posted 5 years ago
How much water is needed?
Your profile mentions an average of 23" of rain per year.
That's about 14.5 gallons of water a year, from every square foot of collecting surface.
How cheap can collecting surface be?
It could be as simple as tarp laid on the ground, held down by rocks.
Not a good long term solution, but you get the idea.
Storage is another cost.
Ponds could be the cheapest solution there, and they double as collecting surface, but also allow for evaporation.
Depending on what they use to chlorinate the water, exposure to sun can remove a lot it,so I would probably get the pasture hook up use it to irrigate trees and other perennials.
I might fill microponds with the irrigation water, and grow food on floating rafts, or grow azolla and duckweed.
This would buy time to work on rainwater collection infrastructure, and be a back up during dry times.