I camped in La Posa South area which is one of several areas for long term camping on BLM land near Quartzsite, AZ. You can buy a permit to camp in any of the areas for the season which I believe starts in November and ends in April. They also offer permits for two week intervals if you are not planning on camping all season. It is dry camping although there is a dump station and water available along with a row of dumpsters in each area for trash. This place fills up in the winter but there are still plenty of areas to find a good camping spot. If you do camp farther out watch out for traffic from ATV's and four wheelers who don't seem to believe the speed limits apply to them.