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Contractor vertical accuracy checkpoints for 3D Elevation Program digital elevation models in the Northern Gulf of Mexico and Atlantic coastal regions, 2012–2020

Metadata Updated: November 27, 2025

Vertical accuracy of elevation data in coastal environments is critical because small variations in elevation can affect an area’s exposure to waves, tides, and storm-related flooding. Elevation data contractors typically quantify the vertical accuracy of digital elevation models (DEMs) developed using light detection and ranging data acquisition on a per-project basis to gauge whether the datasets meet quality and accuracy standards. To better understand the vertical accuracy of DEMs along the Gulf of Mexico and Atlantic coast, we collated over 5200 contractor points for this region that were collected for per-project-level analyses produced for assessing DEMs acquired for the U.S. Geological Survey’s 3D Elevation Program. Upon pooling these data, we integrated attributes related to land cover from the National Oceanic and Atmospheric Administration's (NOAA) Coastal Change Assessment Program (C-CAP) 10 m BETA land cover product. Vegetative state, a derivative of land cover, was described as non-vegetated or vegetated. USGS Lidar Base Specification Quality Level (NGP, 2022), a derivative of point spacing, was obtained via the metadata of the elevation data, and regional classifiers were assigned based on dividing the coastal region using Everglades National Park and the North Carolina-Virginia border.

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Dates

Metadata Created Date September 14, 2025
Metadata Updated Date November 27, 2025

Metadata Source

Harvested from DOI USGS DCAT-US

Additional Metadata

Resource Type Dataset
Metadata Created Date September 14, 2025
Metadata Updated Date November 27, 2025
Publisher U.S. Geological Survey
Maintainer
Identifier http://datainventory.doi.gov/id/dataset/usgs-64b8833ed34e70357a2b56a0
Data Last Modified 2024-07-08T00:00:00Z
Category geospatial
Public Access Level public
Bureau Code 010:12
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID https://ddi.doi.gov/usgs-data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Harvest Object Id 7cd5c5b3-36ae-4bdf-af81-17638db5736b
Harvest Source Id 2b80d118-ab3a-48ba-bd93-996bbacefac2
Harvest Source Title DOI USGS DCAT-US
Metadata Type geospatial
Source Datajson Identifier True
Source Hash 4d6b7c825e2f16eab591e75b9b60f98bd7a8a902d1407e88c3e9c73c1034681c
Source Schema Version 1.1

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