UH Hilo Spatial Data Analysis and Visualization (SDAV) Lab Ryan L. Perroy 2025 raster digital data Sciencebase US Geological Survey Ryan Perroy (University of Hawai'i at Hilo), orcid: 0000-0002-4210-3281. https://doi.org/10.5066/P13TMMYA Ryan L. Perroy 2023 report Hilo, HI UH Hilo Spatial Data Analysis and Visualization (SDAV) Lab https://www.sciencebase.gov/catalog/item/5f3165bd82ceae4cb3ca5261 The objective of this project was to create a shoreline inventory for Hawai‘i Island, the largest and most diverse island in the Hawaiian archipelago. This was done via the collection and processing of high-resolution (<4 cm) aerial imagery along the approximately 428 km long shoreline of Hawai‘i Island using a helicopter-mounted imaging system developed by the University of Hawai‘i at Hilo Spatial Data Analysis & Visualization (SDAV) research laboratory. The collected imagery is supplemented by survey-grade ground control data gathered across a limited number of high priority coastline segments, which were determined in coordination with the Hawai‘i County planning department and land managers. This data collection includes orthomosaics rasters, digital surface model rasters, bare earth digital elevation model rasters, classified point cloud las files, and model outputs of sea level rise inundation for the shoreline of Hawai'i. The files in each of these datasets are labeled with the quadrants of the island (Northeast, Northwest, Southeast and Southwest) and given priority levels based on the quality of shoreline remaining (high, medium, low). Bare earth digital elevation model rasters, classified point cloud las files, and model outputs of sea level rise inundation were only collected for High Priority segments. These data products are a lasting resource for land managers, local government, and the scientific community as we grapple with the challenges of building community resilience and conserving key coastal resources and environments in a time of rapid change. 20220707 20220810 20220830 20220927 20221011 20221027 20210813 20220803 20210907 ground condition Complete None planned -156.0773 -154.7699 20.2931 18.8543 ISO 19115 Topic Category elevation imageryBaseMapsEarthCover USGS Thesaurus aerial photography geospatial datasets sea-level change climate change digital elevation models None digital surface model orthomosaic point cloud USGS Metadata Identifier USGS:66840f48d34e0f592272b403 Common geographic areas Hawaii No data access constraints. These data are marked with a Creative Common CC0 1.0 Universal License, thus are in the public domain and do not have any use constraints. Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the University of Hawai‘i at Hilo Spatial Data Analysis and Visualization Lab as the originator of the dataset. Ryan Perroy University of Hawai‘i at Hilo Principal Investigator mailing and physical

Spatial Data Analysis & Visualization Research Laboratory

Hilo HI 96720 USA (808) 932-7259 rperroy@hawaii.edu Funding and support for this project was provided by the Pacific Islands Climate Adaptation Science Center (PI-CASC), a collaborative partnership between the US Geological Survey and a university consortium, the Hawai‘i Office of Planning, Coastal Zone Management Program, pursuant to National Oceanic and Atmospheric Administration Award number NA18NOS4190082, funded in part by the Coastal Zone Management Act of 1972, as amended, administered by the Office of Coastal Management, National Ocean Service, National Oceanic and Atmospheric Administration, United States Department of Commerce. The views expressed herein are those of the authors and do not necessarily reflect the views of NOAA or any of its subagencies. DEMs, DSMs and Orthomosaic spatial files contains data available in cloud optimized GeoTIFF (.tif) format produced using GDAL python package. see dataset specific metadata file for details. see dataset specific metadata file for details. see dataset specific metadata file for details. see dataset specific metadata file for details. see dataset specific metadata file for details. see dataset specific metadata file for details. 2024 Raster Grid Cell 40778 12383 Universal Transverse Mercator 5 0.9996 -153 0 500000 0 coordinate pair 0.03959 0.03959 meters North American Datum of 1983 (NAD 83) HARN Geodetic Reference System 1980 6378137.000000 298.257222 Collected_Segment.csv Metadata details for each segment flown including: segement number, priority level, quadrant and date collected Producer Defined Quadrant Geographical quadrant of the island. Producer Defined NE Northeast Producer defined NW Northwest Producer defined SE Southeast Producer defined SW Southwest Producer defined Priority Designated priority level for preservation based on the quality of shoreline remaining. Producer Defined High High priority Producer defined Low Low priority Producer defined Medium Medium priority Producer defined Date Date the segment was collected, formatted in YEAR-MONTH-DAY Producer Defined 20210813 20221027 Segment Unique name given to the segment based on the geographical location. Producer Defined Unique name given to the segment based on the geographical location and proximity to landmarks. To view the list of segements, see attached "Collected_Segment" csv file containing metadata details including: segement number, priority level, quadrant and date collected. There is also a PDF map, HI_Island_Coastal_Survey_Areas, included calling out the different priority levels across the island. Perroy, R. L., UH Hilo Spatial Data Analysis and Visualization (SDAV) Lab, 2025, Spatial Data Derived from High-Resolution Aerial Imagery Collected by Helicopter-Mounted Cameras Over the Shoreline of Hawai‘i Island in 2021-2022: US Geological Survey Data Release, https://doi.org/10.5066/P13TMMYA U.S. Geological Survey GS ScienceBase mailing address

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