NOAA Topobathymetric Lidar DEM: Angelica to Dameron, MD, 2019

492.737 square kilometers of topobathymetric lidar data covering a portion of the Chesapeake Bay in Maryland. The data were collected by NV5 Geospatial, Inc. using a Riegl VQ-880-GH system across nine missions between March 12 and April 19, 2019. The final product includes 38 digital elevation models (DEMs) with 1-meter pixel resolution, derived from classified point clouds with ground, bathymetric bottom, and water column labels.

Use Cases

• Modeling coastal erosion and sediment transport based on detailed ground and bathymetric elevation data.
• Analyzing submerged topography and object detection based on classifications for bathymetric bottom and submerged objects.
• Creating high-resolution coastal habitat maps based on the 1-meter pixel resolution DEMs.
• Studying water column properties and coastal dynamics based on the classified point data including water column points.

Strengths

• Covers approximately 492.737 square kilometers with detailed topobathymetric data.
• Includes 38 final digital elevation models (DEMs) with a high 1-meter pixel resolution.
• Point data is classified according to ASPRS standards, including ground, bathymetric bottom, and water column.
• Data collection spanned nine missions over a defined period from March to April 2019.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment for large-scale statistical modeling.

Provenance

Source

National Oceanic and Atmospheric Administration, Department of Commerce

Collection Method

Collected via airborne Riegl VQ-880-GH lidar system by NV5 Geospatial, Inc.

Time Range

2019-03 2019-04

Freshness

Last updated 2026-03-13 21:48:43.065450; freshness should be verified.

Geography

Portion of the Chesapeake Bay and nearby census designated places in Maryland, USA.