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.

Percentile values are shown to the right of the graph and exceedance probability values are on the x-axis. These terms are defined on the percentile description page.
Duration curves
No. of
06934500Missouri River at Hermann, MO52250066