You might want to try the ...

You might want to try the farmers way.  Not many try to plant 750 seeds in one spot. But they do plant one seed at a time (man or machine) and allow nature to take its course. 1. recycle all trash/garbage. 2. make and use compost. 3. make and use compost teas. 4. use compost and teas to build healthy soils "that hold moisture". 5. plant, grow, eat, sell produce to make money. 6. use money to make or purchase rain water collection barrels. 7. build individual home cisterns. 8. later build community cistern for long term storage.(calculate total usage for at least 2 years and build to suit. 9.  Later make or purchase quality roof materials for better collection of rain water. Your goal is to communicate and teach tribalistic people how to live with nature. If you are looking for a short cut. Find the leader and with your funding do the entire process for self sustainability. They will all see and do the same out of respect for their leader. Your group can do the monitoring. Even go out and find buyers for their produce surplus. Select the most qualified and train him well.  He will become village monitor and contact for your organization.