Thomas Fork Bear River

Tributary of the Bear River

    Thomas Fork Bear River in Bear Lake County is 30.7 miles in length.

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    Species Observed in Surveys

    Fish Stocking Records

    Date Species Quantity General Size
    1987/06/10 Rainbow Trout 1,020 Catchable (6+ inches)
    1986/06/19 Rainbow Trout 1,005 Catchable (6+ inches)
    1985/06/24 Rainbow Trout 1,007 Catchable (6+ inches)
    1984/06/21 Rainbow Trout 1,045 Catchable (6+ inches)
    1983/06/29 Rainbow Trout 1,035 Catchable (6+ inches)
    1982/06/23 Rainbow Trout 1,120 Catchable (6+ inches)
    1981/07/15 Rainbow Trout 1,520 Catchable (6+ inches)
    1980/07/14 Rainbow Trout 1,020 Catchable (6+ inches)
    1979/08/23 Rainbow Trout 1,225 Catchable (6+ inches)
    1979/08/09 Cutthroat Trout - Unspecified 2,600 Fingerling (3-6 inches)
    1979/08/08 Cutthroat Trout - Unspecified 2,600 Fingerling (3-6 inches)
    1978/07/26 Cutthroat Trout - Unspecified 5,000 Fry (0-3 inches)
    1978/07/26 Rainbow Trout 1,080 Fingerling (3-6 inches)
    1977/07/21 Rainbow Trout 1,008 Catchable (6+ inches)
    1976/07/15 Rainbow Trout 1,050 Catchable (6+ inches)
    1975/07/24 Rainbow Trout 1,020 Catchable (6+ inches)
    1974/07/17 Rainbow Trout 504 Catchable (6+ inches)
    1973/08/11 Cutthroat Trout - Unspecified 20,100 Fry (0-3 inches)
    1973/07/18 Rainbow Trout 1,080 Catchable (6+ inches)
    1972/07/27 Brook Trout 20,210 Fingerling (3-6 inches)
    1971/11/12 Brook Trout 2,830 Fry (0-3 inches)
    1971/08/17 Brook Trout 4,000 Fry (0-3 inches)
    1971/08/05 Brook Trout 1,200 Fry (0-3 inches)
    1971/08/05 Cutthroat Trout - Unspecified 16,000 Fry (0-3 inches)
    1971/07/31 Brook Trout 16,000 Fry (0-3 inches)
    1970/07/20 Cutthroat Trout - Unspecified 20,600 Fry (0-3 inches)
    1969/08/08 Cutthroat Trout - Unspecified 21,760 Fry (0-3 inches)
    Source: IDFG Fish Stocking Database.

    Licenses and Tags

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    Fishing Rules, 2025 - 2027

    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.

    Special Rules

    Bear River tributaries all tributaries including the Cub River and Thomas Fork Bear River
    • Trout limit is 6, no harvest of Cutthroat Trout
    Southeast Region Bag Limits
    Bass (Largemouth and Smallmouth)

    • Bass limit is 6, both species combined
    • None under 14 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 apply when fishing for Brook Trout

    Cisco (Bear Lake only)

    • Cisco limit is 30

    Kokanee

    • Kokanee limit is 6

    Sturgeon

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

    Tiger Muskie

    • Tiger Muskie limit is 2, none under 40 inches

    Trout includes Brown Trout, Lake Trout, Cutthroat Trout, Rainbow Trout, and trout hybrids (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
    • Brook Trout are listed separately

    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 apply when fishing for whitefish

    Protected Nongame Fish includes Northern Leatherside Chub, Bear Lake 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, length or possession limit
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