Wahweap Creek is a 55.6-mile long intermittent stream in southern Utah in the United States, and is a tributary of the Colorado River. It drains a rugged, high elevation, largely roadless mesa and canyon country in the Colorado Plateau region. The creek flows into the Lake Powell reservoir at Wahweap Bay where it gives its name to the Wahweap Marina, a po…Wahweap Creek is a 55.6-mile long intermittent stream in southern Utah in the United States, and is a tributary of the Colorado River. It drains a rugged, high elevation, largely roadless mesa and canyon country in the Colorado Plateau region. The creek flows into the Lake Powell reservoir at Wahweap Bay where it gives its name to the Wahweap Marina, a popular access point to the Glen Canyon National Recreation Area.