Cherry Creek State Park is a state park, with state park rules

Cherry Creek State Park sits right in the middle of the Denver metro area, in Arapahoe County, with a big reservoir, miles of trails, campsites, and a lot of boating in summer. Because it is a state park, it runs on Colorado Parks and Wildlife rules rather than city park rules.

Two of those rules surprise newcomers. First, getting in usually means a park pass, either a daily pass or an annual one, rather than just walking or driving in for free. Second, if you bring a boat, expect an aquatic nuisance species inspection before you launch. These checks look for tiny invasive mussels and plants that can hitch a ride between waters and are very hard to remove once established. Cherry Creek Reservoir has already had an invasive aquatic plant detected in it, which is part of why the inspections matter.

None of this is meant to discourage a visit. It is just the normal rhythm of a Colorado state park: bring a pass, plan a little extra time at the boat ramp, and clean, drain, and dry your gear so you do not move invasive species from one lake to the next.

Current passes, hours, and boat inspection rules are posted at Colorado Parks and Wildlife.