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USGS Coastal and Marine Geology Program

USGS Coastal and Marine Geology Program > National Assessment of Coastal Change Hazards > Research > Long-Term Coastal Change

National Assessment of Coastal Change Hazards

Long-Term Coastal Change

Aerial photograph looking to the southwest along the southern end of Cedar Island, VA
Oblique aerial photograph looking to the southwest along the southern end of Cedar Island, Virginia. This area is experiencing long-term erosion rates greater than -3.0 meters per year. [larger version]

Chronic erosion is widespread along most open-ocean coastlines of the U.S. and is an increasing threat to growing coastal populations and associated infrastructure. Long-term coastal change can also impact natural coastal processes and affect sensitive coastal ecosystems. Understanding how the coast has changed in the past and what factors have influenced those changes guides our understanding of what may happen in the future. As part of the National Assessment of Coastal Change Hazards project, the USGS conducts studies of coastal change to better understand long-term coastal evolution and its response to factors such as the cumulative impact of storms, sea-level rise, changes in sediment supply, and human alterations over time periods spanning many decades. Goals of this project include developing and improving coastal-change assessments and supporting long-term planning and decision making to ensure sustainable coastal economies, infrastructure, and ecosystems.

Objectives

Coastal Change Hazards Portal

All long-term change data products listed below can be viewed or downloaded from our web portal, which provides centralized access to all Coastal Change Hazards products and enables users to apply these data to their specific needs.

Long-term shoreline change rates for several of the Virginia Barrier Islands (left) and the historic shoreline position data used to calculate the rates (right) as viewed in the Coastal Change Hazards portal.
Long-term shoreline change rates for several of the Virginia Barrier Islands (left) and the historic shoreline position data used to calculate the rates (right) as viewed in the Coastal Change Hazards portal. [larger version]

Products

Alaska

Reports

GIS Data

Atlantic Coast

Reports

GIS Data

Gulf Coast

Reports

GIS Data

Pacific Coast

Reports

GIS Data

Additional Resources

Contact Information

Emily Himmelstoss
USGS Woods Hole Coastal and Marine Science Center
384 Woods Hole Road
Woods Hole, MA 02543
Email: ehimmelstoss@usgs.gov
Phone: 508-457-2262
Fax: 598-457-2310

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Page Last Modified: November 20, 2017 @ 02:14 PM (JSG)