Africa has been using sand dams and India, Johad's for this. You just slow the water down and save it in the ground. This is fine for small scale farmers and c

Africa has been using sand dams and India, Johad's for this. You just slow the water down and save it in the ground. This is fine for small scale farmers and communities and seems to work. On a larger scale - Managed Aquifer Recharge (MAR) map (It includes a lot of models but also active sites) https://ggis.un-igrac.org/view/marportal https://ggis.un-igrac.org/view/marportal This article is poor. Talking about Lima was silly and it as usual avoids the actual reason water is scarce, high populations with high use techniques. And where's the pictures, a big part of the amunas is they look awesome, like England and their stone walls lets not pretend it's the most efficient way of doing it. They look cool. That's a important part of communities.