Updated October 15, 2026
    Access point

    Upper River Sections (Gilmore Summit)on Little Lost River

    More rugged, walk-in access to the upper reaches towards Gilmore Summit.
    Little Lost River reportDirections44.3500°N, 113.4000°W

    Conditions right now

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

    Weather now
    50°F
    Clear Sky, wind 8 mph SE
    Bite report · week of Oct 4

    What's working on Little Lost River

    1. 01Typical fall conditions with comfortable air temperatures and clear skies.
    2. 02Blue-Winged Olives (BWOs) are either actively hatching or about to emerge.
    3. 03Midges remain a consistent food source as water temperatures cool.
    4. 04Trout are bulking up for winter, making baitfish and egg imitations highly effective.
    5. 05Focus on deeper runs, pools, and current seams with good cover.
    6. 06Start with subsurface nymphing, transition to dry flies/emergers as the day warms, and consider streamers for larger trout.

    What to tie on at Upper River Sections (Gilmore Summit)

    Picked from recent reports for this stretch.

    Idaho season by season

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