On the public campground side, Clear Lake State Park, on the namesake lake’s shore, has many campground options—both drive-in and hike or bike-in—within its 68 square miles. While there are no RV hookups in the park, each of the 149 drive-up sites (spread between four campgrounds) can accommodate a camper or trailer of up to 35 feet and are convenient to showers and restrooms.
While four-legged family members are banned from the park’s designated swimming beaches, you can take them for a dip at the non-designated beach between sites 57 and 58. Check in at the visitor center to find out where, outside of campgrounds, dogs are allowed.
If you’re up for a shortish Lake County hike, try one of the trails in the Indian Valley Wildlife Area around Indian Valley Reservoir, a popular fishing spot. Highland Springs Recreation Area, a 3,200-acre preserve just outside Lakeport, has a disc golf course as well as hiking and equestrian trails. Find more Lake County trail suggestions here.