To get to Illipah Reservoir Recreation Area and Campground, you need to drive a graded gravel road. We saw people in fifth wheels and trailers so they must have been okay with the washboards. The sites are spaced far enough apart for privacy as there are no trees for shade. There are shaded picnic tables using those half circle metal shade screens.
There were several single vault toilets which were clean. We had a site which overlooked the reservoir where we saw a small roundup of cattle. It is a beautiful place in a stark barren sort of way. The winds were strong when we stayed there in mid-October 2020. It was also cold getting to 22° in the early morning. But, it was brightly sunny.
This is a free site so there were quite a few people there including some who came in late at night. It is hard to find places to camp in the dark as they are spread out. After they settled in , it was quiet and the sky was filled with stars.
We liked staying here as we wanted to explore Hamilton ghost town 11 miles up a mostly decent gravel road.