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Utah stocking report

MAMMOTH CR

144 records Last reported: June 23, 2026

Last reported stocking

The latest reported stocking at MAMMOTH CR was on June 23, 2026: 242 Rainbow Trout (10.54 in avg).

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

Browse stocking history

Source: Utah Division of Wildlife Resources.

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
GARFIELD
Species on record
Rainbow Trout, Tiger Trout, Brown Trout, Cutthroat Trout, Brook Trout
Records
144 records
Official source
Utah Division of Wildlife Resources report

Location map

MAMMOTH CR location context

Approximate · county context
Beaver County Box Elder County Cache County Carbon County Daggett County Davis County Duchesne County Emery County Garfield County Grand County Iron County Juab County Kane County Millard County Morgan County Piute County Rich County Salt Lake County San Juan County Sanpete County Sevier County Summit County Tooele County Uintah County Utah County Wasatch County Washington County Wayne County Weber County UT Garfield County
MAMMOTH CRGarfield County only BESS L BTNGarfield County only BIG L BTSGarfield County only BLUE L GTGarfield County only CHUCK L BTNGarfield 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 MAMMOTH CR

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 Utah'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

Looking for a different MAMMOTH CR? Also on record: MAMMOTH CR (IRON County, Utah)

Agency records

Stocking history

144 records from May 14, 2002 to June 23, 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 4 records
2026 stocking records and official sources
Date / statusSpeciesFishSizeSource
June 23, 2026 reported Rainbow Trout24210.54 in avg Utah Division of Wildlife Resources
May 20, 2026 reported Tiger Trout50010.19 in avg Utah Division of Wildlife Resources
May 18, 2026 reported Rainbow Trout26010.12 in avg Utah Division of Wildlife Resources
May 6, 2026 reported Brown Trout3,0463.28 in avg Utah Division of Wildlife Resources
2025 4 records
2025 stocking records and official sources
Date / statusSpeciesFishSizeSource
July 8, 2025 reported Rainbow Trout25110.51 in avg Utah Division of Wildlife Resources
June 4, 2025 reported Tiger Trout5119.21 in avg Utah Division of Wildlife Resources
May 28, 2025 reported Brown Trout3,7804.11 in avg Utah Division of Wildlife Resources
May 28, 2025 reported Rainbow Trout25210.21 in avg Utah Division of Wildlife Resources
2024 4 records
2024 stocking records and official sources
Date / statusSpeciesFishSizeSource
July 18, 2024 reported Rainbow Trout2609.83 in avg Utah Division of Wildlife Resources
June 12, 2024 reported Tiger Trout5018.99 in avg Utah Division of Wildlife Resources
May 14, 2024 reported Brown Trout3,1853.46 in avg Utah Division of Wildlife Resources
May 14, 2024 reported Rainbow Trout25810.47 in avg Utah Division of Wildlife Resources
2023 4 records
2023 stocking records and official sources
Date / statusSpeciesFishSizeSource
July 20, 2023 reported Rainbow Trout2409.9 in avg Utah Division of Wildlife Resources
June 27, 2023 reported Tiger Trout60510.75 in avg Utah Division of Wildlife Resources
April 19, 2023 reported Brown Trout3,2122.62 in avg Utah Division of Wildlife Resources
April 19, 2023 reported Rainbow Trout2649.9 in avg Utah Division of Wildlife Resources
2022 4 records
2022 stocking records and official sources
Date / statusSpeciesFishSizeSource
July 12, 2022 reported Rainbow Trout30610.29 in avg Utah Division of Wildlife Resources
June 15, 2022 reported Tiger Trout5128.74 in avg Utah Division of Wildlife Resources
June 8, 2022 reported Rainbow Trout25210.97 in avg Utah Division of Wildlife Resources
April 19, 2022 reported Brown Trout3,0902.95 in avg Utah Division of Wildlife Resources
2021 3 records
2021 stocking records and official sources
Date / statusSpeciesFishSizeSource
July 19, 2021 reported Rainbow Trout1,65010.24 in avg Utah Division of Wildlife Resources
May 11, 2021 reported Brown Trout3,6204.17 in avg Utah Division of Wildlife Resources
May 11, 2021 reported Rainbow Trout25210.5 in avg Utah Division of Wildlife Resources
2020 5 records
2020 stocking records and official sources
Date / statusSpeciesFishSizeSource
July 7, 2020 reported Rainbow Trout54210.06 in avg Utah Division of Wildlife Resources
July 7, 2020 reported Rainbow Trout78310.06 in avg Utah Division of Wildlife Resources
May 26, 2020 reported Rainbow Trout67110.54 in avg Utah Division of Wildlife Resources
May 26, 2020 reported Rainbow Trout72410.54 in avg Utah Division of Wildlife Resources
April 20, 2020 reported Brown Trout3,0743.25 in avg Utah Division of Wildlife Resources
2019 5 records
2019 stocking records and official sources
Date / statusSpeciesFishSizeSource
July 17, 2019 reported Rainbow Trout60010.13 in avg Utah Division of Wildlife Resources
July 17, 2019 reported Rainbow Trout74410.13 in avg Utah Division of Wildlife Resources
June 13, 2019 reported Rainbow Trout6009.99 in avg Utah Division of Wildlife Resources
June 13, 2019 reported Rainbow Trout7509.99 in avg Utah Division of Wildlife Resources
June 3, 2019 reported Brown Trout3,9513.91 in avg Utah Division of Wildlife Resources
2018 5 records
2018 stocking records and official sources
Date / statusSpeciesFishSizeSource
July 10, 2018 reported Rainbow Trout6078.68 in avg Utah Division of Wildlife Resources
July 10, 2018 reported Rainbow Trout7508.68 in avg Utah Division of Wildlife Resources
June 19, 2018 reported Brown Trout3,9844.3 in avg Utah Division of Wildlife Resources
May 31, 2018 reported Rainbow Trout59710.02 in avg Utah Division of Wildlife Resources
May 31, 2018 reported Rainbow Trout74910.02 in avg Utah Division of Wildlife Resources
2017 1 record
2017 stocking records and official sources
Date / statusSpeciesFishSizeSource
June 7, 2017 reported Brown Trout3,0643.62 in avg Utah Division of Wildlife Resources
2016 4 records
2016 stocking records and official sources
Date / statusSpeciesFishSizeSource
July 20, 2016 reported Rainbow Trout36410.44 in avg Utah Division of Wildlife Resources
July 20, 2016 reported Rainbow Trout66710.44 in avg Utah Division of Wildlife Resources
June 27, 2016 reported Rainbow Trout8339.88 in avg Utah Division of Wildlife Resources
June 9, 2016 reported Brown Trout2,9924.83 in avg Utah Division of Wildlife Resources
2015 9 records
2015 stocking records and official sources
Date / statusSpeciesFishSizeSource
August 10, 2015 reported Rainbow Trout3009.54 in avg Utah Division of Wildlife Resources
August 10, 2015 reported Rainbow Trout3609.54 in avg Utah Division of Wildlife Resources
July 7, 2015 reported Rainbow Trout2999.25 in avg Utah Division of Wildlife Resources
July 7, 2015 reported Rainbow Trout3759.25 in avg Utah Division of Wildlife Resources
June 23, 2015 reported Rainbow Trout3059.64 in avg Utah Division of Wildlife Resources
June 23, 2015 reported Rainbow Trout3779.64 in avg Utah Division of Wildlife Resources
May 11, 2015 reported Rainbow Trout3358.12 in avg Utah Division of Wildlife Resources
May 11, 2015 reported Rainbow Trout4078.12 in avg Utah Division of Wildlife Resources
April 29, 2015 reported Brown Trout3,0844.17 in avg Utah Division of Wildlife Resources
2014 9 records
2014 stocking records and official sources
Date / statusSpeciesFishSizeSource
August 11, 2014 reported Rainbow Trout3169.38 in avg Utah Division of Wildlife Resources
August 11, 2014 reported Rainbow Trout3959.38 in avg Utah Division of Wildlife Resources
July 7, 2014 reported Rainbow Trout3118.73 in avg Utah Division of Wildlife Resources
July 7, 2014 reported Rainbow Trout3768.73 in avg Utah Division of Wildlife Resources
June 11, 2014 reported Rainbow Trout2998.21 in avg Utah Division of Wildlife Resources
June 11, 2014 reported Rainbow Trout3738.21 in avg Utah Division of Wildlife Resources
May 13, 2014 reported Rainbow Trout3008.34 in avg Utah Division of Wildlife Resources
May 13, 2014 reported Rainbow Trout3758.34 in avg Utah Division of Wildlife Resources
April 24, 2014 reported Brown Trout3,0453.93 in avg Utah Division of Wildlife Resources
2013 12 records
2013 stocking records and official sources
Date / statusSpeciesFishSizeSource
September 18, 2013 reported Cutthroat Trout2,0942.31 in avg Utah Division of Wildlife Resources
August 6, 2013 reported Rainbow Trout2719.77 in avg Utah Division of Wildlife Resources
August 6, 2013 reported Rainbow Trout3429.77 in avg Utah Division of Wildlife Resources
July 29, 2013 reported Brook Trout1,3862.74 in avg Utah Division of Wildlife Resources
July 8, 2013 reported Rainbow Trout2859.31 in avg Utah Division of Wildlife Resources
July 8, 2013 reported Rainbow Trout3549.31 in avg Utah Division of Wildlife Resources
June 4, 2013 reported Rainbow Trout3018.26 in avg Utah Division of Wildlife Resources
June 4, 2013 reported Rainbow Trout3758.26 in avg Utah Division of Wildlife Resources
May 20, 2013 reported Brown Trout3,0733.22 in avg Utah Division of Wildlife Resources
May 14, 2013 reported Rainbow Trout2998.09 in avg Utah Division of Wildlife Resources
May 14, 2013 reported Rainbow Trout3748.09 in avg Utah Division of Wildlife Resources
April 30, 2013 reported Rainbow Trout58510.23 in avg Utah Division of Wildlife Resources
2012 9 records
2012 stocking records and official sources
Date / statusSpeciesFishSizeSource
September 13, 2012 reported Cutthroat Trout2,1702.36 in avg Utah Division of Wildlife Resources
August 8, 2012 reported Rainbow Trout30011.13 in avg Utah Division of Wildlife Resources
July 19, 2012 reported Brook Trout1,0222.8 in avg Utah Division of Wildlife Resources
July 19, 2012 reported Rainbow Trout62710.3 in avg Utah Division of Wildlife Resources
July 17, 2012 reported Rainbow Trout56010.46 in avg Utah Division of Wildlife Resources
July 16, 2012 reported Rainbow Trout50110.56 in avg Utah Division of Wildlife Resources
June 26, 2012 reported Rainbow Trout49910.99 in avg Utah Division of Wildlife Resources
June 12, 2012 reported Brown Trout3,3953.72 in avg Utah Division of Wildlife Resources
June 11, 2012 reported Rainbow Trout4849.81 in avg Utah Division of Wildlife Resources
2011 8 records
2011 stocking records and official sources
Date / statusSpeciesFishSizeSource
September 14, 2011 reported Cutthroat Trout1,9651.63 in avg Utah Division of Wildlife Resources
August 9, 2011 reported Rainbow Trout18210.98 in avg Utah Division of Wildlife Resources
July 19, 2011 reported Brown Trout3,1854.67 in avg Utah Division of Wildlife Resources
July 19, 2011 reported Rainbow Trout49910.79 in avg Utah Division of Wildlife Resources
July 19, 2011 reported Rainbow Trout57610.79 in avg Utah Division of Wildlife Resources
June 28, 2011 reported Brook Trout1,0012.71 in avg Utah Division of Wildlife Resources
June 28, 2011 reported Rainbow Trout50310.96 in avg Utah Division of Wildlife Resources
June 28, 2011 reported Rainbow Trout59510.96 in avg Utah Division of Wildlife Resources
2010 10 records
2010 stocking records and official sources
Date / statusSpeciesFishSizeSource
September 21, 2010 reported Cutthroat Trout2,0762.02 in avg Utah Division of Wildlife Resources
July 20, 2010 reported Rainbow Trout3669.27 in avg Utah Division of Wildlife Resources
July 14, 2010 reported Rainbow Trout5269.61 in avg Utah Division of Wildlife Resources
July 8, 2010 reported Rainbow Trout4919.67 in avg Utah Division of Wildlife Resources
July 6, 2010 reported Brown Trout3,1044.4 in avg Utah Division of Wildlife Resources
June 30, 2010 reported Rainbow Trout5549.45 in avg Utah Division of Wildlife Resources
June 28, 2010 reported Rainbow Trout2249 in avg Utah Division of Wildlife Resources
June 28, 2010 reported Rainbow Trout41010.08 in avg Utah Division of Wildlife Resources
June 8, 2010 reported Brook Trout1,0492.78 in avg Utah Division of Wildlife Resources
June 8, 2010 reported Rainbow Trout4739.53 in avg Utah Division of Wildlife Resources
2009 8 records
2009 stocking records and official sources
Date / statusSpeciesFishSizeSource
July 23, 2009 reported Rainbow Trout46810.92 in avg Utah Division of Wildlife Resources
July 7, 2009 reported Rainbow Trout48210.39 in avg Utah Division of Wildlife Resources
July 2, 2009 reported Rainbow Trout47010.48 in avg Utah Division of Wildlife Resources
June 22, 2009 reported Rainbow Trout48610.37 in avg Utah Division of Wildlife Resources
June 15, 2009 reported Brown Trout3,0174.21 in avg Utah Division of Wildlife Resources
June 9, 2009 reported Brook Trout1,0823.03 in avg Utah Division of Wildlife Resources
June 9, 2009 reported Rainbow Trout1,23810.63 in avg Utah Division of Wildlife Resources
June 9, 2009 reported Rainbow Trout50610.63 in avg Utah Division of Wildlife Resources
2008 9 records
2008 stocking records and official sources
Date / statusSpeciesFishSizeSource
October 21, 2008 reported Cutthroat Trout2,0912.85 in avg Utah Division of Wildlife Resources
July 23, 2008 reported Rainbow Trout4249.74 in avg Utah Division of Wildlife Resources
July 23, 2008 reported Rainbow Trout4649.74 in avg Utah Division of Wildlife Resources
July 3, 2008 reported Rainbow Trout5029.91 in avg Utah Division of Wildlife Resources
July 1, 2008 reported Rainbow Trout48210.05 in avg Utah Division of Wildlife Resources
June 23, 2008 reported Brook Trout1,0623.33 in avg Utah Division of Wildlife Resources
June 23, 2008 reported Brown Trout2,7205.03 in avg Utah Division of Wildlife Resources
June 11, 2008 reported Rainbow Trout4349.58 in avg Utah Division of Wildlife Resources
June 3, 2008 reported Rainbow Trout4949.89 in avg Utah Division of Wildlife Resources
2007 9 records
2007 stocking records and official sources
Date / statusSpeciesFishSizeSource
September 7, 2007 reported Rainbow Trout5469.19 in avg Utah Division of Wildlife Resources
July 20, 2007 reported Rainbow Trout3409.35 in avg Utah Division of Wildlife Resources
July 17, 2007 reported Rainbow Trout4679.68 in avg Utah Division of Wildlife Resources
July 3, 2007 reported Rainbow Trout3369.65 in avg Utah Division of Wildlife Resources
June 29, 2007 reported Brook Trout1,0174.45 in avg Utah Division of Wildlife Resources
June 26, 2007 reported Rainbow Trout4289.47 in avg Utah Division of Wildlife Resources
June 22, 2007 reported Rainbow Trout3029.29 in avg Utah Division of Wildlife Resources
June 12, 2007 reported Brown Trout2,9974.73 in avg Utah Division of Wildlife Resources
June 5, 2007 reported Rainbow Trout4169.29 in avg Utah Division of Wildlife Resources
2006 3 records
2006 stocking records and official sources
Date / statusSpeciesFishSizeSource
August 10, 2006 reported Brook Trout9983.22 in avg Utah Division of Wildlife Resources
June 22, 2006 reported Brown Trout3,0025.03 in avg Utah Division of Wildlife Resources
June 19, 2006 reported Rainbow Trout7959.81 in avg Utah Division of Wildlife Resources
2005 4 records
2005 stocking records and official sources
Date / statusSpeciesFishSizeSource
August 24, 2005 reported Rainbow Trout38310.91 in avg Utah Division of Wildlife Resources
August 10, 2005 reported Brook Trout1,0033.09 in avg Utah Division of Wildlife Resources
July 21, 2005 reported Brown Trout3,0045.39 in avg Utah Division of Wildlife Resources
July 21, 2005 reported Rainbow Trout3989.96 in avg Utah Division of Wildlife Resources
2004 4 records
2004 stocking records and official sources
Date / statusSpeciesFishSizeSource
August 4, 2004 reported Rainbow Trout86810.9 in avg Utah Division of Wildlife Resources
July 22, 2004 reported Brook Trout2452.45 in avg Utah Division of Wildlife Resources
June 30, 2004 reported Rainbow Trout5589.47 in avg Utah Division of Wildlife Resources
April 28, 2004 reported Brown Trout2,9943.56 in avg Utah Division of Wildlife Resources
2003 4 records
2003 stocking records and official sources
Date / statusSpeciesFishSizeSource
July 30, 2003 reported Brook Trout1,0002.92 in avg Utah Division of Wildlife Resources
July 22, 2003 reported Rainbow Trout49010.71 in avg Utah Division of Wildlife Resources
June 20, 2003 reported Brown Trout3,0043.14 in avg Utah Division of Wildlife Resources
June 12, 2003 reported Rainbow Trout5089.11 in avg Utah Division of Wildlife Resources
2002 3 records
2002 stocking records and official sources
Date / statusSpeciesFishSizeSource
July 29, 2002 reported Brook Trout1,0002.94 in avg Utah Division of Wildlife Resources
May 22, 2002 reported Rainbow Trout5108.99 in avg Utah Division of Wildlife Resources
May 14, 2002 reported Brown Trout3,0003.3 in avg Utah Division of Wildlife Resources

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: Utah Division of Wildlife Resources. A record for this water was last checked on . This check date is not a stocking date.

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