Global GIS : Drainage Basins

Description:

This datalayer is a polygon coverage representing hydrologic drainage basins located worldwide. The data displayed here is derived from the HYDRO 1K Elevation Derivative Database. The drainage basins distributed with the HYDRO1k data set suite are derived using the vector stream networks along with the flow direction data set. Each polygon in the basin data set has been tagged with a Pfafstetter code uniquely identifying each sub-basin. HYDRO1k, developed at the U.S. Geological Survey's (USGS) EROS Data Center, is a geographic database providing comprehensive and consistent global coverage of topographically derived data sets. Developed from the USGS' recently released 30 arc-second digital elevation model (DEM) of the world (GTOPO30), HYDRO1k provides a standard suite of geo-referenced data sets (at a resolution of 1 km) that will be of value for all users who need to organize, evaluate, or process hydrologic information on a continental scale.

Creator:

EROS Data Center, Geological Survey (U.S), American Geological Institute, and Environmental Systems Research Institute (Redlands, Calif.)

Publisher:

American Geological Institute

Provider:

Harvard

Collection:

Global GIS : global coverage and U.S. Geological Survey digital data series

Resource Class:

Datasets

Resource Type:

Polygon data

Subject:

Hydrology, Watersheds, Drainage, Altitudes, inlandWaters, and elevation

Temporal Coverage:

2003

Date Issued:

2003

Spatial Coverage:

Earth, Northern Hemisphere, Southern Hemisphere, Eastern Hemisphere, Western Hemisphere, Africa, Asia, Australia, Europe, North America, and South America

Access Rights:

Public

Format:

Shapefile