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Current USGS Streamgage Map

Historical Streamflow Data

Real-time Streamflow Data

Water Watch

Need more information about USGS Streamgaging Program? Contact the USGS Office of Surface Water at (703)648-5301.

What has been happening to the number of streamgages in recent years?

Active streamgages includes USGS long-term (network) and short-term (study) continuous discharge stations. Active streamgages with telemetry includes all types of telemetry install in USGS continuous discharge stations. The telemetry can be owned by other agencies. Furnished-record, stage-only, and lake stations are not included in either of the counts. Telemetry is any system for sending data rapidly from streamgages to USGS offices and includes satellite data-collection platform, telephone, cellular telephone, and radio