When trying to locate water in a dry desert look around to see if there are any disingenuous trees since these trees are usually near lakes and falls. Once you have located one find a low spot or a damp area near the tree. Using a stick or another tool available dig a hole into the area until you find water. Make sure to keep the edges of the hole your digging nice and round so that the hole won't fall in on it self. When you've found water it should flow into the hole. The water is usable so let it sit for a couple minutes then purify.