@article {13501,
	title = {USGS Water Data for the Nation},
	number = {22 Oct 2007},
	year = {2012},
	note = {User-friendly site with extensive links to data for sites. Current surface-water, groundwater and water quality data are featured.},
	keywords = {hydrology, water quality data},
	url = {https://waterdata.usgs.gov/nwis/},
	author = {U.S. Dept. of the Interior.U.S. Geological Survey,}
}
