USGS EROS Archive - Digital Elevation - HYDRO1K

Science Center Objects

A global hydrologic database derived from 1996 GTOPO30 data.

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HYDRO1k is a geographic database developed to provide comprehensive and consistent global coverage of topographically derived data sets, including streams, drainage basins and ancillary layers derived from the USGS' 30 arc-second digital elevation model of the world (GTOPO30). HYDRO1k provides a suite of geo-referenced data sets, both raster and vector, which will be of value for all users who need to organize, evaluate, or process hydrologic information on a continental scale.

Developed at the U.S. Geological Survey's EROS Center, the HYDRO1k project's goal is to provide to users, on a continent by continent basis, hydrologically correct DEMs along with ancillary data sets for use in continental and regional scale modeling and analyses. Detailed descriptions of the processing steps involved in development of the HYDRO1k data sets can be found in the Readme file.

This work was conducted by the U.S. Geological Survey in cooperation with UNEP/GRID Sioux Falls. Additional funding was provided by the Brazilian Water Resources Secretariat and the Food and Agriculture Organization/Inland Water Resources and Aquaculture Service.

Coverage Maps

Coverage Maps indicating the availability of HYDRO1k products are available for download.

Additional Information

Access Data

EarthExplorer can be used to search, preview, and download HYDRO1K. The collection are located under the Digital Elevation category.