As the saying goes "Water is life."
I think the sustainable management of water is a critical imperative. Indeed, there is a very strong interrelationship between the natural resources: forests, soils and water availability. It is obvious that modeling and mapping watersheds will help understanding of the ecological interrelationships, the phenomenon of flooding, erosion, land cover, land use, climate change, etc.
Are current models robust enough? Are the parameters used in hydrologic models in Central Africa fairly representative? Should work across large watersheds or sub- watersheds?
So to all those questions that should find answers. It is a real challenge.
-- mis à jour Sept. 19, 2011 --