Updated October 15, 2026
    Access point

    Munday Gulch Accesson Weiser River

    Provides access to more rural sections of the river upstream from Weiser, offering more solitude.
    Weiser River reportDirections44.3312°N, 116.8924°W

    Conditions right now

    No USGS gauge is linked to this water yet, so we can't chart flows.

    Weather now
    55°F
    Overcast, wind 11 mph NE
    Bite report · week of Oct 4

    Blue-Winged Olives (Baetis) are a reliable fall hatch

    1. 01Blue-Winged Olives (Baetis) are a reliable fall hatch, especially on overcast days.
    2. 02Midges remain a consistent subsurface food source for trout throughout the day.
    3. 03Larger protein sources like crayfish and baitfish become increasingly important for both trout and bass.
    4. 04Rainbow Trout and Smallmouth Bass are the primary target species, with individual fish typically ranging from 6-8 inches.
    5. 05Focus on deeper runs, slow eddies, and rocky current breaks for optimal success.

    What to tie on at Munday Gulch Access

    Picked from recent reports for this stretch.

    popper80%

    Gurgler

    #2/0#1/0#2#4#6

    Topwater action for Smallmouth Bass is excellent in summer as water temperatures warm, and this popper creates an enticing disturbance.

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    nymph80%

    San Juan Worm

    #10#12#14

    Year-round, especially after rainfall or runoff, as aquatic worms are easily washed into the system, making it highly effective for trout in the Weiser River's higher spring flows.

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    nymph80%

    Tungsten Bead Pat's Rubber Legs

    #4#6#8#10

    Year-round, especially in winter and before stonefly hatches, this heavy nymph provides essential weight to get into the feeding zone during higher spring flows and imitates a significant food source for trout.

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    nymph80%

    Flashback Pheasant Tail Nymph

    #14#16#18

    An excellent general searching nymph for early spring, mimicking various mayfly nymphs that are active year-round and particularly as BWOs begin to emerge.

    nymph80%

    Hellgrammite Fly

    #4#6#8

    Smallmouth bass in rocky rivers key on these large larvae year-round. Dragging a hellgrammite slowly through deep rocky holes can produce bass in the Weiser River.

    dry80%

    Mother's Day Caddis

    #14#16#18

    The prolific Mother's Day Caddis hatch is expected in late April through May, making this dry fly a perfect imitation for adult caddis that will draw aggressive strikes from rising trout.

    terrestrial80%

    Schroeder's Hi-Vis Hopper

    #6#8#10

    Grasshoppers are abundant along the Weiser River's grassy banks in summer, making this a prime terrestrial imitation for Rainbow Trout.

    nymph80%

    Flashback Hare's Ear Nymph

    #14#16#18

    An excellent general searching nymph, mimicking various aquatic insects active subsurface and appealing to opportunistic trout feeding below the surface.

    dry80%

    Blue-Winged Olive Comparadun

    #18#20#22

    Blue-Winged Olives are actively hatching in early spring, especially on overcast days, and this low-profile dry fly is excellent for selective trout feeding on emergers and adults.

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    Idaho season by season

    What changes on the water through the year, with the flies for each season.

    Fly shops nearby

    Local flies, current advice and guided trips.

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