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APA Utah Fall Conference Speaker

Tyler Knudsen

Senior Geologist
Utah Geological Survey

Tyler Knudsen is a Senior Geologist with the Utah Geological Survey’s Geologic Hazards Program in Cedar City. He holds a B.S. degree in geology from the University of Utah, a M.S. degree in geology from the University of Nevada, Las Vegas, and joined the UGS in 2006. Tyler has authored or co-authored several studies and maps on the geologic hazards of the St. George basin, Zion National Park, and Glen Canyon National Recreation Area. Other contributions include: paleoseismic investigations on the active Sevier and Washington faults, ground subsidence and earth fissure mapping in southwestern Utah, and emergency response to damaging rockfalls in Rockville and Zion National Park. Recent projects include Quaternary geologic mapping of the Mineral Mountains West and Opal Mound fault zones at the Utah FORGE site near Milford and comprehensive geologic-hazard mapping of the Bryce Canyon and Cedar City-Enoch areas.


Landslide Mobile Tour »

2024 Spring Conference, May 9, 2024 9:30 am

This mobile tour includes a drive up scenic Cedar Canyon to visit the problematic SR-14 landslide at milepost 8. Reports of landslide activity near milepost 8 on SR-14 date back to at least 1906. In recent decades, large landslides in 1989 and 2011 destroyed significant parts of SR-14, disrupting a critical regional transportation corridor. Since the reconstruction of SR-14 in 2012, persistent, relatively minor slumping and cracking of the roadway near the east flank of the 2011 slide have occurred requiring regular maintenance. More recently, in late spring of 2023, a 6-acre landslide formed near the west margin of the landslide complex that forced road closure for several hours. We will discuss the history of the SR-14 landslide and the value of recognizing landslide and rockfall hazards prior to development.

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