Updated October 15, 2026

    Upper Colorado RiverFishing report · river in Colorado

    The lifeblood of the west, the Upper Colorado provides diverse fishing opportunities for both boat and wade anglers.

    River flow last 30 days

    0200400600Sep 17Sep 23Sep 28440 cfs
    Flow now
    423cfs
    Inside the typical range (405–539 cfs)
    Last 7 days
    Rising
    440 to 573 cfs
    Bite report · week of Oct 4

    What's working on Upper Colorado River

    1. 01Excellent fishing conditions with cooler nights and crisp mornings.
    2. 02Consistent Blue-Winged Olive (BWO) hatches, especially on overcast days.
    3. 03Prime window for the prolific October Caddis hatch, providing large dry fly opportunities.
    4. 04Midges remain a crucial year-round food source.
    5. 05Focus on deeper bends, undercut banks, and slower runs due to likely lower water.
    6. 06Consider hopper-dropper rigs in the mornings, transition to BWO dries, and use streamers for aggressive Brown Trout.

    Past reports week by week

    8 weeks

    What to tie on

    Picked from reports, hatches and the season. Tap a fly for the recipe and where else it works.

    dry

    Blue-Winged Olive Comparadun

    #18#20#22

    Consistent Blue-Winged Olive (BWO) hatches are expected in fall, especially on overcast days, making this low-profile dry fly excellent for selective trout feeding on emergers and adults.

    Buy at Amazon
    streamer

    Woolly Bugger

    Leech/baitfish
    #2#4#6#8#10#12

    A slow-stripped or dead-drifted black streamer imitates leeches and sculpins which are active even in cold water, making it a high-searching pattern for larger trout in fall.

    Buy at Amazon
    nymph

    Micro Egg

    Fish Egg
    #14#16#18

    Fall is prime egg season for trout below spawning fish, and this pattern is particularly effective after large trout spawn.

    Buy at Amazon
    terrestrial

    Schroeder’s Parachute Hopper

    #6#8#10

    Terrestrial activity, especially with grasshoppers, can still be strong in early fall, making this an effective attractor for opportunistic feeders along grassy banks.

    dry

    October Caddis (Dry)

    October Caddis (Dicosmoecus) adult
    #6#8#10

    October Caddis is the largest caddis hatch of the year in many western rivers, making this a crucial dry fly imitation in fall.

    Buy at Amazon
    nymph

    Hare's Ear Nymph

    Mayfly nymph (general)
    #12#14#16#18

    A classic and versatile searching nymph, effectively imitating various aquatic insects, and an essential box fly for trout year-round, including fall.

    Buy at Amazon
    nymph

    Zebra Midge

    Midge pupa (Chironomidae)
    #18#20#22#24

    Midges are a primary and consistent food source in tailwaters year-round, effective as a subsurface searching pattern in cooling fall water.

    Buy at Amazon

    Where to fish and who to ask

    Kirk's Fly Shop · Grand LakeThe Colorado Angler · Silverthorne1Parshall AccessParshall Access2State Bridge AccessState Bridge Access
    AccessFly shopGuide trips
    1

    Parshall Access

    A popular float launch and wade fishing area below the Williams Fork confluence.

    40.075°N 106.128°WUSGS 09037000Directions
    2

    State Bridge Access

    A scenic float-fishing stretch known for high cliff walls and aggressive trout.

    39.986°N 106.843°WUSGS 09058000Directions

    Fly shops within 40 miles

    20mi

    Kirk's Fly Shop

    Grand Lake, COGuide trips
    31mi

    The Colorado Angler

    Silverthorne, COGuide trips

    Get Upper Colorado River reports by email

    Every Thursday: conditions, hatches and what's working across Colorado, with Upper Colorado River at the top.

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    Colorado season by season

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

    Quick answers

    Common questions about Upper Colorado River.

    What flies work best on Upper Colorado River?

    Our top scored fly patterns for Upper Colorado River right now are Woolly Bugger (80% confidence), Zebra Midge (80% confidence), Tungsten Bead Pat's Rubber Legs (80% confidence). These picks are scored from recent fishing reports, hatch data, and seasonal patterns.

    What fish species are in Upper Colorado River?

    Upper Colorado River holds Rainbow Trout, Brown Trout, Mountain Whitefish, Brook Trout. See the species links on this page for fly recommendations and seasonal behavior for each.

    What are current flow conditions on Upper Colorado River?

    Live USGS streamflow readings for Upper Colorado River are charted in the sidebar of this page and updated automatically from the nearest gauge.

    Is Upper Colorado River fishing well right now?

    We publish a fresh bite report for Upper Colorado River each week based on recent on-the-water intel. The current report — with conditions, hatches, and what's producing — is on this page.