Zion Canyon is a deep and narrow gorge in southwestern Utah, United States, carved by the North Fork of the Virgin River. Nearly the entire canyon is located within the western half of Zion National Park.DescriptionThe beginning of the canyon is usually delineated as the Temple of Sinawava, a vertical-walled natural amphitheater nearly 3000ft deep. The canyon actually begins much further upstream, however, and runs southward about 16mi through the Narrows to reach the Temple, where a seasonal tributary of the North Fork plunges over a tall waterfall during spring runoff and after heavy rain. The gorge then runs southwest through the national park, approaching 2000ft deep in places. While the canyon rim is dominated by desert, the canyon floor supports a forest and riparian zone watered by the North Fork Virgin River. The gorge then merges with Pine Creek Canyon as it winds out of the national park and past the community of Springdale. The canyon's end is where it meets the Virgin River, some 100mi northeast of Lake Mead, which the river ultimately flows into.Zion Canyon Drive and Zion-Mount Carmel Highway are the two major roads throughout the canyon. Zion Canyon Drive ends at the Temple of Sinawava, where the Riverside Walk trail follows the river upstream to the lower end of the Zion Narrows. Hiking trails further upstream descend into the Narrows, where the canyon floor is on average 20ft wide. Hiking is permitted in the Narrows when water levels are low enough, however, flash floods are known to rise quickly following heavy rainstorms. Many areas in the drainage of Zion Canyon have little or no soil cover, contributing to extremely brief but heavy storm runoff. In contrast, the floor of most of the main Zion Canyon is close to 1000ft wide, and is rich with river-deposited sediments. Tributaries to the river within the canyon include Deep, Kolob, Goose, Pine, and Oak Creeks.
