Most water problems could be solved by restoring watersheds.
http://www.harvestingrainwater.com/
rainwater harvesting videos with Brad Lancaster: http://www.youtube.com/watch?v=2iQ-FBAmvBw
Many dry regions have been made much worse, with much lower carrying capacity, because of damage to watersheds over the past 100- 10,000 + years.
See also "Water for Every Farm" by PA Yeomans.









