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

Data Report 1184
By: , , , , , , , , and 
https://doi.org/10.3133/dr1184

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  • Document: Report (4 MB pdf) , HTML , XML
  • Data Release: USGS Data Release - 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
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Abstract

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 forcing from Intergovernmental Panel for Climate Change’s Sixth Assessment Report Coupled Model Intercomparison Project. The data generated using these methods provide stakeholders and decision makers with a spatially explicit, rigorous valuation of how, where, and when climate change and sea-level rise increase coastal storm-induced flooding to help identify areas where management and (or) restoration could potentially help reduce the risk to, and increase the resiliency of, the coastal communities in the populated Hawaiian, Mariana, and American Samoan Islands.

Suggested Citation

Storlazzi, C.D., Reguero, B.G., Gaido L., C., Alkins, K.C., Lowrie, C., Nederhoff, K.M., Erikson, L.H., O’Neill, A.C., and Beck, M.W., 2024, Forecasting storm-induced coastal flooding for 21st century sea-level rise scenarios in the Hawaiian, Mariana, and American Samoan Islands: U.S. Geological Survey Data Report 1184, 21 p., https://doi.org/10.3133/dr1184.

ISSN: 2771-9448 (online)

Study Area

Table of Contents

  • Abstract 
  • Introduction 
  • Methodology 
  • Conclusions 
  • Acknowledgments 
  • References Cited 
  • Appendix 1. SWAN Model Settings 
  • Appendix 2. SWAN Model Grid Information 
  • Appendix 3. Bathymetric Datasets 
  • Appendix 4. Cross-shore XBeach Transects 
  • Appendix 5. XBeach Model Settings 
  • Appendix 6. Benthic Habitat and Shoreline Datasets 
  • Appendix 7. SFINCS Model Settings 
  • Appendix 8. SFINCS Model Grid Information
Publication type Report
Publication Subtype USGS Numbered Series
Title Forecasting storm-induced coastal flooding for 21st century sea-level rise scenarios in the Hawaiian, Mariana, and American Samoan Islands
Series title Data Report
Series number 1184
DOI 10.3133/dr1184
Year Published 2024
Language English
Publisher U.S. Geological Survey
Publisher location Reston, VA
Contributing office(s) Coastal and Marine Geology Program, Pacific Coastal and Marine Science Center
Description Report: iv, 21 p.; Data Release
Country United States
State Hawaii
Online Only (Y/N) Y
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