Rajendra Singh is known as "the waterman of India".  For the last 35 years, his organization Tarun Bharat Sangh, has worked with with 1000+ villages across India, restoring water for more than a million people.  This work has restored the local climate, reduced temperature, brought back rainfall, and created a reverse migration...where refugees have returned to their homeland after decades of drought.  For his work, Rajendra was awarded the Stockholm Water Prize.