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Global Groundwater Information System (GGIS)

Global Groundwater Information System (GGIS)

The Global Groundwater Information System (GGIS) is an interactive, web-based portal to groundwater-related information and knowledge. 

The GGIS consists of several modules structured around various themes. Each module has its own map-based viewer with underlying database to allow storing and visualizing geospatial data in a systematic way. The following disclaimer and license are applicable to the GGIS, as well as to all other IGRAC products.  

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Transboundary groundwaters

In the modules below, you can obtain more information about transboundary aquifers (TBA's).

Transboundary Aquifers - Explore all

Explore all - Transboundary Groundwaters

Contains all transboundary aquifers' data.

Transboundary Groundwater data and information

Transboundary Aquifers of the World map

Contains 592 identified TBAs (incl 226 transboundary ‘groundwater bodies'.

Ramotswa Aquifer

Shared between Botswana and South Africa.

Transboundary Aquifers (TWAP Project)

Selection of 199 aquifers and 43 SIDS.

Dinaric Karst (DIKTAS Project)

Shared by Albania, Bosnia and Herzegovina, Croatia and Montenegro.

GGRETA: Governance in Transboundary Aquifers

Project Information Management System (IMS), containing data for case study areas in Central America, Southern Africa and Central Asia.

Stampriet Aquifer Viewer (GGRETA Project)

Stampriet Aquifer (GGRETA Project)

Shared between Botswana, Namibia and South Africa. 

Pretashkent Aquifer Viewer (GGRETA Project)

Pretashkent Aquifer (GGRETA Project)

Shared by Kazakhstan and Uzbekistan.

Transboundary aquifer information sheets

Transboundary aquifer information sheets

Overview containing 199 information sheets on transboundary aquifers.

Global Country Data and Regional Maps

The modules below provide groundwater information on country or regional level. 

Explore all regional and national groundwaters data

Explore all

Contains all regional and national groundwaters data.

Groundwater data on country level

Global Country Data

Groundwater information on country level.


The SADC Groundwater Information Portal (GIP) is a map-based information system.

Groundwater Stress

Groundwater Stress

Global groundwater stress maps, based on GRACE data, global inventories and research.

Groundwater Quality

Groundwater Quality

Global groundwater quality maps on probability and occurrence.

Groundwater Resources in Africa

Quantitative continent-wide maps for Africa.

Groundwater monitoring

The module(s) below give more information about groundwater monitoring. 

GGMN Portal

IGRAC's groundwater monitoring data.

Managed Aquifer Recharge

The module(s) below give more information on Managed Aquifer Recharge (MAR). 

MAR Portal

Global MAR sites and regional MAR suitability maps. 

Small Islands

The modules below give more groundwater-related information on small islands (SIDS). 

Small Island Developing States (TWAP)

Contains data on 43 SIDS from TWAP project. 

SIDS information sheets

SIDS information sheets

Overview containing 43 information sheets on Small Island Developing States.


Below you can find all modules that are not directly related to one of the categories above.

All available GGIS manuals


All available GGIS manuals.

Meta Information Module

Meta Information Module

Uploading, storing and searching additional information.