11,680
Active stations
Live data from 11,680+ stations
Monitor water levels
in real-time
Streamflow data, gauge heights, and temperature readings for streams, rivers, lakes, and reservoirs across the United States.
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Live Network
Monitoring the nation's waterways
Real-time data collected from USGS monitoring stations across all 50 states.
Popular
Well-known waterways
Major measuring points for streams, rivers, lakes, and reservoirs across the United States.
Colorado River
Major gauges along the Colorado and its lower basin.
Mississippi Basin
Key Mississippi River measuring points from Midwest to the Gulf.
Great Lakes
Connecting-channel and shoreline stations around the lakes.
Pacific Northwest
Columbia, Willamette, and Snake River reference gauges.