Post-Hurricane Ida Topobathymetric Lidar DEM for Coastal Louisiana, 2022

Louisiana coastal elevation and seafloor data collected by the NOAA National Geodetic Survey using airborne lidar. The dataset includes raster topobathy data derived from ground, bathymetric point, and submerged object lidar point values. Data acquisition occurred between October 4 and October 21, 2022, following Hurricane Ida.

Use Cases

• Model coastal erosion and sediment transport based on combined topographic and bathymetric elevation data.
• Assess hurricane impact on shoreline and nearshore environments using post-event terrain models.
• Update nautical charts and coastal navigation aids based on submerged object and seafloor topography data.
• Analyze flood risk and storm surge inundation using detailed post-storm elevation models.

Strengths

• Data integrates three distinct lidar point classes: ground, bathymetric point, and submerged object.
• Acquisition timeframe is precisely documented from October 4 to October 21, 2022.
• Produced by the authoritative NOAA National Geodetic Survey and National Ocean Service.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and file size are unknown, which may limit suitability assessment.
• Data may reflect geographic and temporal bias specific to the post-hurricane survey window.

Provenance

Source

National Oceanic and Atmospheric Administration, Department of Commerce

Collection Method

Collected by Woolpert using a Leica Chiroptera 4X airborne lidar sensor.

Time Range

2022-10-04 to 2022-10-21

Freshness

Last updated 2026-03 13 21:31:37.432704; freshness should be verified.

Geography

Coastal Louisiana, United States, North America