NOTICE: In January 2020, USGS WaterWatch began operating in maintenance-only mode. Existing tools, features, and web data services are being fully maintained as before, but new tools and enhancements will no longer be developed. Please contact USGS WaterWatch if you have any questions.
WaterWatch -- Maps and graphs of current water resources conditions

USGS Streamgage Statistics

Enter USGS streamgage site information such as a site number, a river name, or a county name, choose streamflow type, and then click “GO” to retrieve streamflow statistics and flow duration curve.

Explanatory Note: The “streamgage statistics” retrieval tool provides a table of basic summary statistics for the selected streamgage, as computed from daily values, for the period of record. Statistics will be retrieved by entering an 8-digit streamgage site number, or the first several digits of a site number if the full number is not known. In the latter case, the statistics for all stations having the same first several digits will be displayed. In addition, the retrieval tool will provide statistics for all sites on a river by entering the river name (e.g., Mississippi), or in a county by entering the county name (e.g., Los Angeles), or in a state by entering a two-letter State abbreviation (e.g., NY). An explanation of each variable in the table can be obtained here.

Statistics from historical daily streamflow data for all currently operating streamgages are also available to download.