[header] How to camp at lake ray roberts in sanger, texas [title] Know that camping is allowed only in the 2 main sections of ray roberts lake state park : [step] Isle du bois and johnson branch. [substeps] Isle du bois, on the south side of the lake, is the older campground located in denton county. Johnson branch unit, on the north side of the lake, is in denton and cooke counties. 
Both overnight units have a complex manager and assistant manager. [title] Pay entrance fees to enter the park at lake ray roberts.