Chatfield State Park's campsites are scattered through prairie grass a short walk from the shore, and across the reservoir the Front Range stands as a wall along the western skyline. The lake is close enough that the kids can be down at the water before dinner and back before the grill's ready. At Cherry Creek State Park, the other reservoir camp on Denver's south side, the night winds down around the fire pit in the campground amphitheater.
Front Range families run these camps as a parked weekend. The motorhome rolls in on Friday, gets plugged in and hooked to water, and stays put until Sunday. Days go to the lake, and evenings come back to a rig with its own kitchen, a bed for everyone, and the heat or the air running. Stretch it to a full week and the routine holds, because the site's hookups take the tanks and the batteries out of the plan.
With the mountains straight across the water, Chatfield is the one to aim for in summer. It's also the bigger camp, spread over four areas with 146 of its 197 sites on full hookups, a dump station, and group sites with electric and water for families who come as a convoy.
Cherry Creek keeps full-hookup sites open year-round as of September 2026, alongside a dump station, showers and laundry, so it's the reservoir that still runs as a full-service camp in January. The laundry is also what turns a weekend there into a week without packing clothes for every day of it.
Summer weekends are the busy ones at both parks, and the site you land decides how big a motorhome makes sense, so book the campsite first and the rig second. If the open sites run short, or the trip is just two people, a smaller rig is the easier fit.
Castle Rock sits on I-25 between Denver and Colorado Springs, and a reservoir site on the city side also bookends a mountain trip, with a hookup night on the way out of town and another on the way home. The campgrounds and Estes Park bases for that week are on the Rocky Mountain National Park RV page. Longer one-way runs out of Denver, toward Salt Lake City or Las Vegas, are laid out on the Colorado RV page.
Castlewood Canyon and the old dam on Cherry Creek
Castlewood Canyon is Castle Rock's own state park, a gorge in the prairie with walls of the same Castle Rock conglomerate as the butte the town is named for. Up close the rock is rough and cobbled, and the trail along the canyon floor follows Cherry Creek, the same creek that fills the reservoir at the state park downstream. Partway along stand the ruins of a dam that burst, slabs of old masonry across the creek with the water running through the break.
Go out for the day and come back to the rig at Cherry Creek or Chatfield for the night. Entry takes a daily vehicle pass as of September 2026, and the walk out to the dam is the part to save the afternoon for.
Farther down I-25, the Jellystone resort at Larkspur draws families for weekends of its own. The same interstate runs on to Colorado Springs, and Cheyenne Mountain State Park and the Pikes Peak trips are on the Colorado Springs RV page.