Denali National Park (DENA) is home to iconic and breathtaking landscapes surrounding the tallest mountain range in North America, the Alaska Range. The park, which covers 6 million acres, is a major draw for tourism and recreation, making it an important economic engine for central Alaska. However, the geologic forces that created the beautiful, steep landscape of DENA also make it prone to geologic hazards (geohazards) like landslides, debris flows, and earthquakes. DENA has only one major road, called the Park Road, that serves nearly all of its infrastructure. The success of DENA as a visitor destination, an economic engine, and a safe environment for visitors, residents, and staff relies on the resilience of this road, making it a major transportation lifeline for the region.
Since 2017, the National Park Service and the U.S. Geological Survey National Cooperative Geologic Mapping Program have partnered to produce a new high-resolution geologic map of the Park Road corridor to identify and address ongoing geohazards affecting DENA infrastructure. In the area of Polychrome Overlook, this map is being used to guide a new route for the Park Road around an area of landslide-prone slopes, where ongoing slumping is costing National Park Service millions of dollars in annual road maintenance costs. Beyond this area, the map serves as a park resource to assess geohazard risk in future infrastructure and management decisions. Geologic mapping is also fueling new research in understanding the geologic and tectonic history of DENA, while training a new generation of geologic mappers through the USGS EDMAP program.
Hudson, A.M., Ruleman, C.A., Capps, D.M., 2020, Assessing geohazards to the Denali National Park Road with geologic mapping: U.S. Geological Survey Fact Sheet 2020–3016, 2 p., https://doi.org/10.3133/fs20203016.
ISSN: 2327-6932 (online)
ISSN: 2327-6916 (print)
Table of Contents
- Denali National Park Road— An Economic Lifeline in Alaska
- U.S. Geological Survey Surficial Geologic Mapping— Identifying Geohazards in the Park Road Corridor
- Park Road Reroute Planning near Polychrome Overlook
- Collaborative Research—Active Faults and Glaciation
- References Cited
|Publication Subtype||USGS Numbered Series|
|Title||Assessing geohazards to the Denali National Park road with geologic mapping|
|Series title||Fact Sheet|
|Publisher||U.S. Geological Survey|
|Publisher location||Reston, VA|
|Contributing office(s)||Geosciences and Environmental Change Science Center|
|Other Geospatial||Denali National Park|
|Online Only (Y/N)||N|
|Google Analytic Metrics||Metrics page|