19' - At 19.0 ft, major flooding will occur to the areas adjacent to the North Fork Virgin River. Areas include Springdale, Rockville, and Virgin.<br><br>18' - At 18.0 ft, moderate flooding of the areas adjacent to the North Fork Virgin River including Springdale, Rockville, and Virgin River.<br><br>17' - At 17.0 ft, minor flooding will occur along the North Fork Virgin River in Zion National Park. Structures in this area may be damaged and take on water.<br><br>