Are there campsites?

No

Yes but not in that park

I think so, but if not they do at the other 2 parks near by.

All true, there is a state park within a few miles that has camping, but there is none at Devil's Gulch

At split creek down the road 5min

I recently went for camping at Palisades State Park, we had very good experience. And Devil's Gulch is so close to it.

Previous answer is the best one. Palisades or city park for camping

Palisades has camping and there is a city park that borders devils gulch with campsites.

No, but close by at Pallisade State Park.