The ENIGMA network works closely with other networks, notably working on long-term experimental infrastructures. Datasets produced during experiments will be inserted onto the network databases.
The H+ network is the French long-term observation system for hydrogeological research and was created in 2002. It hosts international teams developing novel subsurface monitoring and imaging techniques, such as the ENIGMA ITN project. H+ experimental site in Ploeumeur hosted the ENIGMA second workshop in October 2017.
Established in 2008, TERENO is a German long-term research program on consequences of global change for terrestrial ecosystems and its socioeconomic implications.
ENIGMA ESR are working on several TERENO-linked experimental sites.
HOBE is the Danish hydrological observatory, established in 2007. It is working a an interdisciplinary research programme, with a strong training activity.
ENIGMA ESR are working on several HOBE sites.