This article was just published today in the Los Angeles Times:
http://www.latimes.com/world/asia/la-fg-india-water-20160505-story.html
There is a direct correlation between deforestation and desertification. India has cut down their trees, and now the rivers run dry, wells are drying up, and watersheds no longer function to hydrate the aquifers and the villages that depend upon them for water.
The solution is simple but will take years to bear fruit: you have to reforest these watersheds and rehydrate the land through massive reforestation.
Sadly, this is happening all over the world, and yet governments are doing little to stop the massive destruction of forests, and even less to reforest places that once were moisture sinks. And then when the water all dries up, the "solution" is big tanker-trucks hauling water. Stupid.
On a local level, watershed by watershed, we need people to take responsibility to reforest their land, maintain those trees, and put into place water capturing earthworks. The problem was created as tree-by-tree, billions of trees were removed and burned for new farm land or to make charcoal. The solution will be crafted tree-by-tree, until billions of trees are re-introduced.
The best organization that I know that is doing this is Plant With Purpose, out of San Diego. May their tribe increase.
https://www.plantwithpurpose.org/plant-trees/