St. Vrain Creek River Report
12-30-2025
Flows are up and dpwn, with the warm days, and brisk nights. The Lyons area, or below Button Rock have been fishing the best as of recent. Temperatures are also a bit more agreeable to the fish in Lyons rather than up higher, with the Park out of commision in terms of fishing until the spring. Fish will eat well presented dries (usually midge, or midge emerger patterns), nymphs, or smaller streamers, so pick your favorite. One recomendation with the cooler water is to fish in areas with sun to start, especially in the AM. Of note, is that with the weather changes, fish can be very moody, and will take their time, so spend a bit of extra time at each spot. Hatches continue to be midges, BWO's, with midges being the most prevelant hatch.
Please note that we will be updating the River Reports once a week from here on out, typically on Wednesdays.
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For Dries, use a Hi Viz Midge, Griffith's Gnat, Purple Haze, Hi Viz Parachute BWO, Parachute Adams, High Vis No See Em Midge, Mole Fly, and a Hippy Stomper.
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For nymphs, use a RS-2, Zebra Midge, SOS Nymh, Poison Tung, Juju Baetis, Tung TNT, Barr's Pure Midge, AR's Perdigon, EZ Egg, Thin Mint, Jigged Leech, Tung Stud, and Tail Water Tiny.
Guide Rating
4/5
Weather Experienced
- Temperature: Low 50's
- Wind Conditions: Light breeze, becoming calm
- Precipitation: None
Water Observations
- Water Temperature: Lower 40's (Lyons)
- Flow Level: 16.20 CFS
- Water Clarity: Near crystal clear
Fly Fishing the St. Vrain
The creek is full of opportunistic fish that are eager to take a dry fly, so take advantage of the great caddis, blue wing olive and terrestrial fishing. The midges that call the St. Vrain home are active all year and are always a safe bet come the colder months of the year. This is a great chance to get out and test some of those midge patterns that you have been drooling over all winter. The Fishing in the town of Lyons can be fantastic.