Hydrogeology — SAQ

The BD LISA (Aquifer System Limits Database) repository currently in circulation is version 2. This repository shall include the following spatial datasets: — Level 3 hydrogeological entities (local); — Elemental polygons delimiting each single battery d' hydrogeological entities; — Karst zones, areas characterised as karst-based or feeding karst sources; — Movable alterite zones, polygons of extension of areas in which the presence of altered movable geological formations (saprolite) has been identified or is assumed. As well as tables d' additional information: — The multi-scale table with n°#x27; all mapped hydrogeological entities (levels 1, 2 and 3) — The genealogy table summarising the changes made between version 1 and version 2 of BDLISA. — The table of batteries d' hydrogeological entities that associate each elemental polygon with the level 3 hydrogeological entities present under this polygon, ordering them vertically. __Partner organisations__ Ash, Bureau of Geological and Mining Research __Links annexes__ * [see the interactive dictionary on Sandre website](http://www.sandre.eaufrance.fr/squelettes/consulter_fiche_dictionnaire.php?dictionnaire=/db/sandre/Schemas/saq/2.1/sandre_fmt_xml_saq.xsd) * [see BDLISA’s delivery description v.2](http://www.sandre.eaufrance.fr/sites/default/files/document-sandre/Descriptif_données_BDLISA2_v3.pdf) * [recover an anomaly or propose a correction on the BDLISA forge](https://forge.eaufrance.fr/BDLISA) [See this page on geo.data.gouv.fr](https://geo.data.gouv.fr/fr/datasets/4a90fff807f4f8a3cc052b0498c6f3da899eeb04)