What type of surface do the modern camp sites have (grass, gravel, cement, paved)? We do not like grass sites, would prefer paved or gravel?

There is a mixture of camp site surfaces. Some grass and some cement for RV use. They also have a few cabins one can rent.

Grass

I honestly have no clue about the camp site cause I've never gone camping at the state park before just visited the park itself which is mostly all sand these days except for the grass by the picnic table area