It has been years since we visited Wahweap, but Wow, there have been lots of reconfigurations and additions, per the aerial photo.
This may be old news, but there are several Wahweap named campgrounds in close proximity, yet different locations. During our stay, Loop C was in the Wahweap-Stateline Campgrounds. Looks like they have added Loop D. The camping nearest the NPS Office was older, dirt/gravel, less shoulder room is staff housing. I don't remember any pullout sites, anywhere. Might be time to visit again as Wahweap is my favorite camping experience. We also had use of the facilities (pool, etc.) at the Lodge.