Zion Canyon is a very active geologic setting. The same geologic processes that created the towering canyon walls, rugged foothills, and dynamic river corridor are still at work today. Landslides, rock falls, floods, poor soils, earthquakes and other hazards are present throughout the town. Virtually every property is subject to at least one, and usually many, geologic hazards.
The Town Ordinance requires developers to take geologic hazards into account when planning and constructing new development. Property owners and developers should be aware of the various hazards that exist on their properties, and should actively seek to mitigate the risks these hazards pose.
The Utah Geologic Survey has completed an investigation of geologic hazards in Zion Canyon. That study (Geologic-Hazard Investigation State Route 9 Corridor, La Verkin City to Town of Springdale, Washington County, Utah) provides a general analysis of hazards that exist in the area. It is a useful tool for property owners to identify hazards that may exist on their properties. Site specific geologic hard studies should be conducted on all properties prior to development to analyze and identify specific threats on individual properties.
Excerpts of the hazard maps associated with the UGS study are reproduced below. To get full benefit of the UGS investigation it is necessary to consult the original maps which include explanations and descriptions of the hazards. These maps are large files not suitable for the internet. They are available by contacting Town Staff. Please contact the Town Staff or reference the UGS study for additional information.