Las Colonias Park sits along the Colorado River just outside downtown Grand Junction, part of a roughly 140-acre riverfront redevelopment whose surf channel opened around 2020. Rather than one built feature, the park uses a side slough off the main river to produce a mellow, surfable wave alongside a beach and wading areas, with the adjacent Butterfly Pond letting beginners get their feet wet first. It's new enough that locals are still dialing in the best flows and lines, so conditions and consistency remain a work in progress. Grand Junction Adventures rents boards and boats right near the launch if you're coming through without gear.