Contact
A gauge request, a reading that looks wrong, a river you want to sponsor — all fine.
Request a gauge
riverlvl covers 246 of roughly 11,000 USGS gauges. Adding one is a two-minute job.
Report an error
Tell me which page and what looks wrong. Readings come straight from USGS and NWS and are provisional — if the gauge itself is wrong the fix is upstream, but riverlvl can flag or drop it.
Sponsor a river
One exclusive sponsor per river — see sponsoring.
Where the data comes from
Streamflow, gage height and seasonal medians are public-domain data from the U.S. Geological Survey. Flood categories, impact statements, crests and forecasts come from the NWS National Water Prediction Service.
riverlvl is not an official source. The summaries are generated by rule from those published numbers — not forecasts, not warnings, not safety assessments. For official forecasts and flood warnings use water.noaa.gov and weather.gov.