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  • Significant Hazards on State Route 9 Near Zion National Park
    by kcsg.com news
    Published - 03/13/14 - 08:45 AM | 0 0 comments | 17 17 recommendations | email to a friend | print
    After Significant Hazards on State Route 9 Near Zion National Park. Utah.gov photo
    After Significant Hazards on State Route 9 Near Zion National Park. Utah.gov photo
    slideshow
    Before Significant Hazards on State Route 9 Near Zion National Park. Utah.gov photo
    Before Significant Hazards on State Route 9 Near Zion National Park. Utah.gov photo
    slideshow
    North Fork of Virgin River Flood
    North Fork of Virgin River Flood
    slideshow
    Rockville Rock Fall
    Rockville Rock Fall
    slideshow
    Watchman landslide in Springdale
    Watchman landslide in Springdale
    slideshow
    (WASHINGTON COUNTY, Utah) - There are significant geologic hazards present along State Route 9, between La Verkin and Springdale in Washington County, according to the Utah Geological Survey (UGS). Geologists recently released a comprehensive report addressing the numerous geologic hazards that threaten the growing communities of La Verkin, Virgin, Rockville, and Springdale. All of the communities are on State Route 9 which is the main transportation corridor for more than 2.5 million annual visitors to Zion National Park. “Recent damaging and fatal rock falls in Rockville, landslides in Springdale, and floods along the Virgin River demonstrate that many of the geologic processes that have shaped this area’s outstanding scenery also make this area prone to geologic hazards,’ says Tyler Knudsen, UGS geologist.

    The report includes nine geologic-hazard maps that cover flooding and debris flows, rock fall, landslides, surface faulting, liquefaction, collapsible soil, expansive soil and rock, gypsiferous soil and rock, and soil piping, erosion, and wind-blown sand. Each map includes information on the nature and distribution of the hazard, how the maps were generated, and methods that may reduce the hazard. The maps provide critical information to public administrative, planning, and safety officials, as well as consultants, landowners, perspective landowners, and others on the kinds and locations of geologic hazards that may affect existing and future development in the area. The study includes customizable PDF versions of the maps that allow the user to display hazard areas on their choice of a topographic, shaded relief, or aerial-photo background, ensuring a particular parcel is easy to find.

    The maps were produced with support from the Utah Permanent Community Impact Fund Board, and the municipalities of Springdale, Rockville, Virgin, and La Verkin. Geologic hazards of the State Route 9 Corridor, La Verkin City to Town of Springdale, Washington County, Utah (Special Study 148) is available on DVD (13p., 9 pl) for $24.95 which can also be available as print on demand, and it also can be viewed on the UGS website at http://geology.utah.gov/online/ss/ss-148/ss-148txt.pdf

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