Topobathymetric Model of Puʻuhonua o Hōnaunau National Historical Park, 2011 to 2019

In recent years, rising sea levels have threatened critical infrastructure and cultural assets at Puʻuhonua o Hōnaunau National Historical Park thus motivating the park to make adaptive decisions in managing these key resources. To support the development of decision support tools for sea level rise preparedness, the U.S. Geological Survey (USGS) Coastal National Elevation Database (CoNED) Applications Project has created an integrated 1-meter topobathymetric digital elevation model (TBDEM) for Puʻuhonua o Hōnaunau National Historical Park. This dataset was developed in collaboration with the University of Hawaii- Mānoa Sea Level Center, Department of Interior Pacific Island Climate Adaptation Science Center, and Puʻuhonua o Hōnaunau National Historical Park. High-resolution coastal topobathymetric data are required to characterize flooding, storms, and sea-level rise inundation hazard zones and other earth science applications, such as the development of wave and storm surge models. This TBDEM consists of the best available multi-source topographic and bathymetric elevation data for Puʻuhonua o Hōnaunau National Historical Park including neighboring coves and inlets. The Puʻuhonua o Hōnaunau TBDEM integrates six different data sources including Uncrewed Aerial System (UAS) topographic lidar, UAS structure-from-motion, ground-based lidar, topobathymetric lidar, and bathymetric data obtained from USGS, the National Oceanic and Atmospheric Administration, and the U.S. Army Corps of Engineers. The topographic and bathymetric surveys were sorted and prioritized based on survey date, accuracy, spatial distribution, and point density to develop a model based on the best available topographic and bathymetric elevation data. Because bathymetric data are typically referenced to tidal datums, such as Mean High Water or Mean Low Water, all tidally referenced heights were transformed into orthometric heights based on the GEOID12B geoid, which is normally used for mapping elevation on land using the North American Vertical Datum of 1988. The spatial horizontal resolution is 1-meter. The overall temporal range of the input topography and bathymetry is 2011 to 2019 with a maximum depth extending to 277 meters. The topography surveys were acquired in 2019. The bathymetry surveys were acquired between 2011 and 2013. This data release was funded by a Supplemental Proposal to Grant No. G15AP00140 by the University of Hawaii- Mānoa Sea Level Center from the Department of Interior Pacific Island Climate Adaptation Science Center and the USGS Coastal and Marine Hazards and Resources Program.

[
  "010:12"
]

[
  "geospatial"
]