Lake Hughes is a possible resupply road, but post office or stores are far and traffic can be spotty for hitchhiking on weekdays. Still, road crossings are crucial for resupply or emergency, and Lake Hughes has some limited services, a church, and locals or campers traveling on this road that connects to the freeway, who can help. Most PCT through hikers are doing the desert southern sections of California very early in the year, when most seasonal springs still have water. In dry years or later in summer some sections can be long without water, so friends or trail angels stock drinking water in such caches. Leave it there untouched unless in an emergency.