Clear Creek Campground is a State Wildlife Area campground, similar to dispersed camping. There are a few spots near the creek that fill up fast and the rest are out in the open. We’ve stayed there a couple of times and if you can get a spot close to the creek it’s worth it, the open area “Not So Much”.
If you are looking for something a bit more civilized, I’d suggest Lakeview Campground by Twin Lakes. It’s about 5 or 6 miles farther north than Clear Creek & it’s a developed National Forest Campground with designated spots.