sci.geo.rivers+lakes - join
Science of rivers and lakes.
Low activity, 33 subscribers, Usenet

Groundwater Assessment and Modelling - join
This group aims to provide a forum for discussion of scientific research in all aspects of ground water assessment and modelling. Exchange of ideas and experiences regarding use and application of groundwater softwares are also welcome.
Low activity, 84 members, moderated

Water Resources - join
A discussion group on water resources development and management.
Low activity, 81 members, moderated