Stream Gauges & Water Levels
Real-time water data for river crossings and flood risk
Water levels affect trail access, river crossing safety, and flood risk. USGS operates thousands of stream gauges across the US that provide real-time readings. Check these before any trip that involves river crossings or routes near waterways.
- USGS Water Data Web — real-time stream gauge data for rivers and creeks across the US. Critical for planning river crossings and assessing flood risk.
- USGS Water Resources Mapper Web — interactive map of USGS stream gauge locations with current readings.