• Explore the NEW USGS National Water Dashboard interactive map to access real-time water data from over 13,500 stations nationwide.

Boating safety tips are available from the U.S. Coast Guard.

NOTE: Station Numbers for Iowa precipitation gages have changed (see list).

• Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
• For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
• For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
• For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
• Not all sites have reports available for every water year.