TroutFishingOpen App

Trout fishing forecasts for 108 rivers in 30 states

Know before you go.
Is the river worth it today?

One score from 1 to 10, the best window of the day, and the fly to tie on first. Built from the live USGS gauge and hourly weather on your river, updated every hour.

Check your riverHow the score works
  • Free to start
  • No signup to check a river
  • Live USGS water data

Live: pick a river, read today's verdict

  1. 1State
  2. 2River
  3. 3Verdict

Where are you fishing?

At a glance

Everything you need to decide, before you drive.

One screen tells you whether the river is worth it today, when to be there, and what to tie on. The rest of the guide is there when you want it.

TroutFishing app showing today's verdict, a fishing timeline, and active hatches for the Pine River
TroutFishing app showing ranked fly recommendations with the Zebra Midge as the top pick

  1. 01

    The verdict, in one number

    Weather, water temperature, flow stability, moon phase, and hatch activity are weighed into a single 1 to 10 score. Green means go.

  2. 02

    When to actually be on the water

    A timeline marks the peak and secondary windows for the day, so you can plan around work instead of guessing at dawn.

  3. 03

    What to tie on first

    Fly picks ranked by confidence, matched to the hatches and water temperature the river is reporting right now.

How it works

Three steps between you and a straight answer.

  1. 01

    Pick your river

    Choose from 100+ trout rivers across 30 states. No account, no download. It works in the browser you already have.

  2. 02

    We read the river for you

    Live USGS flow and temperature, hourly weather, moon phase, and the hatch calendar for that specific water are scored together.

  3. 03

    Go, or save the gas

    You get a clear verdict, the best window of the day, and the fly to tie on first. Check back any morning; it updates hourly.

What's under the hood

Real gauges. Real weather. No vibes.

The score is only as good as its inputs, so we use the same sources a guide would check, pulled together every hour.

  • USGS Water Services

    Streamflow (CFS) and water temperature pulled from the gauge on your river, not a regional average.

  • Open-Meteo hourly weather

    Air temperature, pressure trend, wind, cloud cover, and precipitation, hour by hour for the next 10 days.

  • River-specific hatch calendars

    Emergence windows, water-temperature triggers, and spawning periods keyed to each river and its trout species.

“Checked the forecast before my trip to the Pere Marquette. The fly pick was spot on. Landed my biggest brown of the year.”
Ken B. · Michigan
108 rivers30 statesHourly updates

Featured waters

Start with a river anglers ask about most.

Each guide has today's verdict, the hatch chart, access points, regulations, and the flies that work.

30 states covered

Find the trout water near you.

Forecasts for 108 rivers across 30 US states, from Maine spring creeks to Oregon tailwaters.

Questions

Before you tie on.

Is TroutFishing really free?

Yes. You can open the app and check today’s forecast for your rivers without creating an account or entering a card.

How is the fishing score calculated?

Each day gets a 1 to 10 score built from live USGS flow and water temperature, hourly weather, barometric trend, solunar periods, and the hatch and spawning calendar for that river. The score is recomputed hourly as conditions change.

Which rivers are covered?

More than 100 trout rivers across 30 US states, from Western tailwaters like the South Fork Snake to Eastern freestones like Penns Creek and the Beaverkill. Browse by state below to see what is near you.

Do I need to install an app?

No. TroutFishing runs in your phone or desktop browser. If you want it on your home screen, your browser will offer to add it, and it works offline for the rivers you have already loaded.

How accurate are the fly recommendations?

Fly picks are matched to the hatches expected at the current water temperature and time of year on your river, then ranked by confidence. They are a strong starting point, not a guarantee. Logging your catches in the app helps tune them over time.

Where does the water data come from?

Flow and temperature come straight from USGS gauges. Where a river has no gauge, water temperature is estimated from air temperature and season and flagged as an estimate.

Tomorrow morning

Check the river before you check the coffee.

Pick your river once. Every morning after that, the verdict is one tap away.

Check your river. It's freeBrowse by state