RiverFinn
Fly fishing conditions, honestly
Know where to fish before you go.
Live river measurements, weather, closures and regulations for the stretches you fish — read for you by Finn, so the drive is worth it.
Plan it with Finn
Yes, on what I can see. Flow is 207 CFS and steady — the range brown trout prefer on this reach.
There's no thermometer on this stretch, so I can't speak to water temperature.
Saturday's forecast is sunny with wind under 10 mph, and there's no closure or advisory. I'd be there early.
Ask Finn
Ask about a river. Get an answer from the data.
Finn reads today's gauge, the forecast, any closure and the rules for the stretch, then answers in plain words. When something isn't measured, Finn says so instead of guessing.
Meet Finn →Closures & advisories
Closed says closed. Everywhere.
Mandatory closures and voluntary advisories from the state agency sit on the map, on the card and on the river page — ahead of any score, however good the numbers look.
Alerts
Alerts for the rivers you save.
A new closure, a temperature you set, a flow that's moving, a weekend outlook — as a notification on your phone, always free.
Trip planning
Tell Finn the day. Get the trip.
RiverFinn picks the water and the hours, keeps the plan on your calendar beside your own events, and tells you when conditions move before you leave.
Data & transparency
Every number has a source, a time and a link.
USGS and Colorado DWR gauges, the National Weather Service, and state wildlife agencies — with the time they observed it and the time RiverFinn last checked. No thermometer on the reach? It says so.
How RiverFinn handles data →And the rest
Built around the day, not the dashboard.
One read of flow, trend, temperature and wind against the reach's species — only when enough is measured.
Rivers near you, ranked by what is measured; the ones you save drive your weekend outlook.
One tap to the access point in your maps app. Steelhead and salmon reaches carry their run windows.
Supported waters
52 sections across 5 states.
The river,
before the drive.
Free to start, with two full waters in every supported state. RiverFinn Pro opens the rest.