Glen Canyon National Recreation Area encompasses Lake Powell -- a vast body of deep blue water contained within orange-red cliff walls. It offers excellent opportunities for fishing, and in summer when water temperatures climb to a comfortable 70-80 degrees, swimming and water skiing. It is extremely popular with houseboaters.., and a vast panorama of human history.Glen Canyon National Recreation Area, at the heart of the "Grand Circle," provides unique and refreshing opportunities for travel-weary visitorsWith 1.2 million acres of golden cliffs, lush hanging gardens, impossibly narrow slot canyons, and the brilliant blue paradox of Lake Powell to visit.