Starter $9/mo · 10 watches · every 15 min. Plus $19/mo · 40 watches · every 5 min. We email a confirmation link first; webhooks confirm at checkout.
California river gauges
Latest USGS readings. Open a gauge for both discharge and gage height.
- American River at Fair Oaks, CA 1170 cfs (provisional) ·
- East Walker River near Bridgeport, CA 21.4 cfs (provisional) ·
- Klamath River below Iron Gate Dam, CA 998 cfs (provisional) ·
- Sacramento River at Keswick, CA 4980 cfs (provisional) ·
- Trinity River at Lewiston, CA 310 cfs (provisional) ·
- Truckee River at Farad, CA 406 cfs (provisional) ·
We email once when a fresh USGS reading crosses your line. If it's already past the line, we wait for it to come back and cross. After an alert we stay quiet until the reading moves back past the line by a small margin. Ice, missing, seasonal, or 6-hour-old readings don't count. Provisional readings are labeled in the email.
New to flow numbers? Fly Fishing for Nerds on reading river flows and water temperature for trout.