This Fact Sheet is one in a series that highlights information or recent research findings from the USGS National Streamflow Information Program (NSIP). The investigations and scientific results reported in this series require a nationally consistent streamgaging network with stable long-term monitoring sites and a rigorous program of data quality assurance, management, archiving, and synthesis. NSIP produces multi-purpose, unbiased surface water information that is readily accessible to all.
Additional publication details
USGS Numbered Series
Streamflow trends in the United States...from the National Streamflow Information Program
U.S. Geological Survey
U.S. Geological Survey, Illinois Water Science Center