Palo Dura RV Park

Choice is parking lot with site for sewer and or scenic spots with out sewer

The RV park you are talking about is right off the interstate near the road that goes into Canyon TX. Not an appealing place. Stay in the state park, it's worth the extra effort. The bathhouses are in good condition. Check out my signature photolink. I have an entire album of about 100 pics of Palo Duro Canyon SP.

Oops! You are right. Memory not what it used to be.

We camped at Palo Duro State Park a few days ago. There are 3 RV campgrounds in the canyon - Sagebrush, Hackberry and Mesquite. Hackberry is 30amp and water but I think it was closed. Sagebrush and Mesquite are 30/50 amp and water. None have sewer connections. We camped at Mesquite which at the end of the canyon and the most remote. Beautiful area / great hiking. There are also many primitive tent sites along the main road in the park.
Only private CGs have full hookups in the area, and are not in the State Park or the Canyon, but are closeby. Palo Duro RV park is about 15 miles away. There is also one closer with zip lines and horseback rides, but I didn't catch the name of it. Don't know about hookups there.
Where ever you stay try to get down in the canyon for sunsets or sunrises if possible - very impressive!

:h From the state park website, it appears they do NOT have Full Hookups:
They do have Campsites with Water and Electric (30/50-amp)
Camping Fees Palo Duro Canyon State Park
But they do have:
Restrooms nearby
Showers nearby

I'd opt for the state park campsites as well, small holding tanks or not. Our previous TT only had 14 gal. grey tank. I'd have gone the state park campsites anytime.

Palo Dura Canyon State Park RV sites (in the canyon) have full hookups, including 50 amp power in two of the campground areas.
I would definitely opt for staying in the park.

http://rvparkreviews.com/regions/Texas/Canyon.html#CGID7711