Drainage Basins

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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. A detailed description of the coding scheme can be found in Verdin. Additional attributes defining the characteristics of each sub-basin have been developed. These are described in the Readmefile. These data are available in an ARC/INFO exportformat and in shapefile format.

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Download HYDRO1k Basins data set for South America as a tar file in ARC/INFO export format (2.8 MB)
Download HYDRO1k Basins data set for South America as a tar file in shapefile format (2.8 MB)
Download entire HYDRO1k data set for South America as a tar file (124.2 MB)

For further assistance, please contact: Customer Services U.S. Geological Survey Center for Earth Resources Observation and Science (EROS) 47914 252nd Street Sioux Falls, SD 57198-0001 Tel: 800-252-4547 Tel: 605-594-6151 Fax: 605-594-6589 Email: custserv@usgs.gov Business Hours: Monday thru Friday, 8:00 a.m. to 4:00 p.m., central time

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U.S. Department of the Interior | U.S. Geological Survey URL: http://eros.usgs.gov/ Page Contact Information: custserv@usgs.gov Page Last Modified: August 22, 2006

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