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USGS Coastal Change Hazards Portal



Welcome to the U.S. Geological Survey's Coastal Change Hazards (CCH) portal, where you have interactive access to coastal change science and data for our Nation’s coasts. The CCH portal is a collaborative project between USGS Coastal and Marine Geology Program (CMGP) scientists and informatics specialists and software engineers at the USGS Center for Integrated Data Analytics (CIDA).

This page provides background on the portal, and a summary of how to use its basic functions. We encourage you to explore and learn. If you see changes needed or have ideas for improving the access and use of this USGS data and information, please email

Portal Functionality

The Coastal Change Hazards portal organizes products and information into discrete items within three specific coastal hazard themes: 1) severe storms, 2) shoreline change, and 3) sea-level rise. Each data item represents an individual research product. Items with a common topic area are grouped into aggregations within a theme, to show the breadth of that topic and make it easy to explore related information. Items and aggregations can be added to a bucket that saves this information for download or sharing. See video below to view a short tutorial on how to find and share data.

Icon Description
Info Page Icon Learn about the portal, its background and basic functions.
Bucket Icon Put items of interest into the bucket. From here, download data and products or share contents with friends and colleagues.
More Info Link Icon Find out more information about the item.
Zoom To Link Icon Zoom to the spatial extent of the item being viewed.
Explore Contents Link Icon Explore additional data sets and products within this item.
Add To Bucket Link Icon Add items to the bucket.
Bucket Links Change item visibility, download data, learn more or share an item.
Base Layer Change maps base layer: World Imagery, Street, Topo, and Ocean
Base Layer Click to view the maps legend
More Info Action Center Descriptions

Name Description
Return to Map: Go back to the map view of the portal.
Add to Your Bucket: Add this item to your bucket. Use the bucket to collect, view, and download lots of data and products, or share your bucket with friends and colleagues.
Map Services: Explore available services that can be added to your own or other web-based mapping applications.
Metadata: Review detailed geographic, bibliographic and other descriptive information about this item. The data are presented in the Catalog Service Web metadata format, and are Federal Geographic Data Committee geospatial standards compliant.
Download Dataset: Download this item to your computer.
Share This Info: Get a short URL to share this information with others.

Our Nation’s coastlines are constantly changing landscapes that pose unique management challenges. Robust scientific findings help identify areas that are most vulnerable to diverse coastal change hazards including beach and dune erosion, long-term shoreline change, and sea-level rise. The data, models, and tools available through the CCH portal can be used by federal and state agencies, non-governmental organizations, municipal entities, and private citizens. Here are some examples:

  • Coastal hazards information is used by planners and emergency managers as they work to protect resources, reduce risk, and prevent economic losses. Storm, shoreline change, and sea-level rise vulnerability assessments can improve understanding of the diversity and nature of specific coastal hazards. Our updated assessments describe how vulnerability has changed over time and inform plans for the future. This information can be viewed, downloaded, and shared. Web data services provided through the CCH portal allow USGS data to be incorporated into custom applications by other agencies, organizations, and private industry.
  • Coastal residents can visualize hazards in their area, download or print information, and share information with others through social media.
  • Emergency first-responders can access the most current, near-real-time updates of storm impact probabilities (collision, overwash, inundation), so they have current information in order to direct appropriate staging of response personnel and equipment.

The products provided through the CCH portal fulfill critical immediate and ongoing needs for scientifically credible and actionable information to increase resilience to storms and climate change. This information can support land use planning, infrastructure, ecosystem and cultural resource management decisions, as well as storm response and recovery. The explicit goal of the project is to enable users to apply and integrate the data and tools to address their specific needs.

extreme storms pic

Explore Extreme Storms

Coastal erosion hazards

shoreline change pic

Explore Shoreline Change

Historical positions and

rates of change

sea-level_rise pic

Explore Sea-Level Rise