Ocean Hazards Database (OHD) for the State of Hawaii Statewide Coastal Highway Program Report

Published: 8 February 2024| Version 12 | DOI: 10.17632/7p3hyypmjm.12


Summary: This Ocean Hazards Database (OHD) contains all relevant geographic information system (GIS) layers, maps, measures, interpretations, and rankings from the Ocean Hazards Classification Scheme (OHCS) assessment of 302 mileposts and points of interest across coastal state routes in Hawaii. As a part of the State of Hawaii Department of Transportation Statewide Highway Shoreline Program Report, the OHCS assesses and ranks shoreline roadway vulnerability to historical sea-level rise rates (in/yr), projected sea-level rise rates by 2050 and 2100 (in/yr), mean tidal ranges (ft), maximum annually recurring peak wave periods (sec) and significant wave heights (ft), mean projected shoreline change rates (ft/yr) and coastal armoring, historical and hypothetical tsunami flow depths (ft), and hypothetical category 1-4 storm surge inundation heights (ft). OHCS ranking criteria and methods are described in Chapter 3 of the State of Hawaii Statewide Coastal Highway Program Report (2019). OHD materials are organized into coastal highway digital elevation models, ocean hazard map packages, ocean hazard supplementary maps, and ocean hazard supplementary tables. How to Download: Digital Elevation Models (DEM) '.mpk' contains GIS layers for nearshore topographic and bathymetric elevations on the islands of: Hawaii - http://dx.doi.org/10.17632/6dd26tt5n9 Maui - http://dx.doi.org/10.17632/zdmdy8jtsw Molokai - http://dx.doi.org/10.17632/vcr9rg5ttm Oahu - http://dx.doi.org/10.17632/xh84bv6y5c Kauai - http://dx.doi.org/10.17632/vwmprpp7xr Supplementary Maps '.tiff' for 302 mileposts contain image files of: Nearshore Transects - http://dx.doi.org/10.17632/h29374xc3g Offshore Transects - http://dx.doi.org/10.17632/b4w7c9y96s Sea-level Rise Inundation 1ft, 2ft, 3ft - http://dx.doi.org/10.17632/xf33cd2sd5 Sea-level Rise Inundation at 2050 - http://dx.doi.org/10.17632/nnb533964z Sea-level Rise Inundation at 2100 - http://dx.doi.org/10.17632/kfb838gzr7 Maximum Annually Recurring Wave Characteristics - http://dx.doi.org/10.17632/4f4sb8j3zc Projected Shoreline Change - http://dx.doi.org/10.17632/9krv2pj3bw Storm Surge Inundation - http://dx.doi.org/10.17632/kp8k3cdxxx Map Packages '.mpk', below, contain GIS layers and mapping layouts for the assessment and projection of sea-level rise inundation, maximum annually recurring wave characteristics, projected shoreline change, storm surge inundation, and offshore bathymetry. Supplementary Tables '.pdf', below, contain OHCS measured results and rankings for 302 mileposts and points of interest across coastal state routes in Hawaii. Representative dataset references are included in table footnotes. Milepost Locations '.kmz, .mpkx, and .xlsx', below, contain the location information, in different formats, of the 302 mileposts. This project was funded by the Hawaii Department of Transportation, HWY-06-16, entitled "Statewide Highway Shoreline Protection Program Study Update."



Civil Engineering, Tsunami Hazard Assessment, Coastal Hazard, Coastal Erosion, Hawaii, Sea-Level Rise, Storm Surge