Title

Groundwater salinity across the Indo-Gangetic basin

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Abstract

This 1 km resolution grid shows salinity measured as total dissolved solids (TDS, in mg/l) in the groundwater across the Indo-Gangetic basin.

Methodology and a full list of data sources used can be found in the peer-reviewed paper: https://www.nature.com/articles/ngeo2791.epdf?author_access_token=_2Z_fJZxRkSVmgVJ7xHTVdRgN0jAjWel9jnR3ZoTv0O07GfIlzqIVm44UgFPb1r62_FUJLao4zkJSzYpv-4gIWJorRXEpgh4iarB8vlRNY_tGV_18CAf2j-_GnADYbdp

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/SEAsiaGroundwater/mapsDownload.html

Pubblication Date

Aug. 2, 2017, 1:46 p.m.

Type

Raster Data

Keywords

Groundwater , Quality

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

Asia , South Asia , Bangladesh , Bhutan , India , Nepal , Pakistan

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, et al. 2016. Groundwater quality and depletion in the Indo-Gangetic Basin mapped from in situ observations. Nature Geoscience, doi:10.1038/ngeo2791

Language

English

Temporal Extent

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

Supplemental Information

The maps produced by the BGS provide new, higher-resolution information of the Indo-Gangetic alluvial aquifer, at transboundary scale. They are based on a major systemic review of the best available in situ observations and studies across the aquifer, and are designed to show information at basin or regional scale.

Groundwater with salinity greater than 1 mg/l accounts for 23% of the volume of groundwater (28% of aquifer area).

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