 25, 2008 reported Cutthroat Trout - Lahontan49,236Fry (0-3 inches) Idaho Department of Fish and Game
2007 1 record
2007 stocking records and official sources
Date / statusSpeciesFishSizeSource
June 28, 2007 reported Cutthroat Trout - Lahontan49,918Fry (0-3 inches) Idaho Department of Fish and Game
2006 1 record
2006 stocking records and official sources
Date / statusSpeciesFishSizeSource
June 13, 2006 reported Cutthroat Trout - Lahontan20,868Fry (0-3 inches) Idaho Department of Fish and Game
2005 1 record
2005 stocking records and official sources
Date / statusSpeciesFishSizeSource
June 16, 2005 reported Cutthroat Trout - Lahontan20,944Fry (0-3 inches) Idaho Department of Fish and Game
2004 1 record
2004 stocking records and official sources
Date / statusSpeciesFishSizeSource
June 16, 2004 reported Cutthroat Trout - Lahontan28,000Fry (0-3 inches) Idaho Department of Fish and Game
2003 1 record
2003 stocking records and official sources
Date / statusSpeciesFishSizeSource
June 24, 2003 reported Cutthroat Trout - Lahontan24,840Fry (0-3 inches) Idaho Department of Fish and Game
2002 1 record
2002 stocking records and official sources
Date / statusSpeciesFishSizeSource
June 25, 2002 reported Cutthroat Trout - Lahontan24,600Fry (0-3 inches) Idaho Department of Fish and Game
2001 1 record
2001 stocking records and official sources
Date / statusSpeciesFishSizeSource
June 21, 2001 reported Cutthroat Trout - Lahontan24,641Fry (0-3 inches) Idaho Department of Fish and Game
2000 1 record
2000 stocking records and official sources
Date / statusSpeciesFishSizeSource
June 13, 2000 reported Cutthroat Trout - Lahontan25,185Fry (0-3 inches) Idaho Department of Fish and Game
1998 1 record
1998 stocking records and official sources
Date / statusSpeciesFishSizeSource
June 24, 1998 reported Cutthroat Trout - Lahontan24,900Fry (0-3 inches) Idaho Department of Fish and Game
1997 1 record
1997 stocking records and official sources
Date / statusSpeciesFishSizeSource
June 19, 1997 reported Cutthroat Trout - Lahontan15,460Fry (0-3 inches) Idaho Department of Fish and Game
1996 1 record
1996 stocking records and official sources
Date / statusSpeciesFishSizeSource
June 18, 1996 reported Cutthroat Trout - Lahontan7,490Fry (0-3 inches) Idaho Department of Fish and Game
1995 1 record
1995 stocking records and official sources
Date / statusSpeciesFishSizeSource
June 27, 1995 reported Cutthroat Trout - Lahontan7,475Fry (0-3 inches) Idaho Department of Fish and Game
1994 1 record
1994 stocking records and official sources
Date / statusSpeciesFishSizeSource
June 8, 1994 reported Cutthroat Trout - Lahontan6,000Fry (0-3 inches) Idaho Department of Fish and Game
1993 1 record
1993 stocking records and official sources
Date / statusSpeciesFishSizeSource
June 29, 1993 reported Cutthroat Trout - Lahontan13,075Fry (0-3 inches) Idaho Department of Fish and Game
1992 1 record
1992 stocking records and official sources
Date / statusSpeciesFishSizeSource
October 27, 1992 reported Cutthroat Trout - Lahontan2,700Fingerling (3-6 inches) Idaho Department of Fish and Game
1991 1 record
1991 stocking records and official sources
Date / statusSpeciesFishSizeSource
November 19, 1991 reported Cutthroat Trout - Lahontan3,120Fingerling (3-6 inches) Idaho Department of Fish and Game
1988 1 record
1988 stocking records and official sources
Date / statusSpeciesFishSizeSource
September 10, 1988 reported Cutthroat Trout - Lahontan10,250Fingerling (3-6 inches) Idaho Department of Fish and Game
1986 1 record
1986 stocking records and official sources
Date / statusSpeciesFishSizeSource
April 17, 1986 reported Rainbow Trout6,080Catchable (6+ inches) Idaho Department of Fish and Game
1985 1 record
1985 stocking records and official sources
Date / statusSpeciesFishSizeSource
May 21, 1985 reported Rainbow Trout6,080Catchable (6+ inches) Idaho Department of Fish and Game
1983 1 record
1983 stocking records and official sources
Date / statusSpeciesFishSizeSource
May 26, 1983 reported Rainbow Trout6,120Catchable (6+ inches) Idaho Department of Fish and Game
1982 2 records
1982 stocking records and official sources
Date / statusSpeciesFishSizeSource
May 28, 1982 reported Rainbow Trout2,660Catchable (6+ inches) Idaho Department of Fish and Game
May 28, 1982 reported Rainbow Trout5,850Catchable (6+ inches) Idaho Department of Fish and Game
1981 1 record
1981 stocking records and official sources
Date / statusSpeciesFishSizeSource
March 25, 1981 reported Rainbow Trout2,700Catchable (6+ inches) Idaho Department of Fish and Game
1980 1 record
1980 stocking records and official sources
Date / statusSpeciesFishSizeSource
April 30, 1980 reported Rainbow Trout7,440Catchable (6+ inches) Idaho Department of Fish and Game
1979 2 records
1979 stocking records and official sources
Date / statusSpeciesFishSizeSource
June 29, 1979 reported Rainbow Trout1,410Catchable (6+ inches) Idaho Department of Fish and Game
May 3, 1979 reported Rainbow Trout5,760Catchable (6+ inches) Idaho Department of Fish and Game
1978 1 record
1978 stocking records and official sources
Date / statusSpeciesFishSizeSource
May 19, 1978 reported Rainbow Trout7,200Catchable (6+ inches) Idaho Department of Fish and Game
1976 2 records
1976 stocking records and official sources
Date / statusSpeciesFishSizeSource
June 1, 1976 reported Rainbow Trout6,300Catchable (6+ inches) Idaho Department of Fish and Game
May 21, 1976 reported Rainbow Trout5,040Catchable (6+ inches) Idaho Department of Fish and Game
1975 2 records
1975 stocking records and official sources
Date / statusSpeciesFishSizeSource
June 25, 1975 reported Rainbow Trout3,960Catchable (6+ inches) Idaho Department of Fish and Game
May 28, 1975 reported Rainbow Trout5,520Catchable (6+ inches) Idaho Department of Fish and Game
1974 1 record
1974 stocking records and official sources
Date / statusSpeciesFishSizeSource
May 22, 1974 reported Rainbow Trout6,510Catchable (6+ inches) Idaho Department of Fish and Game
1973 2 records
1973 stocking records and official sources
Date / statusSpeciesFishSizeSource
April 6, 1973 reported Rainbow Trout6,090Catchable (6+ inches) Idaho Department of Fish and Game
March 19, 1973 reported Rainbow Trout4,320Catchable (6+ inches) Idaho Department of Fish and Game
1972 2 records
1972 stocking records and official sources
Date / statusSpeciesFishSizeSource
March 16, 1972 reported Rainbow Trout3,360Adults Idaho Department of Fish and Game
March 15, 1972 reported Rainbow Trout3,360Adults Idaho Department of Fish and Game
1971 3 records
1971 stocking records and official sources
Date / statusSpeciesFishSizeSource
May 12, 1971 reported Rainbow Trout7,920Catchable (6+ inches) Idaho Department of Fish and Game
April 29, 1971 reported Rainbow Trout7,200Catchable (6+ inches) Idaho Department of Fish and Game
April 14, 1971 reported Rainbow Trout3,600Catchable (6+ inches) Idaho Department of Fish and Game
1970 2 records
1970 stocking records and official sources
Date / statusSpeciesFishSizeSource
July 8, 1970 reported Rainbow Trout14,310Fry (0-3 inches) Idaho Department of Fish and Game
June 11, 1970 reported Rainbow Trout14,700Catchable (6+ inches) Idaho Department of Fish and Game
1969 3 records
1969 stocking records and official sources
Date / statusSpeciesFishSizeSource
May 16, 1969 reported Rainbow Trout23,340Fry (0-3 inches) Idaho Department of Fish and Game
May 14, 1969 reported Rainbow Trout5,250Catchable (6+ inches) Idaho Department of Fish and Game
May 5, 1969 reported Rainbow Trout5,460Catchable (6+ inches) Idaho Department of Fish and Game
1968 1 record
1968 stocking records and official sources
Date / statusSpeciesFishSizeSource
May 24, 1968 reported Rainbow Trout4,080Catchable (6+ inches) Idaho Department of Fish and Game

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: Idaho Department of Fish and Game. A record for this water was last checked on . This check date is not a stocking date.

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