Reporting Water Framework Directive 2010: GIS files of groundwater bodies per DCE basin in WISE format

A body of groundwater is a separate volume of groundwater within one or more aquifers, constituting the basic delineation of aquatic environments intended to be the unit of assessment for the WFD.
Groundwater bodies are derived from work done on the BDRHF v1 repository.
The water bodies are divided according to the following main principles:
- Water bodies are delimited on the basis of geological and hydrogeological criteria,
- Redistribution of water bodies to take account of the effects of anthropogenic pressures must remain limited,
- The boundaries of water bodies must be stable and sustainable,
- Like surface water bodies, the delimitation of groundwater bodies is organized on the basis of a typology. This typology is largely inspired by that developed for hydrogeological entities defined in the context of the revision of the HFR DB. It is based on the geological nature and hydrodynamic behavior or "large" operation of aquifer systems (nature, flow velocity). It includes 2 levels of characteristics (main and secondary).
- Water bodies can have exchanges between them,
- All water withdrawals for drinking water supplying more than 10m3/day or used to supply water to more than 50 people must be included in a body of water,
- Deep groundwater, unrelated to watercourses and surface ecosystems, from which no abstraction takes place and which is not likely to be used for drinking water because of its quality (salinity, temperature, etc.), or for technical and economic reasons (disproportionate cost of abstraction) may not constitute water bodies.
- Given its size, a body of water may exhibit a certain spatial heterogeneity both in terms of its hydrogeological characteristics and its qualitative and quantitative status.
- At any point several bodies of water may overlap.
(source: according to BRGM, IMPLEMENTATION OF THE WFD: IDENTIFICATION AND DELIMITATION OF SOUTHWATER MASSES - methodological guide, January 2003)
WFD reporting correspondence: This entity corresponds to WISE's Ground Water Body (GWBODY) concept.