USGS Surface Water Information
| New & Noteworthy
 
 Today's Water ConditionsView maps of current and historical conditions  Streamflow  Flood and high flow  Drought  Groundwater levels  Surface water quality USGS in Your StateUSGS Water Science Centers are located in each state. ![[Map: There is a USGS Water Science Center office in each State.]](http://www.usgs.gov/frameworkfiles/includes/imagemaps/usmapsmall.gif)  Other Water SitesPDF Reader!Documents are presented in Portable Document Format (PDF); the latest version of Adobe Reader or similar software is required to view it. Download the latest version of Adobe Reader, free of charge. | The National Flood Frequency (NFF) ProgramNOTE: The computer program National Flood Frequency Program (NFF) has been replaced by the National Streamflow Statistics (NSS) program and as such does not contain the most current flood frequency regional equations. |