Geologic Hazards of Cedar Valley, Iron County, Utah (SS-177)

By: Tyler R. Knudsen

SUMMARY: This study  used available geologic, geologic-hazard, hydrologic, soil, and geotechnical information to identify where geologic hazards may exist in the Cedar City, Cedar City NW, Enoch, and Kanarraville 7.5-minute quadrangles in the Cedar Valley area of Iron County, Utah. Growth in the area has increased since the 1990s, and as urbanization expands into areas less suited for development, geologic hazards become increasingly important in the planning, design, and construction of new facilities and infrastructure. This study’s purpose is to provide local administrators, geotechnical consultants, and the public with necessary geologic-hazard information for future development. This mapping also indicates where site-specific geotechnical/geologic-hazard investigations are necessary to protect health, welfare, and safety. This mapping can be viewed on the Utah Geologic Hazards Portal (https://maps.geology.utah.gov/hazards) and is included as an ArcGIS geodatabase with this report. Mapped hazards include collapsible soil, flood, earth fissures (ground cracks), radon gas, landslide, rockfall, expansive soil and rock, corrosive soil and rock, soluble soil and rock, piping and erosion, shallow bedrock, shallow groundwater, liquefaction, and wind-blown sand.

Published: 2025

Pages: 2

Scale: 1:24000

Location: Iron County, UT