Just a note in Mexico. It can be divided two parts with different water problems. In central and southern Mexico, there is abundance of rain, and it is more pop

Just a note in Mexico. It can be divided two parts with different water problems. In central and southern Mexico, there is abundance of rain, and it is more populated. The main problem is managing the rain. Northern Mexico is like the American Southwest, sparsely populated, great extensions of land and very little rain.