The Sand Flats Recreation Area has 6 group campsites that can be reserved. Individual campsites cannot be reserved but are offered on a first-come, first-serve basis. Group campsites are located in the Echo (E) campground and Datura (D) campgrounds. Each group site can accommodate up to 16 people. Group sites Echo -1, Datura 2,3 and 4 has space for 6 passenger cars OR 2 RVs OR 2-3 trucks with camp trailers. Group site Echo-10 and Datura 3 have space for 4 passenger cars or 1 RV or 2 trucks with small trailers. There is a $8 reservation fee and each campsite is $60 a night.