NOAA Topobathy Lidar DEM for French Frigate Shoals and Nihoa, 2021-2023

Raster topobathy data for two Hawaiian islands, created from ground and bathymetric lidar point values. The data were collected by Woolpert using a Leica Hawkeye4X system from February 7, 2021 through July 27, 2023. It is provided by the National Oceanic and Atmospheric Administration's National Geodetic Survey.

Use Cases

• Modeling coastal erosion and inundation based on combined land and underwater elevation data.
• Creating nautical charts based on detailed bathymetric seafloor topography.
• Analyzing coastal habitat changes based on high-resolution topobathy raster data.
• Planning marine construction projects based on accurate nearshore elevation models.

Strengths

• Data collection spanned over two years, from February 2021 to July 2023.
• Includes both ground (2) and bathymetric point (40) lidar point values for integrated elevation modeling.
• Acquired using a specific, named sensor system (Leica Hawkeye4X).

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and dataset size are unknown, which may limit suitability assessment.

Provenance

Source

National Oceanic and Atmospheric Administration, Department of Commerce

Collection Method

Collected by Woolpert using a Leica Hawkeye4X system via airplane.

Time Range

February 7, 2021 through July 27, 2023

Freshness

Last updated 2026-03-13 21:38:23.155514; freshness should be verified.

Geography

French Frigate Shoals and Nihoa, Hawaii, Central Pacific Ocean