Delta-X: Digital Elevation Model, MRD, LA, USA, 2021

Published by ORNL_DAAC | National Aeronautics and Space Administration | Metadata Last Checked: January 17, 2026 | Last Modified: 2026-01-13

This dataset provides an updated digital elevation model (DEM) for the Atchafalaya and Terrebonne basins in coastal Louisiana, USA. The DEM is updated from the Pre-Delta-X DEM and extended to the full Delta-X study area. This DEM was developed from multiple data sources, including sonar data collected during Pre-Delta-X and Delta-X campaigns, bathymetric data from the Coastal Protection and Restoration Authority System-Wide Assessment and Monitoring System (CPRA SWAMP), and NOAA, and topography from the National Elevation Dataset and LiDAR from US Geological Survey (USGS). The provided data layers include the DEM, a binary water/land mask, data source flags, and eight layers with analysis weighting factors for each pixel. Elevation values are provided in meters with respect to the North American Vertical Datum of 1988 (NAVD88). The weighting factors indicate how each data source contributed to this multisource DEM. The data are provided in cloud-optimized GeoTIFF (CoG) format.

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earth-science-coastal-processes-oceans-coastal-elevation earth-science-geomorphic-landforms-processes-land-surface-coastal-landforms-deltas earth-science-topography-land-surface-terrain-elevation-digital-elevation-terrain-model-dem

Complete Metadata

bureauCode	[ "026:00" ]
identifier	10.3334/ORNLDAAC/2181
landingPage	https://search.earthdata.nasa.gov/search?q=DeltaX_DEM_MRD_LA_2181&ac=true
programCode	[ "026:000" ]
spatial	[[{"WestBoundingCoordinate":-91.908,"NorthBoundingCoordinate":29.9581,"EastBoundingCoordinate":-90.149,"SouthBoundingCoordinate":28.968}],"CARTESIAN"]
temporal	2012-01-01/2012-01-01
theme	[ "Earth Science" ]