Blair Trail Reservoir (Blair-Trail Diversion Overflow Reservoir)

Snake River Drainage

    Blair Trail Reservoir (Blair-Trail Diversion Overflow Reservoir) in Elmore County is 197.0 acres.

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    Fish Stocking Records

    Date Species Quantity General Size
    2024/10/11 Rainbow Trout - Triploid 2,100 Catchable (12-14 inches)
    2023/10/12 Rainbow Trout - Triploid 2,010 Catchable (6+ inches)
    2016/09/29 Rainbow Trout - Triploid 1,320 Catchable (6+ inches)
    2016/04/19 Rainbow Trout - Triploid 1,200 Catchable (6+ inches)
    2016/03/03 Rainbow Trout - Triploid 1,200 Catchable (6+ inches)
    Source: IDFG Fish Stocking Database.

    Licenses and Tags

    Learn more about IDFG Licenses, Tags & Permits
     

    This is an overflow reserve, subject to seasonally reduced water; the stocked fishery is located to the east and is called Blair Trail Pond.

    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

    No Special Rules for Blair Trail Reservoir (Blair-Trail Diversion Overflow Reservoir).
    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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