The Virgin River is a tributary of the Colorado River in the U.S. states of Utah, Nevada, and Arizona. The Virgin River Gorge, located between St. George, Utah, and Littlefield, Arizona, is a long canyon that has been carved out by the Virgin River in northwest Arizona. This river rises on the Colorado Plateau and created the topography of both Zion National Park and the Virgin River Gorge. The river Trail follows the Virgin River valley through the city of St. George in the southwest corner of Utah. The trail provides striking views of the river as well as connections to nearby residences, public facilities, and commercial centers. The river, flowing through spectacular Washington County, Utah, offers a rare chance to enjoy the stunning scenery of the Virgin River Gorge as well as its exciting whitewater. After flowing leisurely out of Zion National Park and past the city of St. George, the river begins its descent through the Virgin River Gorge. The riverbed is steep, dropping an average of 70 feet per mile - 10 times steeper than the Colorado River through the Grand Canyon. As one of the few western rivers not dam controlled, the river's water level depends solely on the annual snowpack of the surrounding mountains. Spring runoff period is the only time the Virgin is raftable. Low water levels due to a statewide drought the past several years has made the river temporarily unraftable; please check with local outfitters before planning a trip down the river.