Updated October 15, 2026
    Access point

    Jeffrey City Areaon Sweetwater River

    Access points near the former uranium mining town of Jeffrey City, providing entry to the river's middle sections.
    Sweetwater River reportDirections42.4700°N, 107.8700°W
    Bite report · week of Oct 4

    Blue-Winged Olives (Baetis sp

    1. 01Blue-Winged Olives (Baetis sp.) are peaking this month, especially on overcast afternoons.
    2. 02Midge activity is strong and consistent, offering reliable subsurface opportunities throughout the day.
    3. 03Deeper runs, slower pools, and areas with good structure are key focus points as water temperatures drop.
    4. 04Olive Woolly Buggers and Meat Whistles are excellent for aggressive, larger trout looking for substantial meals.
    5. 05On warmer fall days, terrestrials like hoppers can still be effective along grassy banks.

    What to tie on at Jeffrey City Area

    Picked from recent reports for this stretch.

    dry80%

    Comparadun (BWO)

    #18#20#22#24

    Blue-Winged Olives are active in Wyoming during spring. This dry fly is effective for opportunistic trout feeding on adults if a hatch briefly occurs on overcast days.

    Buy at Amazon
    nymph80%

    Tungsten Bead Pat's Rubber Legs

    #4#6#8#10

    A heavy stonefly nymph is essential for getting deep in high, off-color water, imitating a critical food source before and during major stonefly hatches.

    Buy at Amazon
    nymph80%

    San Juan Worm

    #10#12#14

    Effective in runoff conditions, as aquatic worms are frequently washed into the river, providing an easy meal for trout.

    Buy at Amazon
    streamer80%

    Black Woolly Bugger

    #4#6#8

    A versatile streamer for enticing aggressive strikes in higher, colder flows, effectively imitating leeches and baitfish.

    nymph80%

    Flashback Baetis Nymph

    #18#20#22

    Targets actively feeding trout subsurface during early spring Blue-Winged Olive nymph activity.

    nymph80%

    Zebra Midge (Black)

    #20#22#24

    A year-round staple in cold water environments, consistently effective when other hatches are absent and trout are keying on midges.

    dry80%

    Glo Bug (Orange)

    #14#16

    To imitate eggs from the ongoing or upcoming spring rainbow spawn, which can be a significant food source for trout.

    dry80%

    Blue-Winged Olive Comparadun

    #18#20#22

    Blue-Winged Olives are a primary fall hatch on freestone rivers, making this low-profile dry fly essential for selective trout feeding on emergers and adults.

    streamer80%

    Meat Whistle

    #2#4#6

    This streamer is excellent for targeting aggressive, larger brown trout that are looking for a substantial meal in the colder fall water, imitating baitfish.

    Buy at Amazon

    Wyoming 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.

    All fly shops