- Danish hydrology research initiative HOBE
(www.hobecenter.dk )
- Danish Geological Society
(http://www.2dgf.dk/)
- Nordic Association for Hydrology
(http://www.vannetinorden.com/)
- ATV Foundation for Soil and Groundwater
(www.atv-jord-grundvand.dk/)
- Danish Water Forum
(http://www.danishwaterforum.dk/)
- IAHS Danish National Chapter for International Association for Hydrological Sciences
(http://iahs.info/)
- FIVA, International Research School of Water Resources
(http://www.fiva.dk/)
- IAH – International Association of Hydrogeologists
(www.iah.org)
- IAH Burdon Groundwater Network
(http://burdon.wwgw.org/)
- IGRAC
(http://www.igrac.net/)
- EuroGeoSurveys
(http://www.eurogeosurveys.org/)