Little Trinity Lake

Boise River Drainage

    Little Trinity Lake in Elmore County is 8.5 acres.

    Interactive Map
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    Fish Stocking Records

    Date Species Quantity General Size
    2025/09/08 Cutthroat Trout - Westslope 989 Fry (0-3 inches)
    2025/07/16 Rainbow Trout - Triploid 1,179 Catchable (12-14 inches)
    2024/09/06 Cutthroat Trout - Westslope 1,018 Fry (0-3 inches)
    2024/08/28 Rainbow Trout 1,100 Catchable (6+ inches)
    2024/07/22 Rainbow Trout 600 Catchable (12-14 inches)
    2023/09/11 Cutthroat Trout - Westslope 994 Fry (0-3 inches)
    2023/08/15 Rainbow Trout - Triploid 475 Catchable (6+ inches)
    2023/08/02 Rainbow Trout - Triploid 700 Catchable (6+ inches)
    2022/08/18 Rainbow Trout - Triploid 475 Catchable (6+ inches)
    2022/08/12 Cutthroat Trout - Westslope 1,000 Fry (0-3 inches)
    2022/07/21 Rainbow Trout - Triploid 715 Catchable (6+ inches)
    2021/08/18 Rainbow Trout - Triploid 475 Catchable (6+ inches)
    2021/07/26 Cutthroat Trout - Westslope 1,010 Fry (0-3 inches)
    2021/06/24 Rainbow Trout - Triploid 825 Catchable (6+ inches)
    2020/08/25 Cutthroat Trout - Westslope 995 Fry (0-3 inches)
    2020/08/11 Rainbow Trout - Triploid 418 Catchable (12-14 inches)
    2020/07/28 Rainbow Trout - Triploid 644 Catchable (12-14 inches)
    2019/08/28 Cutthroat Trout - Westslope 1,000 Fry (0-3 inches)
    2019/08/21 Rainbow Trout - Triploid 480 Catchable (6+ inches)
    2019/07/16 Rainbow Trout - Triploid 816 Catchable (6+ inches)
    2018/08/16 Cutthroat Trout - Westslope 1,002 Fry (0-3 inches)
    2018/08/14 Rainbow Trout - Triploid 470 Catchable (6+ inches)
    2018/07/18 Rainbow Trout - Triploid 720 Catchable (6+ inches)
    2017/08/10 Rainbow Trout - Triploid 534 Catchable (6+ inches)
    2017/08/03 Cutthroat Trout - Westslope 1,001 Fry (0-3 inches)
    2016/08/25 Rainbow Trout - Triploid 475 Catchable (6+ inches)
    2016/08/16 Cutthroat Trout - Westslope 1,001 Fry (0-3 inches)
    2016/07/15 Rainbow Trout - Triploid 815 Catchable (6+ inches)
    2015/08/25 Rainbow Trout - Triploid 472 Catchable (6+ inches)
    2015/07/27 Rainbow Trout - Triploid 745 Catchable (6+ inches)
    2015/07/21 Cutthroat Trout - Westslope 992 Fry (0-3 inches)
    2014/08/29 Rainbow Trout - Triploid 520 Catchable (6+ inches)
    2014/08/05 Cutthroat Trout - Westslope 1,004 Fry (0-3 inches)
    2014/07/31 Rainbow Trout - Triploid 1,050 Catchable (6+ inches)
    2013/08/06 Cutthroat Trout - Westslope 1,002 Fry (0-3 inches)
    2013/07/23 Rainbow Trout - Triploid 445 Catchable (6+ inches)
    2013/07/09 Rainbow Trout - Triploid 728 Catchable (6+ inches)
    2012/09/07 Cutthroat Trout - Westslope 1,000 Fry (0-3 inches)
    2012/07/23 Rainbow Trout - Triploid 720 Catchable (6+ inches)
    2011/09/07 Cutthroat Trout - Westslope 1,004 Fry (0-3 inches)
    2011/08/30 Rainbow Trout - Triploid 505 Catchable (6+ inches)
    2011/08/02 Rainbow Trout - Triploid 748 Catchable (6+ inches)
    2010/09/15 Cutthroat Trout - Westslope 1,004 Fry (0-3 inches)
    2010/08/24 Rainbow Trout - Triploid 560 Catchable (6+ inches)
    2010/07/22 Rainbow Trout - Triploid 1,875 Catchable (6+ inches)
    2009/09/17 Cutthroat Trout - Westslope 1,000 Fry (0-3 inches)
    2009/08/17 Rainbow Trout - Triploid 480 Catchable (6+ inches)
    2009/07/23 Rainbow Trout - Triploid 736 Catchable (6+ inches)
    2008/09/29 Cutthroat Trout - Westslope 1,000 Fry (0-3 inches)
    2008/08/19 Rainbow Trout - Triploid 720 Catchable (6+ inches)
    2008/07/09 Rainbow Trout - Triploid 600 Catchable (6+ inches)
    2007/08/23 Rainbow Trout - Triploid 420 Catchable (6+ inches)
    2007/08/06 Cutthroat Trout - Yellowstone 1,010 Fry (0-3 inches)
    2007/07/05 Rainbow Trout - Triploid 770 Catchable (6+ inches)
    2006/09/06 Rainbow Trout - Triploid 1,015 Catchable (6+ inches)
    2006/08/28 Cutthroat Trout - Westslope 1,000 Fry (0-3 inches)
    2006/07/25 Rainbow Trout - Triploid 784 Catchable (6+ inches)
    2005/08/25 Rainbow Trout - Triploid 1,500 Catchable (6+ inches)
    2005/08/17 Cutthroat Trout - Yellowstone 1,040 Fry (0-3 inches)
    2004/09/02 Cutthroat Trout - Yellowstone 1,000 Fry (0-3 inches)
    2004/08/19 Rainbow Trout - Triploid 506 Catchable (6+ inches)
    2004/07/20 Rainbow Trout - Triploid 748 Catchable (6+ inches)
    2003/08/26 Cutthroat Trout - Yellowstone 1,000 Fry (0-3 inches)
    2003/08/12 Rainbow Trout - Triploid 1,818 Catchable (6+ inches)
    2003/07/17 Rainbow Trout - Triploid 1,323 Catchable (6+ inches)
    2002/08/21 Rainbow Trout - Triploid 500 Catchable (6+ inches)
    2002/08/19 Cutthroat Trout - Yellowstone 1,000 Fry (0-3 inches)
    2002/07/03 Rainbow Trout - Triploid 750 Catchable (6+ inches)
    2001/08/16 Cutthroat Trout - Yellowstone 1,000 Fry (0-3 inches)
    2001/07/18 Rainbow Trout - Triploid 500 Catchable (6+ inches)
    2001/06/26 Rainbow Trout - Triploid 750 Catchable (6+ inches)
    2000/09/12 Cutthroat Trout - Yellowstone 1,000 Fry (0-3 inches)
    2000/08/01 Rainbow Trout - Triploid 500 Catchable (6+ inches)
    2000/07/12 Rainbow Trout - Triploid 750 Catchable (6+ inches)
    1999/09/08 Cutthroat Trout - Yellowstone 1,000 Fry (0-3 inches)
    1999/08/26 Rainbow Trout 500 Catchable (6+ inches)
    1999/07/22 Rainbow Trout 750 Catchable (6+ inches)
    1998/09/11 Cutthroat Trout - Yellowstone 1,500 Fry (0-3 inches)
    1998/08/19 Rainbow Trout 500 Catchable (6+ inches)
    1998/07/22 Rainbow Trout 750 Catchable (6+ inches)
    1997/09/03 Cutthroat Trout - Yellowstone 1,000 Fry (0-3 inches)
    1997/08/06 Rainbow Trout 500 Catchable (6+ inches)
    1997/07/23 Rainbow Trout 750 Catchable (6+ inches)
    1996/08/27 Rainbow Trout 500 Catchable (6+ inches)
    1996/07/29 Rainbow Trout 750 Catchable (6+ inches)
    1996/07/24 Cutthroat Trout - Yellowstone 1,056 Fry (0-3 inches)
    1995/08/24 Rainbow Trout 500 Catchable (6+ inches)
    1995/08/18 Cutthroat Trout - Yellowstone 1,000 Fry (0-3 inches)
    1995/07/26 Rainbow Trout 750 Catchable (6+ inches)
    1994/09/15 Cutthroat Trout - Yellowstone 1,000 Fry (0-3 inches)
    1994/08/03 Rainbow Trout - Triploid 500 Catchable (6+ inches)
    1993/09/04 Rainbow Trout 1,500 Fry (0-3 inches)
    1992/08/07 Cutthroat Trout - Westslope 1,000 Fry (0-3 inches)
    1991/07/30 Rainbow Trout 1,600 Fingerling (3-6 inches)
    1990/07/02 Rainbow Trout 750 Catchable (6+ inches)
    1990/07/02 Rainbow Trout 1,500 Fingerling (3-6 inches)
    1989/07/18 Rainbow Trout 660 Catchable (6+ inches)
    1988/07/25 Rainbow Trout 770 Catchable (6+ inches)
    1988/06/27 Rainbow Trout 729 Catchable (6+ inches)
    1987/06/22 Rainbow Trout 731 Catchable (6+ inches)
    1986/07/17 Rainbow Trout 765 Catchable (6+ inches)
    1985/07/01 Rainbow Trout 800 Catchable (6+ inches)
    1984/08/03 Rainbow Trout 703 Catchable (6+ inches)
    1982/08/24 Rainbow Trout 725 Catchable (6+ inches)
    1981/07/10 Rainbow Trout 651 Catchable (6+ inches)
    1980/07/14 Rainbow Trout 725 Catchable (6+ inches)
    1979/07/11 Rainbow Trout 725 Catchable (6+ inches)
    1978/07/26 Rainbow Trout 1,225 Catchable (6+ inches)
    1977/06/21 Rainbow Trout 1,700 Catchable (6+ inches)
    1976/07/26 Rainbow Trout 1,000 Catchable (6+ inches)
    1975/07/31 Rainbow Trout 725 Catchable (6+ inches)
    1974/07/17 Rainbow Trout 1,500 Catchable (6+ inches)
    1973/07/16 Rainbow Trout 1,500 Catchable (6+ inches)
    1972/07/24 Rainbow Trout 1,500 Catchable (6+ inches)
    1971/08/03 Rainbow Trout 1,500 Catchable (6+ inches)
    1970/07/20 Rainbow Trout 1,500 Catchable (6+ inches)
    1969/07/09 Rainbow Trout 1,500 Catchable (6+ inches)
    1968/07/02 Rainbow Trout 1,500 Fingerling (3-6 inches)
    Source: IDFG Fish Stocking Database.

    Licenses and Tags

    Learn more about IDFG Licenses, Tags & Permits
     

    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

    Big and Little Trinity Lakes
    • No motors
    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 apply when fishing for Brook Trout

    Bull Trout

    • Bull Trout - catch-and-release

    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, 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
    • Bull Trout and Brook Trout 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 apply 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, length or possession limit
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