Meeting report available: Isotopes and tracers in hydrology

Isotopes and tracers offer powerful options for the enhancement of knowledge about water systems, especially in the case of water resourcesmodelling. As costs for analyses are decreasing, more opportunities foranalyses become readily available. These are some of the conclusions ofthe international symposium, Isotopes and tracers in hydrology & Henry Darcy Lecture 2009, which took place on 5 November 2009 in Amsterdam, the Netherlands. The symposium was organized by the Netherlands IHP Committee and VU University Amsterdam in conjunction with the Netherlands Hydrological Society, the Netherlands Chapter of IAH and the US National Ground Water Research and Educational Foundation.