Fly Fishing at South Boulder Creek (Below Gross), Colorado
Rating: 4/5
Current River Conditions
Tue Oct 20 2026 00:00:00 GMT-0600 (Mountain Daylight Time)
Flows are currently at a great level below Gross Reservoir. Midges and BWO's are the remaining hatches, and fish are responding well to dry flies right now. We suggest nymphing until you see a decent hatch, but some hopper-dropper action has brought fish in during the warmer days. Please keep in mind brown trout are beginning to stage up for the spawn, leave spawning fish alone and be aware of redds so you don't fish on them nor walk on or near them.
Dry Flies:
- Mole Fly
- Galloup's Goober Midge
- Bunny Midge
- Comparadun
- Ms. Tickle Cripple
- Zelon Cripple
- Double Stack Chubby
- Donkey Kong Hopper
- Jake's Gulp Beetle
Nymphs:
- Sunny Side Up
- Otter's Embryo Egg
- Jig Fullback Napoleon
- Hilbert's Sexi Top May
- Boroff's Barbless Gooey Midge Pupa
- Tungsten Zebra Midge
- Poly Wing RS2
- Crystal Bender
- Barbless Jig Duracell
- Juan's Bling Midge 2.0
