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Geoindex - Hydrogeological Mapping

The Geoindex Hydrogeological Cartography viewer allows the consultation of continuous hydrogeological cartography at different scales

The Map of Hydrogeological Areas of Catalonia 1: 250,000 (MAH250M v1.0, 2017) is a tool for representing and disseminating the hydrogeological characteristics of the territory and the subsoil. It is a 1: 250,000 scale synthesis of the hydrogeological macrunities into which the territory can be divided, called hydrogeological areas, and includes the classification of the geological formations of the Geological Map of Catalonia 1: 250,000 in hydrogeological formations taking into account their lithological characteristics. .

The first edition of this map was published in 1992 by the Geological Survey of Catalonia (Department of Territorial Policy and Public Works). 24 years later, the review and updating of the MAH250M aims to remain a benchmark that facilitates the synthesis and exposure of the hydrogeological context of an area, in regional studies and feasibility and planning studies. This update has been carried out by the ICGC with the collaboration of the Catalan Water Agency (ACA).

Hydrogeological Mapping continues at a scale of 1: 25.000 is a set of geothematic information related to the quantitative and qualitative characteristics of groundwater, the medium that contains it and the associated hydrogeological elements such as wells, piezometers, springs and water mines.

It represents a homogenization of a part of the original information collected and published in sheets and in paper format between the years 2010 and 2017 (Geowork V) to which additional hydrogeological information is incorporated based on the new digital geological cartography 1: 25.000 (ICGC, 2021). The published data are collected in the new relational and spatial database of the Information System of the Hydrogeological Map of Catalonia (BDSIMHCat) implemented in the PostgreSQL database management system and the PostGIS module.


Legend of the Hydrogeological Cartography Geoindex viewer [PDF, 1 MB; catalan]

Last update

  • Date: December 2021
  • Content: The following 1: 25,000 continuous digital hydrogeological cartography information sets are added: water points (1313 springs and 4750 wells) and physicochemical parameters, piezometries and flow lines, continuous hydrogeological mapping of hydrogeological units, continuous hydrogeological mapping of aquifers

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