Title

Depth to groundwater in Africa

+ The original author did not specify a license.

Abstract

Depth to groundwater, in meters below ground level, was modelled using an empirical rules-based approach, where depth to groundwater was assigned according to rainfall and aquifer type, as well as proximity to rivers.

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

Pubblication Date

Oct. 31, 2017, 4:32 p.m.

Type

Raster Data

Keywords

Groundwater , Stress

Category

Groundwater

Groundwater is the water present beneath Earth's surface in soil pore spaces and in the fractures of rock formations. It represents 98% of the world’s unfrozen freshwater.

Regions

Global , Africa

Responsible

gabin.archambault

Group

Theme 2: Groundwater

Restrictions

UNESCO-IHP was given the authorization to display on IHP-WINS some materials produced by the British Geological Survey. Permit Number CP17/019 British Geological Survey © NERC 2017. All rights reserved.

Edition

MacDonald, A M, Bonsor, H C, Ó Dochartaigh, B E, Taylor, R G. (2012). Quantitative maps of groundwater resources in Africa. Environmental Research Letters 7, 024009

Language

English

Temporal Extent

Dec. 31, 2009, 11 p.m. - Dec. 31, 2010, midnight

Supplemental Information

This layer is part of a series of quantitative maps produced by the BGS. They are the first quantitative maps produced for Africa and are underpinned by dedicated case studies and systematic data/literature reviews. They are designed to show information at the continental, or regional scale (nominally at 1:20M).

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