Western Waters Digital Library: Government Water Resource Links
The Western Waters Digital Library (WWDL) provides free public access to digital collections of significant primary and secondary resources on water in the western United States.
Government Water Web Sites
Water Resources of the United States
http://water.usgs.gov
USGS Water Data for the Nation
http://waterdata.usgs.gov/nwis
National Water Quality Assessment Program
http://water.usgs.gov/nawqa/
US Bureau of Reclamation
http://www.usbr.gov
United States Environmental Protection Agency Water Resources
http://water.epa.gov
National Climatic Data Center
http://www.ncdc.noaa.gov/
National Water and Climate Center
http://www.wcc.nrcs.usda.gov/
US Drought Portal
http://www.drought.gov/drought/
CDC Healthy Water Portal
http://www.cdc.gov/healthywater/
