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Rock Creek

Updated 04/18/2019 at 7:12pm

Conditions At-a-glance


Weather Forecast

Our Report

Rock Creek is perhaps the best option in the Clark Fork drainage for consistent winter and early spring angling. During this time of year, trout are more and more concentrated in the deeper runs and out of the long shallows they inhabit throughout the summer and fall. Nymphing and swinging are the name of the game, but do not rule out rising fish during midge hatches on warmer days, especially when the sun is on the water.

BEST TECHNIQUES – Dries, nymphs, san juan worms. Streamers later in the afternoon.


1. Get your dry fly boxes ready! Fish have been taking dries and droppers.
2. Be ready for high and or off-color water.
3. If you know someone with a boat, float season is upon us.


Rock Creek levels are going to be unpredictable, but, it rarely never fishes. Fish will start taking dries more and more every day. Skwalas, march browns, and caddis are all on the menu. Also, embrace the worm! Good luck from Flint Creek Outdoors. We’re open 7:30-5 Thursday – Monday. Be sure to stop in to talk to Josh, grab a coffee and some Orvis gear, and flies from the the best fly selection in the region.


Levels are unpredictable through runoff, however, Rock Creek rarely never fishes.

The Hatch

Dries, nymphs, san juan worms. Streamers later in the afternoon.

Fly Patterns

NYMPHS - Pat's Rubber Legs, brown, #6; Hare's Ear Nymph, #10-14; Pheasant Tail Nymph, #14-18; Pink San Juan Worm, #8-10; Montana Prince, tan, #12-16 DRIES - BWO's, #16-20; Purple Haze, #10-18 STREAMERS - Sparkle Minnow #6 in Olive; Zonkers #6, 8 in Natural, Olive, or Yellow; Kreelex Fly #6 in Copper/Gold, Gold/Silver, or Purple/Silver.


Water Flow

704 CFS at the mouth.

Link to Water Flow Graph



Water temperature at mid-day

44 deg.

Water Condition

Moderately Turbid

Best time of day to fish

Late morning through late afternoon

Best stretch


Best access point

Upper: Gilles Bridge Lower: Valley of the Moon

Fish species

Cutthroat, rainbow, cutt-bow, brown, bull, some brook trout, and whitefish.

Fishing season

Open year round, but catch and release for trout during winter.

Nearest airport

Missoula International Airport

Recommended fly fishing leader

9' 3x

Recommended fly fishing tippet

3x and 4x top to bottom bug respectively unless you are swinging streamers then bump up to 2x

Best fly fishing rod

Crisp 9' 5wt for nymphing but super fun spot to swing streamers with switch rods.