Other Sites
- Euro-Mediterranean Information System (also in French)
- European Water Association
- A Guide to World Resources 2002-2004 - World Resources Institute
- Hydrology Web
- International Association of Hydrogeologists
- International Water Association
- International Union for the Conservation of Nature (IUCN)
- Land and Water Development Division (UN Food and Agriculture Organization)
- Our Great Lakes
- United States Geological Survey
- Water and Nature Initiative of the World Conservation Union
- Water Conserve - Water Conservation Portal of Ecological Internet
- The World's Water - Pacific Institute for Studies in Development, Environment, and Security
- WWF