1. Home
  2. Organizations
  3. UNESCO-Water Information...
  4. Groundwater productivity in Africa

Groundwater productivity in Africa

This 5 km resolution grid indicates what borehole yields (in l/s) can reasonably be expected in different hydrogeological units. The ranges indicate the approximate interquartile range of the yield of boreholes that have been sited and drilled using appropriate techniques. Groundwater productivity is given in liters per second.

Detailed description of the methodology, and a full list of data sources used to develop the layer can be found in the peer-reviewed paper available here: http://iopscience.iop.org/article/10.1088/1748-9326/7/2/024009/pdf

The raster and a high resolution PDF file are available for download on the website of British Geological Survey (BGS): http://www.bgs.ac.uk/research/groundwater/international/africanGroundwater/mapsDownload.html

Data and Resources

Additional Info

Field Value
Last Updated June 27, 2019, 11:50 (EDT)
Created June 27, 2019, 11:50 (EDT)
GUID 191aed16-26db-11e8-a93b-005056062634
access_constraints ["UNESCO-IHP was given the authorization to display on IHP-WINS some materials produced by the British Geological Survey.\n\nPermit Number CP17/019 British Geological Survey \u00a9 NERC 2017. All rights\nreserved."]
bbox-east-long 51.23905029
bbox-north-lat 37.27619178
bbox-south-lat -34.82380822
bbox-west-long -17.41094971
contact-email archambault.gabin@hotmail.fr
coupled-resource []
dataset-reference-date [{"type": "publication", "value": "2017-07-19T15:52:00Z"}]
frequency-of-update
graphic-preview-description Thumbnail for 'Groundwater productivity in Africa'
graphic-preview-file http://ihp-wins.unesco.org/uploaded/thumbs/layer-191aed16-26db-11e8-a93b-005056062634-thumb.png
graphic-preview-type image/png
licence []
metadata-date 2018-07-05T18:25:58Z
metadata-language
progress completed
resource-type dataset
responsible-party [{"name": "UNESCO", "roles": ["originator"]}]
spatial {"type": "Polygon", "coordinates": [[[-17.41094971, -34.82380822], [51.23905029, -34.82380822], [51.23905029, 37.27619178], [-17.41094971, 37.27619178], [-17.41094971, -34.82380822]]]}
spatial-data-service-type
spatial-reference-system 4326
spatial_harvester true
temporal-extent-begin 2010-01-01T00:00:00+01:00
temporal-extent-end 2010-12-31T01:00:00+01:00