Projected coastal flooding extents and depths for 1-, 20-, and 100-year return interval storms and 0.00, +0.25, +0.50, +1.00, +1.50, +2.00, and +3.00 meter sea-level rise scenarios in the Hawaiian, Mariana, and American Samoan Islands

This data release provides flooding extent polygons and flood depth rasters (geotiffs) based on sea-level rise and wave-driven total water levels for the coast of the most populated Hawaiian, Mariana, and American Samoan Islands. Oceanographic, coastal engineering, ecologic, and geospatial data and tools were combined to evaluate the increased risks of storm-induced coastal flooding due to climate change and sea-level rise. We followed risk-based valuation approaches to map flooding due to waves and storm surge at 10 square meter resolution along these islands’ coastlines for annual (1-year), 20-year, and 100-year return-interval storm events and +0.25 m, +0.50 m, +1.00 m, +1.50 m, +2.00 m, and +3.00 m sea-level...

Categories: Data; Tags: CMHRP, Climate Change, Climatology, Coastal Processes, Coastal and Marine Hazards and Resources Program, All tags... Earth sciences, Effects of climate change, Environmental Equity, Environmental Justice, Flooding, Floods, Geography, Geomorphology, Geophysics, Geospatial Datasets, Guam, Hawaiian Islands, Hydrology, Island of Hawaiʻi, Kaua'i, Land Use Change, Mariana Islands, Marine Geology, Mathematical modeling, Maui, Moloka'i, O'ahu, Ofu Island, Olosega Island, PCMSC, Pacific Coastal and Marine Science Center, Physical Habitats and Geomorphology, Predictions, Saipan Island, Sea level change, Sea-level Change, Spatial Analysis, State of Hawaii, Storms, Tau Island, Territory of American Samoa, Tutuila Island, U.S. Geological Survey, USGS, Waves, environment, geoscientificInformation, oceans, Fewer tags

National Park Service Pamphlet - Climate-driven Changes in Storms and Sea Level Increases Flooding of U.S. Pacific Island Parks

Key Points Coastal flooding during storms negatively impacts access, infrastructure, and natural, cultural, and historical resources in parks. Coastal flooding is expected to become more frequent and more damaging in the future, because of rising seas and changes in the paths and intensities of storms. As sea levels rise, waves will break closer to shore and run-up will reach farther inland, increasing flood risk. On average, 0.25 meter (10 inches) of sea-level rise will double tropical storm flooding in parks.

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Forecasting Storm-Induced Coastal Flooding for 21st Century Sea-Level Rise Scenarios in the Hawaiian, Mariana, and American Samoan Islands

Oceanographic, coastal engineering, ecologic, and geospatial data and tools were combined to evaluate the increased risks of storm-induced coastal flooding in the populated Hawaiian, Mariana, and American Samoan Islands as a result of climate change and sea-level rise. We followed a hybrid (dynamical and statistical) downscaling approach to map flooding due to waves and storm surge at 10-square meter resolution along all 1,870 kilometers of these islands’ coastlines for annual (1-year), 20-year, and 100-year return-interval storm events and +0.00 meter (m), +0.25 m, +0.50 m, +1.00 m, +1.50 m, +2.00 m, and +3.00 m sea-level rise scenarios. We quantified the coastal flood depths and extents using the latest climate...

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Fish and Wildlife Service Pamphlet - Climate-driven Changes in Storms and Sea Level Increases Flooding of U.S. Pacific Island Refuges

Key Points Coastal flooding during storms negatively impacts access, infrastructure, and natural resources in refuges. Coastal flooding is expected to become more frequent and more damaging in the future, because of rising seas and changes in the paths and intensities of storms. As sea levels rise, waves will break closer to shore and run-up will reach farther inland, increasing flood risk. On average, 0.25 meter (10 inches) of sea-level rise will triple tropical storm flooding in refuges.

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