National Hydrography Dataset.

Presents information on the National Hydrography Dataset (NHD), a set of digital spatial data that contains information about surface water features such as lakes, ponds, streams, rivers, springs, and wells. Includes tutorials and an application demo.

Bibliographic Details
Corporate Author:	Geological Survey (U.S.)
Format:	Government Document Map Sensor Image Reference Material
Language:	English
Published:	[Reston, Va.] : U.S. Dept. of the Interior, U.S. Geological Survey, 2004-
Subjects:	Geological Survey (U.S.) Hydrology > Databases. Water resources development > Maps.
Online Access:	https://purl.fdlp.gov/GPO/LPS90119

Description
Summary:	Presents information on the National Hydrography Dataset (NHD), a set of digital spatial data that contains information about surface water features such as lakes, ponds, streams, rivers, springs, and wells. Includes tutorials and an application demo.
Published:	Began in 2004.
Item Description:	Title from home page last updated June 14, 2007 (viewed on April 3, 2008). Electronic resource.
Physical Description:	electronic maps : HTML file.
Publication Frequency:	Updated irregularly, 2008-
Format:	Mode of access: Internet from the USGS web site. Address as of 4/3/08: http://nhd.usgs.gov/ ; current access via PURL.