Where does Nya's family live during the dry period each year when the pond near their home dries up in the nonfiction book, A Long Walk to Water?

Every year during the dry season, Nya's family moves to a camp three days' walk from their village because the pond near their village completely dries up and the lake is the closest water available. Nya's family has no house at the camp; they sleep in makeshift shelters and leave most of their belongings behind in their village.