The National Map, hydrography.

Bibliographic Details
Corporate Author:	Geological Survey (U.S.). National Geospatial Program Office
Format:	Government Document eBook
Language:	English
Published:	[Reston, Va.] : U.S. Dept. of the Interior, U.S. Geological Survey, [2009]
Series:	Fact sheet (Geological Survey (U.S.)) ; 2009-3054.
Subjects:	Hydrography > United States > Data processing. Hydrology > United States > Data processing. United States > Maps, Topographic > Databases.
Online Access:	https://purl.fdlp.gov/GPO/LPS114835

Description
Item Description:	Title from title screen (viewed on July 15, 2009). At head of title: National Geospatial Program Office. "July 2009." Electronic resource.
Physical Description:	4 unnumbered pages : digital, PDF file.
Format:	Mode of access: Internet from the USGS web site. Address as of 7/15/09: http://pubs.usgs.gov/fs/2009/3054/pdf/FS2009-3054.pdf ; current access available via PURL.