Datasets > Digital elevation models, Raster data > Africa > 2005-2009

Africa: Void-filled digital elevation model at 30s resolution, 2007

U.S. Geological Survey · 2007 Full Details

Full Details

Title
Africa: Void-filled digital elevation model at 30s resolution, 2007
Description
This raster layer is a void-filled digital elevation model (DEM) of Africa at 30 arc-seconds resolution. Elevations is in meters referenced to the WGS84 EGM96 geoid. The primary data source of HydroSHEDS is the digital elevation model of the Shuttle Radar Topography Mission. SRTM elevation data were obtained by a specially modified radar system that flew onboard the Space Shuttle Endeavor during an 11-day mission in February of 2000. Regions of no-data (voids), specifically mountainous regions, or those over large water bodies prevented the production of reliable elevation data. The existence of no-data in the DEM causes significant problems for deriving hydrological products, which require continuous flow surfaces. Therefore, a void-filling procedure has been applied to provide a continuous DEM for HydroSHEDS., The goal of developing HydroSHEDS was to generate key data layers to support regional and global watershed analyses, hydrological modeling, and freshwater conservation planning at a quality, resolution and extent that had previously been unachievable., Users may apply HydroSHEDS for non-commercial purposes. We kindly ask users to cite HydroSHEDS in any published material produced using this data. Any modification of the original data by users must be noted. The authors of HydroSHEDS may request reprints of publications and copies of derived materials. The user shall not reproduce, convert, (re)publish, (re)distribute, (re)broadcast, (re)transmit, sell, rent, lease, sublicense, lend, assign, time-share, or transfer, in whole or in part, or provide unlicensed third parties access to the data and related materials without explicit written permission from the authors. For more details see HydroSHEDS Technical Documentation., This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.
Creator
World Wildlife Fund (WWF)
Publisher
U.S. Geological Survey
Subject
Digital elevation models, Elevation, Imagery and Base Maps
Temporal Coverage
2007
Date Issued
2007
Rights
Users may apply HydroSHEDS for non-commercial purposes. Any modification of the original data by users must be noted. The authors of HydroSHEDS may request reprints of publications and copies of derived materials. The user shall not reproduce, convert, (re)publish, (re)distribute, (re)broadcast, (re)transmit, sell, rent, lease, sublicense, lend, assign, time-share, or transfer, in whole or in part, or provide unlicensed third parties access to the data and related materials without explicit written permission from the authors. We kindly ask users to cite HydroSHEDS in any published material produced using this data. If possible, please provide online links to http://www.worldwildlife.org/hydrosheds for general information, and/or http://hydrosheds.cr.usgs.gov for data download and technical information.
Rights Holder
HydroSHEDS has been generated through the extensive use and incorporation of data products provided by various other authors. The data and related materials may thus contain proprietary and confidential property of these authors and/or their licensor(s). HydroSHEDS data and related materials are protected by United States copyright or sui generis laws and applicable international copyright treaties and/or conventions.
License
https://creativecommons.org/licenses/by-nc/3.0/legalcode
Access Rights
Public
Format
ArcGRID
Language
English
Date Added
October 01, 2025

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Cite and Reference

  • Citation
    World Wildlife Fund (WWF) (2007). Africa: Void-filled digital elevation model at 30s resolution, 2007. U.S. Geological Survey. (dataset)
  • BTAA Geoportal Link

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