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.
Texas river gauges
Latest USGS readings. Open a gauge for both discharge and gage height.
- Guadalupe River at Sattler, TX 103 cfs (provisional) ·
- Llano River at Llano, TX 396 cfs (provisional) ·
- San Marcos River at San Marcos, TX 88 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.