Rock Creek flowing through Montana canyon country
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Fly fishing report · West

Rock Creek

Is Rock Creek worth the trip today? Check flow, weather, hatches, access, and rules for Montana before you go.

See the flow chart ↓

Photo: James St. John Opens in a new tab. · CC BY 2.0

Good day to fish?Latest river check
Poor

Not today. Make another plan.

Best option: Float. A float can fit better than wading only if launches, shuttle, boat skill, wind, and local rules all check out.

See update time and confidence
Live data checkHighHow much of the live flow, weather, and alert data came back.
Today's callHighA verified hard stop is active, so the avoid-or-wait decision is clearer than the fishing score itself.
Score calculated Aug 22, 2026, 8:45 PM MDTUsually checks again about every 45 minutes
Best access methodFloat

These scores compare the risks of wading, bank fishing, and floating.

Wade4/100

Wading is the most sensitive plan today. Use protected edges only, avoid crossings, and downgrade quickly if clarity or current feels wrong.

Bank / edgeNot recommended

This report does not recommend bank fishing on this reach.

Float · Best fit19/100

A float can fit better than wading only if launches, shuttle, boat skill, wind, and local rules all check out.

Before you go

Red Flag Warning issued August 22 at 9:08AM MDT until August 23 at 8:00PM MDT by NWS Missoula MT

Your plan

Today's Rock Creek plan.

Rock Creek near Missoula is a famous wade fishery, but the flow, road, and FWP boat closure rules should guide the day. Do not confuse it with other Montana waters named Rock Creek.

Check first
Use the Clinton gauge for lower Rock Creek trend and runoff timing.
Try
Move often and fish pocket water quickly with one or two good drifts per lane.
Leave when
Skip or pivot when runoff makes crossings unsafe, FWP restrictions are active, the canyon road or parking plan is poor, water is too warm for trout handling, or access would require pushing through private land.

Live river check

What the river is doing

Check the latest flow and weather before you go. A quick change can make the river harder or less safe to fish.

Showing the latest stored river check while current readings load.
Flow
276 cfs
From the latest stored river check. Open the official source for the newest reading.Water 65.1°F · 24h high 66.7°F · USGS provisional
Air now
70°F

Current NWS forecast period

Next 24h high
77.0°F

NWS air forecast near

Rain chance
16%

For this forecast period

Latest stored weather check

Slight Chance Showers And Thunderstorms

Slight Chance Showers And Thunderstorms

Wind
3 mph
Weather checked

Recent flow chart is loading

The latest stored reading is shown above. Check the official source below if you need the newest value now.

More forecast and source details
National Weather Service

Rock Creek near Clinton

The National Weather Service forecast is temporarily unavailable.

Live data

Where these readings come from

RiverReports gauge: Rock Creek near Clinton

Water 65.1°F · provisional · 24h high 66.7°F provisionalWater observed · high observed

How to fish it

How to fish Rock Creek today.

Rock Creek is best when flows are dropping and clear enough for safe wading. Fish big stoneflies during the runoff edge, then shift to caddis, PMDs, terrestrials, and fall olives as water settles.

01

Runoff drop

Fish stonefly nymphs, big dries, and streamers in safe bank water.

02

Clear summer flow

Use caddis, PMDs, hoppers, ants, beetles, and light droppers.

03

Low and spooky

Go lighter, fish shade, and approach from downstream.

04

High or rough road

Postpone, fish safer edges, or choose a bigger access-friendly river.

Fishing words used on this page
U.S. Geological Survey (USGS) gauge
A USGS gauge is an official river station that measures flow or water height.
Cubic feet per second (cfs)
Cubic feet per second, or cfs, shows how much water passes the gauge each second.
Nymph
A nymph is a young water insect. Anglers also use the word for a fly that copies it.
Riffle
A riffle is shallow, fast water broken by rocks.
Seam
A seam is the line where fast and slow water meet.
Blue-winged olive (BWO)
Blue-winged olives, or BWOs, are small mayflies that often hatch in cool or cloudy weather.
Caddis
Caddis are small water insects. The adults look a little like tiny moths.
Dry-dropper
A dry-dropper rig has a floating fly with an underwater fly tied below it.
Emerger
An emerger copies an insect as it rises from below the water toward the surface.
Midge
Midges are tiny flies and a common trout food, especially in cold water.
Why this call

Why this score

Public alertHurts

An active alert is in effect: Red Flag Warning issued August 22 at 9:08AM MDT until August 23 at 8:00PM MDT by NWS Missoula MT. Check public safety sources before going.

Best mode nowHurts

Float: A float can fit better than wading only if launches, shuttle, boat skill, wind, and local rules all check out.

Short-term weatherUse caution

The forecast has storm or heavy-precipitation risk, so timing and access matter more than the score alone.

FlowHelps

USGS shows 276 cfs. The flow has been stable over about 6 hours. USGS marks this reading provisional and may revise it. USGS records for this date (1973-2025, 53 readings) show a typical middle range of 190 cfs to 348 cfs. Flow is within the typical range for this date, so weather, temperature, and access become the next checks.

SeasonHelps

Summer: Terrestrials, caddis, and shaded dry-dropper fishing are practical.

Trip notes

Trip notes

Check these before you choose a reach.

Best flows

Use RiverReports and USGS 12334510 near Clinton together. Dropping post-runoff water is the strongest window. High pushy water favors waiting, and low warm water should trigger temperature and restriction checks.

When to leave

Skip or pivot when runoff makes crossings unsafe, FWP restrictions are active, the canyon road or parking plan is poor, water is too warm for trout handling, or access would require pushing through private land.

Local plan

Start with the Clinton flow and one defined canyon access plan. Fish upstream carefully through pocket water, soft seams, and shaded banks instead of trying to cover every turnout.

Backup water

If Rock Creek is high, crowded, warm, or road-limited, compare the Clark Fork for larger water, the Blackfoot for another freestone option, or Flint Creek for a smaller but more access-sensitive plan.

What to try

Rock Creek flies through the year.

Match the time of year, then let rising fish and current speed guide the next change.

SeasonWhat to look forFlies to try

Each fly name opens its matching Fly Box guide.

Access and safety

Rock Creek access and rules.

Use these places as starting points. Open the access link below and check posted signs before you park or enter. Montana FWP rules include Rock Creek-specific artificial-lure, trout, and seasonal fishing-from-boat rules. Check current FWP rules and restrictions before fishing.

Clinton lower creek

Primary gauge and lower-access planning area.

Rock Creek Road

Main access area with many public and private boundary considerations.

Lolo National Forest Rock Creek Area

Official forest access context for camping, roads, and recreation.

Use public pullouts, campgrounds, and posted access. Do not assume all roadside banks are open.

Rock Creek Road can be slow and rough. Leave time for travel and avoid blocking traffic.

FWP boat and method rules are central to the Rock Creek plan, especially July through November.

Compare another river

If this water does not fit the day, check another report before you start the drive.

River sources

Official Rock Creek sources.

Official agencies and primary river operators come first. Secondary tools are labeled so you know what carries the most weight.

How this report was checked

How this report was checked

Trip guidance checked

What was checked: This Rock Creek report is maintained from RiverReports and USGS Clinton flow data, Montana FWP fishing regulations, current closure and restriction sources, stream-access law, Lolo National Forest access information, weather, media-credit, and wade-focused trout planning guidance.

Live measurements and forecasts keep their provider timestamps. Rules, access, and trip guidance use the source-review date shown here. BlueStreamFly planning advice is editorial interpretation, not an agency notice.

First-hand experience: BlueStreamFly does not claim a first-hand visit or local field test for this report unless a real contributor is explicitly named and linked.

See all 7 checked sources

Rules and closures

Check what is allowed, where the rule applies, and whether the river is open.

Flow and weather

Check the latest river reading and forecast before you leave.

Access and land

Check public entry points, land rules, and seasonal access changes.

More helpful links

Use these links for stocking, safety, and other local details.

Source check is old. Last checked . Open the official links now and check for changes.

See something wrong? Report a source problem. Please do not send private spots or private access notes.

Quick answers

Quick Rock Creek answers.

What should I check first before fishing Rock Creek?

Check the Clinton gauge, Rock Creek Road conditions, FWP rules, current restrictions, and weather.

Are there special fishing rules on Rock Creek?

Yes. Rock Creek has important method and seasonal boat-fishing restrictions, so read the current FWP rules.

What flies should I bring for Rock Creek?

Bring the hatch-chart flies, a few confidence nymphs, and a streamer box. Then adjust for water temperature, clarity, and the insects you actually see.

Can I wade Rock Creek?

Yes, it is mostly wade-focused, but runoff and boulders can be serious. Use legal access and avoid private banks.

When should I skip Rock Creek?

Skip it when flows are unsafe, temperatures stress trout, wildfire or emergency closures are active, or legal access for the reach is not clear.