I camped at a campground called Bushay Campground right on Lake Mendocino with my 35ft travel trailer last summer. There is a site within that has power (site B094) that is hard to find on reserveamerica's website - unless someone tells you about it like I just did. The site was 60+ ft long (shows 30, but trust me, I didn't disconnect my truck and had 20+ft behind me). The only issue is the trees all need some trimming. Not a problem, but just a heads up. Bushay campground is on the 20 a few miles before the 101.