Africa: River Network, 15s resolution, 2007

Description:

This river network (stream lines) map for Africa is derived from the flow direction map for Africa. The flow accumulation map for Africa is used for selection and attribution. Only rivers with upstream drainage areas exceeding a certain threshold are selected: for the 15 arc-second resolution a threshold of 100 upstream cells has been used. The vectorized river reaches are attributed with the maximum flow accumulation (in number of cells) occurring within each river reach. This data is derived from elevation data of the Shuttle Radar Topography Mission (SRTM) at 15 arc-second resolution approx. 500m at the equator. 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. 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

Publisher:

Geological Survey (U.S.)

Provider:

Stanford

Resource Class:

Datasets

Resource Type:

Line data

Subject:

Hydrology, Hydrography, Watersheds, Rivers, Inland Waters, and Elevation

Theme:

Land cover, Inland Waters, and Elevation

Temporal Coverage:

2007

Date Issued:

2007

Spatial Coverage:

Africa

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:

Shapefile

Georeferenced:

More details at:

https://purl.stanford.edu/wf122zm7811