60d99ea9-d604-47ad-8c11-70c80a010833 eng utf8 dataset Myriam Chergui French Geological Survey (BRGM) Orléans 45000 France m.chergui@brgm.fr pointOfContact 2025-12-16 ISO 19115/INSPIRE_TG2/CZ4 2003/cor.1/2006 WGS84 (4326) Redox potential map 2021-06-28 creation HOVER/WP5_Redox_Potential https://www.europe-geology.eu After distinguishing between groundwater containing nitrate and groundwater without nitrate, the first step of the method allows for the classification of groundwater with iron (anoxic) or without iron (oxic). Water types having both iron and nitrate at either low or relatively high concentrations at the same time are classified as 'mixed'. The method can either end here or if needed continue in a second step for mixed samples. The second step considers NH4 and O2 concentrations. After applying the methodology to individual sampling points the results were aggregated to lithological units. The results of these calculations and how the redox potential map was build are described in this report. French Geological Survey (BRGM) Orléans 45000 France l.gourcy@brgm.fr pointOfContact French Geological Survey (BRGM) France l.gourcy@brgm.fr custodian Geology GEMET - INSPIRE themes, version 1.0 2008-06-01 publication HOVER European Geoscience Registry - Projects 2020-01-01 publication Groundwater;nitrate;groundwater processes otherRestrictions no limitations to public access eng geoscientificInformation inlandWaters -21.797 45.703 27.434 64.351 https://maps.europe-geology.eu/?mapname=egdi_geoera_hover#baslay=baseMapGEUS&extent=-5475650,-2533090,13810580,8204920&layers=denitrification_gwb_centroid_countries,denit_countries_label,denitrification_gwb_centroid_label,denitrification_gwb_centroid,denit_countries WWW:LINK EGDI platform information https://data.geus.dk/egdidatasets/hover/hover_brgm_denit.gpkg WWW:DOWNLOAD GeoPackage download COMMISSION REGULATION (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services 2010-12-08 See referenced specification