Flathead River

Type
Freestone river, Montana (West)
Designation
Among the state's most-fished waters (agency angler survey) · Special-regulation trout water
USGS gauges
3 live
Guides
10 name it
Shops
3 nearby

Today on the Flathead River

Reading the gauge…

Regulations & access Guides & shops

The Flathead River is a freestone river in Montana, listed as Among the state's most-fished waters (agency angler survey) by Montana Fish, Wildlife & Parks.

More about the Flathead River

3 USGS gauges on the water report flow. 11 guides and 3 shops nearby are listed here.

Updated · Sources: Montana's most-fished waters (FWP statewide angling pressure estimates, 2023 license year, top 250 by state rank), USGS Water Data

The Flathead River seen from the bank at Columbia Falls
Photo credit

The Flathead River from the bank at Columbia Falls, Montana. Photo: Mitchell O'Brien, CC BY-SA 4.0, via Wikimedia Commons

Where it is

Flathead River is a freestone river in Montana.

Flow now at 3 gauges
Reading the gauges…

Follow Flathead River for flow alerts

Pick one of its USGS gauges and hear from us when the flow moves into or out of its usual range for the date, or crosses a flow you set. We check the public USGS reading every 2 hours and email only when it crosses, at most once every 6 hours. Flow alone is not a fishing forecast or a safety call.

Follow this water

Signed in: one step. Otherwise we email a confirmation link first. Every alert has one-click links to stop it.

Where to fish

About this

Start from the agency's public access map. Nothing on this page grants or implies access: check the agency map, posted signs and landowner permission before you fish.

Nothing on this page grants or implies access.

Flathead River on the map

About this

Gauges, shops and guides within 40 miles

Map of Flathead River: gauges, shops and guides

RestroomsAccess map

Map of Flathead River with 3 USGS gauges, and shops and guides with an exact address within 40 miles.

Restrooms near Flathead River

Restrooms near Flathead River

Restrooms within 2 miles of Flathead River in a straight line, nearest first, with what anglers found when they went. The map says a restroom is there, not whether it is clean or open today.

No restroom mapped within 2 mi yet — add one you know.

Campgrounds, fishing access sites and boat ramps often have one that isn't on the map yet.

Restroom locations and map details: © OpenStreetMap contributors, Open Database License, read Oct 24, 2026. Ratings, answers and photos are members' own; who shared them is never shown, and every photo is reviewed before it appears. Visits older than 18 months no longer count. Distances are straight-line miles, not driving. Nothing here grants access to private land. Community guidelines.

More water near Flathead River

  • Ennis Lake partly iced over in early spring, with the snow-covered Madison Range across the waterAmong the state's most-fished waters (agency angler survey)Representative photo · not Flathead Lake
    Photo credit

    Ennis Lake, Montana, in March, with the Madison Range beyond. Photo: Gloria Cabada-Leman, CC BY 2.0, via Flickr Not Flathead Lake.

    Flathead Lake

    Montana · about 15 mi

  • Marshy shallows at the edge of Henrys Lake, with the Henrys Lake Mountains behindAmong the state's most-fished waters (agency angler survey)Representative photo · not Lake Mary Ronan
    Photo credit

    Henrys Lake from Henrys Lake State Park, Idaho. Photo: James Postema, CC BY 4.0, via Wikimedia Commons Not Lake Mary Ronan.

    Lake Mary Ronan

    Montana · about 18 mi

  • Lake Billy Chinook filling a basalt canyon, with layered rimrock cliffs along the waterAmong the state's most-fished waters (agency angler survey)Representative photo · not Swan Lake
    Photo credit

    Lake Billy Chinook, Oregon. Photo: icetsarina, CC0, via Wikimedia Commons Not Swan Lake.

    Swan Lake

    Montana · about 25 mi

  • The lower Blackfoot River running deep blue beneath a rocky bank and pine forestAmong the state's most-fished waters (agency angler survey)Representative photo · not Swan River
    Photo credit

    The lower Blackfoot River east of Missoula. Photo: Bureau of Land Management, public domain, via Wikimedia Commons Not Swan River.

    Swan River

    Montana · about 27 mi

  • Aerial view of Eagle Lake beyond the dry bed of Horse LakeAmong the state's most-fished waters (agency angler survey)Representative photo · not Church Slough
    Photo credit

    Eagle Lake, Lassen County, California, with dry Horse Lake in the foreground (aerial). Photo: Ken Lund from Reno, Nevada, USA, CC BY-SA 2.0, via Wikimedia Commons Not Church Slough.

    Church Slough

    Montana · about 32 mi

  • Crowley Lake below a mountain ridge of the Long Valley Caldera, under evening cloudsAmong the state's most-fished waters (agency angler survey)Representative photo · not Echo Lake
    Photo credit

    Crowley Lake and the Long Valley Caldera from US 395. Photo: Clinton Steeds, CC BY 2.0, via Wikimedia Commons Not Echo Lake.

    Echo Lake

    Montana · about 32 mi

Regulations

About this

Seasons, limits, special regulations and closures for each reach are on the agency pages below. Read them before you go.

2 official designations

Each comes from the agency's own published list; where the list names a reach it is quoted. A designation applies to the listed reach, not necessarily the whole water. Listed in the finder under trout.

Guides and shops near Flathead River

About this

Listings marked Unclaimed are built from open map records and the business's own website: confirm licensing, rates, dates and hours directly.

10 guides name it on their website

Guides

  • Fish on Charters, LLC

    Lakeside, MT · 24 mi

    Lake & stillwater · Flathead & Flathead Lake

    • Unclaimed

    Names this water

  • Wild Trout Adventures

    Bigfork, MT · 27 mi

    Float trips · Drift boat · Flathead & Swan

    • Unclaimed

    Names this water

  • Big Sky Fishing Charters

    Bigfork, MT · 27 mi

    Lake & stillwater · Beginners & lessons · Flathead & Flathead Lake

    • Unclaimed

    Names this water

  • Howe's Fishing-A Able and Mo Fisch Charters

    Bigfork, MT · 28 mi

    Lake & stillwater · Flathead & Flathead Lake

    • Unclaimed

    Names this water

  • Outcast Guiding & Outfitters

    Kalispell, MT · 31 mi

    Beginners & lessons · Flathead & Flathead Lake

    • Unclaimed

    Names this water

  • Outcast Guiding & Outfitters

    Columbia Falls, MT · 41 mi

    Beginners & lessons · Flathead & Flathead Lake

    • Unclaimed

    Names this water

  • Flathead Fly Fishing Guides

    Columbia Falls, MT · 48 mi

    Float trips · Drift boat · Missouri & Flathead

    • Unclaimed

    Names this water

  • Montana Fishing Guides

    Columbia Falls, MT · 49 mi

    Float trips · Drift boat · Blackfoot & Clark Fork

    • Unclaimed

    Names this water

3 shops nearby

How these are chosen

Guides whose own website names this water come first, nearest first. Distances are straight-line.

Shops: fly shops first. A distance is shown when the shop’s website gives its location (within 60 miles); otherwise the shop is in one of the towns within 25 miles of the water.

Guide and shop listings come from the Legendary directories.

Species and hatches

About this

What 6 nearby guide websites mention: what guides advertise, not a survey or a promise of what you will catch.

Named on 6 nearby guide websites

  • Mountain whitefish5
  • Northern pike4
  • Lake trout3
  • Chinook salmon2
  • Cutthroat trout2
  • Walleye2
  • Arctic grayling1
  • Bull trout1

When the bugs come off

Regional hatch months: Northern Rockies
About this chart

5 hatches charted for the region, not measured on this water. From Montana Fish, Wildlife & Parks.

  1. January: no charted hatch
  2. February: no charted hatch
  3. March: no charted hatch
  4. April: no charted hatch
  5. May: 3 charted hatches
  6. June: 2 charted hatches
  7. July: 2 charted hatches
  8. August: 1 charted hatch
  9. September: 1 charted hatch
  10. October: no charted hatch
  11. November: no charted hatch
  12. December: no charted hatch

Mother's Day caddis (Grannom) (May) · Salmonfly (May to June) · Salmonfly (May to July) · Salmonfly (July) · Trico (August to September)

How we put this together

Named by guides nearby (within 40 miles), counted from the species each guide lists on its own site. No agency page we hold lists species for this water.

Plan a trip here

About this

None of our destination hubs is within 40 miles in a straight line. The trip planner builds a trip around the water itself: the guides and shops listed within 40 miles of it, its gauges and its nearest towns and airports.

No hub within 40 miles

Gear checklist

About this

A wade-fishing checklist for big western trout rivers: a 9 ft 5–6 weight outfit, nymph, dry and streamer setups, waders, boots and a wading staff, with estimated prices by tier and where to buy.

A woman in waders and a sun hat wades a broad river and casts, bluffs on the far bank

Big western rivers (wade fishing)

9′ rod, 5–6 weight, floating line · Rainbow and brown trout, whitefish

Open the checklist
Videos for this water (5)

Watch: reading a trout stream

About this

Seams, shelves and soft water, shown on real rivers.

Public YouTube videos from established channels, chosen by us to support this page. Not sponsored; the creators are not affiliated with Legendary Fly Gear.

  • How I Learned to Read Water (Fly Fishing)Embedded from YouTube · Mad River Outfitters · not affiliated with Legendary Fly Gear. Watch on YouTube
  • How To Read The Water with Tom RosenbauerEmbedded from YouTube · The New Fly Fisher · not affiliated with Legendary Fly Gear. Watch on YouTube
  • Reading the Water to Successfully Locate TroutEmbedded from YouTube · Orvis Guide to Fly Fishing · not affiliated with Legendary Fly Gear. Watch on YouTube

Not sponsored All videos on reading water

Watch: nymphing basics

About this

Indicator rigs, depth and detecting the take.

Public YouTube videos from established channels, chosen by us to support this page. Not sponsored; the creators are not affiliated with Legendary Fly Gear.

  • 90° Nymph RigEmbedded from YouTube · Huge Fly Fisherman · not affiliated with Legendary Fly Gear. Watch on YouTube
  • Casting with an Indicator & Better Nymphing TechniquesEmbedded from YouTube · The New Fly Fisher · not affiliated with Legendary Fly Gear. Watch on YouTube

Not sponsored All videos on nymphing

Fish Tales

About this

Trip stories anglers chose to share publicly and tagged with Flathead River.

No stories from here yet.

Sources for this page

Not a statement of access, fish presence or conditions.

Something wrong?

All 13 sources and dates

A water page organises discovery. It does not assert public access, legal access, current fish presence, guide availability or fishing conditions.

Flows, gauge statistics and flood stages come from USGS and the National Weather Service when the page is shown. Regulations, stocking, species and season statements link to the agency that publishes them; this page copies only the species names and the quoted sentences. Guide and shop listings come from the Legendary directories. Position: the USGS gauge Flathead River near Polson MT. Water type is our own classification.