Expedition Island

Expedition Island is a nature reserve spanning several acres along the Green River with recreational grounds, playground facilities, and multiple access points. The island connects to both riverbanks via bridges, making it accessible for visitors interested in water-based recreation.

John Wesley Powell launched his exploration expeditions of the Green River and Colorado River from this location in 1869 and 1871. These journeys were critical to mapping regions that remained largely unknown to the outside world at that time.

The island hosts annual gatherings like the River Festival and Art on the Green, which bring the community together throughout the year. These events show how the waterfront serves as a social hub where people celebrate their connection to the river.

The park provides picnic areas, fishing spots, and water sports access with convenient bridge connections from both sides of the river. The open layout and facilities make it straightforward to plan a day of outdoor recreation and water activities.

The expeditions that began here completed the mapping of lands in the continental United States that had remained unknown to the wider world. This achievement made the island a turning point in American exploration and geographical discovery.

Location: Green River

GPS coordinates: 41.52303,-109.47107

Latest update: December 13, 2025 11:46