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  2. Pacific Coastal and Marine Science Center
  3. Coastal Storm Modeling System (CoSMoS)
  4. 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 (ver. 2.1, February 2025)
  5. American Samoan Islands
  6. Projected coastal flooding inundation depths for 0.00, +0.25, +0.50, +1.00-, +1.50-, +2.00-, and +3.00-meter sea-level rise scenarios in American Samoa

Projected coastal flooding inundation depths for 0.00, +0.25, +0.50, +1.00-, +1.50-, +2.00-, and +3.00-meter sea-level rise scenarios in American Samoa

Dates

Publication Date
Time Period
2024-03-15
Revision
2025-02-21

Citation

Alkins, K.C., Lasserre, G., Reguero, B.G, Storlazzi, C.D., and Fregoso, T., 2024, 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 (ver. 2.1, February 2025): U.S. Geological Survey data release, https://doi.org/10.5066/P9RIQ7S7.

Summary

This data release provides flood depth GeoTIFFs based on sea-level rise (SLR) for the coast of the most populated American Samoa s most populated islands of Tutuila, Ofu-Olosega, and Ta'u. Digital elevation models were used to extract SLR flooded areas at 10-m2 resolution along the coastlines for 0.00 m, +0.25 m, +0.50 m, +1.00 m, +1.50 m, +2.00 m, and +3.00 m SLR scenarios.

Contacts

Point of Contact :
PCMSC Science Data Coordinator
Originator :
Kristen C. Alkins, Camila (Contractor) Gaido Lasserre, Borja (Contractor) Gonzalez Reguero, Curt D Storlazzi, Theresa Fregoso
Metadata Contact :
PCMSC Science Data Coordinator
Publisher :
U.S. Geological Survey
SDC Data Owner :
Pacific Coastal and Marine Science Center
USGS Mission Area :
Natural Hazards
Distributor :
U.S. Geological Survey - ScienceBase

Attached Files

Click on title to download individual files attached to this item.

Projections_SLRDepths_AmericanSamoa_metadata.xml
Original FGDC Metadata
View 		21.23 KB application/fgdc+xml
SLR_Ofu_depths.zip 62.92 KB application/zip
SLR_Tau_depths.zip 68.48 KB application/zip
SLR_Tutuila_depths.zip 400.88 KB application/zip

Purpose

These flood extent files were created to evaluate coastal flooding in the most populated American Samoan Islands of Tutuila, Ofu-Olosega, and Taʻū due to climate change influenced SLR. The data are intended to provide a spatially explicit, rigorous valuation of how, where, and when climate change influenced SLR 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 American Samoa. The data can be used with geographic information systems (GIS) software for research purposes. The methods follow a sequence of steps derived from Storlazzi and others (2019, 2021) and Reguero and others (2021) that integrate physics-based oceanographic and coastal engineering modeling, along with ecologic and geospatial data and tools, to quantify the role of climate change influenced SLR in increasing coastal flooding hazards.

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Communities

  • Coastal Storm Modeling System (CoSMoS)
  • Pacific Coastal and Marine Science Center

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