Oasis Areas Oasis areas can be supplied with water from the ocean areas, and with a proper design can be used to sun distill salt water into fresh water. One pond would house the salt water, a second pond the distilled fresh water. The salt water pond would be contained in a plastic framed housing so that the evaporation of the water would condense on the inside surface of the plastic, and then drain to the fresh water pond. This can be a fully automatic system with float valves and depth sensors. During Monsoon rains the outside of the tenting can be used to collect the pure rain water and move it to the fresh water pond. If there are streams nearby, the stream water can be filtered via sand filters and thus used for fresh water. These oasis can will supply water for both domestic and wild animals that roam the BorderTransportationSystem area. Index of ... A System for Pond Water Purification How To Turn Salt Water Into Drinking Water Outdoor Survival/Water   . E-books You can order an Amazon.com version of this write-up in Kindle form using the title "Border Security Solved with High Speed Rail"  or "Generating Jobs Using Existing Solutions"  ASIN:  B07627HWG2  Other e-books by this author