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Sea-level rise online map viewer now available for Hawaii, Guam, and CNMI
Sea Level Rise and Coastal Flooding Impacts Viewer - Image of Hanalei Bay

Sea-level rise online map viewer now available for Hawaii, Guam, and CNMI

The National Oceanic and Atmospheric Administration (NOAA) released a web-mapping tool aimed at visualizing potential impacts from sea-level rise in Hawai’i, Guam and the Commonwealth of the Northern Marianas Islands (CNMI).  Known as the Sea Level Rise and Coastal Flooding Impacts Viewer, the tool serves as a simple and easy to use but powerful planning resource for planners, public officials, coastal managers, and communities engaged in climate adaptation planning and coastal inundation preparedness.

“Tools like the Sea Level Rise and Coastal Flooding Impacts Viewer can provide planners and decision makers with a preliminary look at sea-level rise and coastal flooding information,” said Jesse Souki, Director of the State of Hawai’i Office of Planning.  “Sea level rise scenarios can be integrated into land use decisions, along with other economic, social, and environmental considerations, to make wise investments in public infrastructure and ensure livable, resilient communities.”

The inclusion of the Pacific Islands into the national viewer was made possible through a partnership between the University of Hawai‘i at Mānoa School of Ocean and Earth Science and Technology (SOEST), University of Hawai‘i Sea Grant College Program (UH Sea Grant), and the National Oceanic and Atmospheric Administration’s Coastal Storms Program and Coastal Services Center.

The map features of the tool utilize high-resolution aerial images overlain on top of elevation data, enabling users to display and visualize coastal inundation associated with different sea level rise scenarios – ranging from zero to six feet above mean sea level.  Using a Google Map as a base map, the tool highlights sea-level rise-induced coastal inundation and flooding, helps viewers visualize impacts at select local landmarks and critical infrastructure, models potential habitat migration due to sea-level rise, and offers an overlay of social vulnerability information based on population attributes like age, income, and poverty.

“This tool fills an important gap for planners and managers in Hawai‘i,” explains Dr. Charles (Chip) Fletcher, associate dean for academic affairs at SOEST and map development partner.  “On a national scale, the Sea Level Rise Viewer and Coastal Flooding Impacts Viewer fills the need to provide planners and managers with a screening-level tool that provides a preliminary look at sea level rise impacts.  With the amount of detail and options it provides, the Sea Level Rise Viewer is at the cutting edge of planning tools,” states Dr. Fletcher.

“With these maps showing community assets at risk of sea-level impacts, the discussion can begin on questions such as ‘What policy changes are necessary to prepare for future climate change in Hawai‘i?’ and ‘How shall we adapt to long-term, essentially irreversible changes in sea level?’” stresses Dr. Fletcher.

The first of a series of workshops in Hawai‘i will be held on September 19 and 20 at the Sheraton Kona Resort and Spa at Keauhou Bay for registered participants at the annual Hawai’i Congress of Planning Officials Conference.  For information about future workshops call the NOAA Pacific Services Center at (808) 532-3200.  For more information about the data, the modeling approach, and using the tool, visit the Sea Level Rise and Coastal Flooding Impacts Viewer’s support page, www.csc.noaa.gov/slr.

The University of Hawai’i Sea Grant College Program is part of the University of Hawai‘i at Mānoa’s prestigious School of Ocean and Earth Science and Technology. It supports an innovative program of research, education and extension services directed to the improved understanding and stewardship of coastal and marine resources of the state, region and nation. Science serving Hawai‘i and the Pacific for over 40 years.

Source:  A University of Hawai’i Sea Grant College Program Press Release

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