Clark Fork River behind Bearmouth Rest Area in Montana
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Clark Fork River

Photo: PinchyCC Opens in a new tab. · CC BY 4.0

Should I go fishing?

Go with caution.

Flow is high for this time of year.

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

Check first: Water temperature is unconfirmed. Use a stream thermometer before fishing.

Rating updatedRiver local time:

Why this recommendation?

USGS shows 2,660 cfs. The flow has been stable over about 6 hours. USGS marks this reading provisional and may revise it. USGS records for this date (1930-2024, 95 readings) show a median near 2,150 cfs and the upper quartile near 2,570 cfs; today's flow is high for the date. Fishable water may exist, but do not rate it highly without a safe access, clarity, and wading or boat plan.

Available live dataHighHow much of the live flow, weather, and alert data came back.
Confidence in this recommendationMediumWater temperature not verified; do not use this score to clear warm-water risk.
Usually checks again about every 45 minutes

If you go

Check first
Use the below-Missoula gauge for the main page flow trend and watch smaller stream clarity.
Try
Pick a reach first: town, below-town, or downstream float water each fishes differently.
Leave when
Skip or narrow the plan when FWP restrictions are active, smaller stream color makes the reach unreadable, heat compromises trout handling, or parking and legal river entry are unclear.

Flow and weather

Showing server-checked river conditions while current readings refresh.
Flow
2,660 cfs
From the latest stored river check. Open the official source for the newest reading.
Air forecast
48°F
Next 24h high
70.0°F

NWS air forecast near

Rain chance
0%

This is an air forecast, not a river-temperature reading. Check the water with a stream thermometer before fishing in hot weather.

Latest stored weather check

Mostly Cloudy

Wind
7 mph
Weather checked
More forecast and source details

Mostly Cloudy

National Weather Service

Clark Fork River near Missoula

The National Weather Service forecast is temporarily unavailable.

Live data

Where these readings come from

RiverReports gauge: Clark Fork River below Missoula

Flies for this time of year

Seasonal starting points, not a live hatch report. Match what you see on the water.

See flies for every season
SeasonWhat to look forFlies to try

Each fly name opens its matching Fly Box guide.

More fishing tips

Methods, fish species and trip notes

How to fish Clark Fork River today.

The Clark Fork is best when flows are stable, clarity is improving, and temperatures stay trout-safe. If the river is big, brown, or warm, move to safer edges or a colder nearby water.

Dropping post-runoff

Fish banks, side channels, soft riffles, rubberlegs, and streamers.

Clear summer flow

Use caddis, PMDs, hoppers, ants, and small droppers through riffles and banks.

Rising or stained

Fish edges only if safe and avoid wading pushy crossings.

Warm low water

Check restrictions and switch to early mornings or another river if trout are stressed.

Wading, bank fishing or floating?
Best access methodFloating

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

Wading42/100

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

Bank fishing54/100

Bank and edge fishing is the safer default when water is high, pushy, or not fully verified.

Floating · Best fit66/100

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

Full river report

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

This page focuses on the Clark Fork through and below Missoula. The river changes quickly after the Blackfoot, Bitterroot, and Rock Creek influences, so check the right gauge and current restrictions before choosing a reach.

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

FlowUse caution

USGS shows 2,660 cfs. The flow has been stable over about 6 hours. USGS marks this reading provisional and may revise it. USGS records for this date (1930-2024, 95 readings) show a median near 2,150 cfs and the upper quartile near 2,570 cfs; today's flow is high for the date. Fishable water may exist, but do not rate it highly without a safe access, clarity, and wading or boat plan.

Best mode nowUse caution

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

SeasonHelps

Fall: BWOs, mahoganies, October caddis, and streamers are practical.

WeatherHelps

The current NWS air forecast is about 48F, and the next 24-hour high reaches about 70F. Mostly Cloudy.

Public alertsHelps

No active NWS alert was returned for this forecast point.

Trip notes

Check these before you choose a reach.

Best flows

Use RiverReports and USGS 12353000 below Missoula together. Stable or dropping flow with improving clarity is the better window. Big, brown, rising, or warm water should push the plan to softer banks or another river.

When to leave

Skip or narrow the plan when FWP restrictions are active, smaller stream color makes the reach unreadable, heat compromises trout handling, or parking and legal river entry are unclear.

Local plan

Start by choosing town water, below-town water, or a downstream float. Match flies and safety to that reach instead of applying one Clark Fork plan to the whole drainage.

Backup water

If the Clark Fork is high, dirty, warm, or crowded, compare the Blackfoot for colder freestone water, the Bitterroot for a valley hatch plan, or Rock Creek for a more wade-focused day.

Clark Fork River access and rules.

Use these places as starting points. Open the access link below and check posted signs before you park or enter.

Before you go

Montana FWP rules and current restrictions control trout, pike, harvest, methods, closures, and temperature-related limits. Check the current rules for the exact reach.

Where to access the river

Missoula town reach

Good for quick access, but still requires current, temperature, and courtesy checks.

Below Missoula gauge reach

Primary page flow context after major smaller stream influence.

Alberton area

More float- and safety-focused. Do not treat it like simple wade water.

  • Montana stream access allows use below ordinary high-water marks, but it does not grant access across private land.
  • Bridge and town access can be crowded. Park legally and avoid cutting banks or trespassing.
  • Check current FWP restrictions and fish-consumption guidance before keeping fish from Clark Fork drainage reaches.

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

Sources and report details

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

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.

See all 6 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.

How this report was checked

How this report was checked

Trip guidance checked

What was checked: This Clark Fork River report is maintained from RiverReports and USGS below-Missoula flow data, Montana FWP fishing regulations, current closure and restriction sources, stream-access law, weather, media-credit, and Missoula-area freestone planning sources.

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.

Quick questions

What should I check first before fishing the Clark Fork River?

Check the below-Missoula gauge, clarity, FWP current restrictions, weather, and your exact access point.

Are there special fishing rules on the Clark Fork River?

Yes. The Clark Fork has section-by-section rules and current restrictions can change during heat, fire, or emergency events.

What flies should I bring for the Clark Fork River?

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 the Clark Fork River?

Yes around some public access, but the river is large and pushy. Use official access and avoid crossing private land.

When should I skip the Clark Fork River?

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