Fourth Fork Rock Creek

Tributary of the Rock Creek

    Fourth Fork Rock Creek in Cassia and Twin Falls Counties is 6.8 miles in length.

    Interactive Map
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    Species Observed in Surveys

    Fish Stocking Records

    Date Species Quantity General Size
    2016/10/12 Brown Trout 4,512 Catchable (6+ inches)
    2015/06/10 Rainbow - Troutlodge Triploid 1,335 Catchable (6+ inches)
    2014/10/22 Brown Trout 4,966 Catchable (6+ inches)
    2005/08/09 Rainbow - Troutlodge Triploid 1,620 Catchable (6+ inches)
    2005/07/25 Rainbow - Troutlodge Triploid 1,190 Catchable (6+ inches)
    2005/07/11 Rainbow - Troutlodge Triploid 1,190 Catchable (6+ inches)
    2005/06/22 Brown Trout 2,420 Fingerling (3-6 inches)
    2005/06/20 Hayspur Kamloops Triploid 98 Catchable (6+ inches)
    2005/05/16 Rainbow - Troutlodge Triploid 812 Catchable (6+ inches)
    2004/07/27 Rainbow - Troutlodge Triploid 85 Catchable (6+ inches)
    2004/06/22 Rainbow - Troutlodge Triploid 336 Catchable (6+ inches)
    2004/05/14 Rainbow - Troutlodge Triploid 504 Catchable (6+ inches)
    2004/04/27 Brown Trout 9,064 Fry (0-3 inches)
    2002/12/13 Rainbow Unspecified 747 Catchable (6+ inches)
    2002/08/28 Rainbow - Troutlodge Triploid 780 Catchable (6+ inches)
    2002/08/09 Rainbow - Troutlodge Triploid 774 Catchable (6+ inches)
    2002/07/19 Rainbow - Troutlodge Triploid 925 Catchable (6+ inches)
    2002/07/02 Rainbow - Troutlodge Triploid 925 Catchable (6+ inches)
    2002/05/24 Rainbow - Troutlodge Triploid 754 Catchable (6+ inches)
    2001/07/27 Rainbow - Troutlodge Triploid 675 Catchable (6+ inches)
    2000/09/01 Rainbow - Hayspur Triploid 800 Catchable (6+ inches)
    2000/08/11 Rainbow - Hayspur Triploid 775 Catchable (6+ inches)
    2000/07/28 Rainbow - Hayspur Triploid 925 Catchable (6+ inches)
    2000/07/14 Rainbow - Hayspur Triploid 925 Catchable (6+ inches)
    2000/06/29 Rainbow - Hayspur Triploid 850 Catchable (6+ inches)
    2000/06/16 Rainbow - Hayspur Triploid 500 Catchable (6+ inches)
    2000/05/26 Rainbow - Hayspur Triploid 500 Catchable (6+ inches)
    2000/05/24 Rainbow - Hayspur Triploid 500 Catchable (6+ inches)
    1999/09/03 Domestic Kamloops 775 Catchable (6+ inches)
    1999/08/13 Domestic Kamloops 775 Catchable (6+ inches)
    1999/07/30 Domestic Kamloops 900 Catchable (6+ inches)
    1999/07/16 Domestic Kamloops 900 Catchable (6+ inches)
    1999/07/02 Domestic Kamloops 900 Catchable (6+ inches)
    1999/06/25 Rainbow Unspecified 500 Catchable (6+ inches)
    1999/05/28 Rainbow Unspecified 500 Catchable (6+ inches)
    1998/09/04 Domestic Kamloops 775 Catchable (6+ inches)
    1998/08/14 Domestic Kamloops 775 Catchable (6+ inches)
    1998/07/31 Domestic Kamloops 925 Catchable (6+ inches)
    1998/07/24 Domestic Kamloops 925 Catchable (6+ inches)
    1998/07/01 Domestic Kamloops 1,350 Catchable (6+ inches)
    1998/06/12 Mt Lassen Rainbow 600 Catchable (6+ inches)
    1998/05/22 Domestic Kamloops 500 Catchable (6+ inches)
    1997/08/29 Domestic Kamloops 675 Catchable (6+ inches)
    1997/08/14 Domestic Kamloops 700 Catchable (6+ inches)
    1997/08/01 Domestic Kamloops 925 Catchable (6+ inches)
    1997/07/17 Domestic Kamloops 925 Catchable (6+ inches)
    1997/07/01 Domestic Kamloops 1,450 Catchable (6+ inches)
    1997/06/30 Mt Lassen Rainbow 600 Catchable (6+ inches)
    1996/09/20 Domestic Kamloops 625 Catchable (6+ inches)
    1996/08/29 Rainbow Unspecified 1,400 Catchable (6+ inches)
    1996/08/09 Domestic Kamloops 1,000 Catchable (6+ inches)
    1996/07/26 Domestic Kamloops 1,000 Catchable (6+ inches)
    1996/07/02 Domestic Kamloops 1,200 Catchable (6+ inches)
    1995/06/30 Rainbow - Hayspur Diploid 3,158 Catchable (6+ inches)
    1995/05/26 Domestic Kamloops 1,742 Catchable (6+ inches)
    1994/09/16 Troutlodge 675 Catchable (6+ inches)
    1994/09/01 Domestic Kamloops 775 Catchable (6+ inches)
    1994/09/01 Troutlodge 775 Catchable (6+ inches)
    1994/08/12 Troutlodge 775 Catchable (6+ inches)
    1994/07/27 Troutlodge 775 Catchable (6+ inches)
    1994/06/30 Troutlodge 775 Catchable (6+ inches)
    1994/06/15 Troutlodge 775 Catchable (6+ inches)
    1994/06/03 Troutlodge 775 Catchable (6+ inches)
    1994/05/27 Troutlodge 3,300 Catchable (6+ inches)
    1993/09/13 Rainbow Unspecified 675 Catchable (6+ inches)
    1993/08/03 Erwin Rainbow 190 Catchable (6+ inches)
    1993/07/19 Erwin Rainbow 790 Catchable (6+ inches)
    1993/06/22 Domestic Kamloops 350 Catchable (6+ inches)
    1993/06/22 Erwin Rainbow 350 Catchable (6+ inches)
    1992/09/10 Domestic Kamloops 350 Catchable (6+ inches)
    1992/08/11 Domestic Kamloops 350 Catchable (6+ inches)
    1992/06/29 Domestic Kamloops 700 Catchable (6+ inches)
    1992/06/09 Troutlodge 348 Catchable (6+ inches)
    1992/05/18 Troutlodge 350 Catchable (6+ inches)
    1990/09/10 Rainbow - Hayspur Diploid 363 Catchable (6+ inches)
    1990/08/14 Rainbow - Hayspur Diploid 350 Catchable (6+ inches)
    1990/07/25 Mt Lassen Rainbow 350 Catchable (6+ inches)
    1990/06/21 Rainbow Unspecified 360 Catchable (6+ inches)
    1990/05/14 Rainbow Unspecified 361 Catchable (6+ inches)
    1989/08/23 Rainbow - Hayspur Diploid 174 Catchable (6+ inches)
    1989/07/13 Rainbow - Hayspur Diploid 314 Catchable (6+ inches)
    1989/06/21 Rainbow Unspecified 352 Catchable (6+ inches)
    1989/05/18 Rainbow Unspecified 1,000 Fingerling (3-6 inches)
    1988/09/13 Mt Lassen Rainbow 378 Catchable (6+ inches)
    1988/08/09 Mt Lassen Rainbow 378 Catchable (6+ inches)
    1988/07/11 Mt Lassen Rainbow 535 Catchable (6+ inches)
    1988/06/06 Mt Lassen Rainbow 362 Catchable (6+ inches)
    1987/09/18 Mt Lassen Rainbow 361 Catchable (6+ inches)
    1987/08/04 Mt Lassen Rainbow 360 Catchable (6+ inches)
    1987/07/08 Mt Lassen Rainbow 348 Catchable (6+ inches)
    1987/06/11 Mt Lassen Rainbow 350 Catchable (6+ inches)
    1987/05/15 Mt Lassen Rainbow 1,008 Catchable (6+ inches)
    1986/09/30 Mt Lassen Rainbow 460 Catchable (6+ inches)
    1986/08/19 Rainbow Unspecified 350 Catchable (6+ inches)
    1986/07/10 Mt Lassen Rainbow 360 Catchable (6+ inches)
    1986/06/20 Mt Lassen Rainbow 352 Catchable (6+ inches)
    1985/06/04 Rainbow Unspecified 435 Catchable (6+ inches)
    1984/08/23 Rainbow Unspecified 230 Catchable (6+ inches)
    1983/08/31 Rainbow Unspecified 230 Catchable (6+ inches)
    1983/06/20 Rainbow Unspecified 430 Catchable (6+ inches)
    1980/08/27 Rainbow Unspecified 495 Catchable (6+ inches)
    1978/09/06 Rainbow Unspecified 3,360 Catchable (6+ inches)
    1972/08/31 Cutthroat 4,860 Fry (0-3 inches)
    Source: IDFG Fish Stocking Database.

    Licenses and Tags

    Learn more about IDFG Licenses, Tags & Permits
     

    Fishing Rules, 2022 - 2024

    All Waters Open All Year

    Except as modified in Special Rules
    Fishing is not allowed within the posted upstream and downstream boundary of any fish weir or trap.

    Daily Bag Limits

    The following daily bag limits apply to all waters within each region except as modified in the Special Rules. The possession limit is 3-times the daily bag limit after the second day of the season.

    Special Rules

    No Special Rules for Fourth Fork Rock Creek.
    Magic Valley Region Bag Limits
    Bass (Largemouth and Smallmouth)

    • Bass limit is 6, both species combined
    • None under 12 inches

    Brook Trout

    • Brook Trout limit is 25
    • Harvest allowed during any open season unless otherwise noted under Special Rules - if gear or bait restrictions are listed, they must be followed when fishing for Brook Trout

    Bull Trout

    • Bull Trout limit is 0, catch-and-release

    Kokanee

    • Kokanee limit is 6

    Sturgeon

    • Sturgeon limit is 0, catch-and-release
    • Sturgeon must not be removed from the water and must be released upon landing
    • Barbless hooks are required
    • Use of a sliding swivel device to secure a weight, and a lighter test line to secure weight to sliding swivel device is required. See fishing regulations for details

    Tiger Muskie

    • Tiger Muskie limit is 2, none under 40 inches

    Trout includes Brown Trout, Lake Trout, Golden Trout, Arctic Grayling, Cutthroat Trout, Rainbow Trout, land-locked Chinook and Coho Salmon, trout hydrids (.e.g. Tiger Trout)

    • Trout limit is 6, all species combined
    • In rivers and streams, only 2 of the 6 trout may be Cutthroat Trout
    • Does not include Bull Trout and Brook Trout which are listed separately

    Walleye

    • Walleye limit is 6

    Whitefish

    • Whitefish limit is 25
    • Harvest allowed during any open season unless otherwise noted under Special Rules - if gear or bait restrictions are listed, they must be followed when fishing for whitefish

    Protected Nongame Fish includes Northern Leatherside Chub, Shoshone Sculpin, Wood River Sculpin, and Bluehead Sucker (also known as Green Sucker)

    • May not be harvested or possessed

    All Other Fish Species includes bullfrogs and crayfish

    • No bag, size or possession limit
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