2010 Lidar Point Clouds for Laysan Island, Northwestern Hawaiian Islands

The U.S. Geological Survey and NOAA contracted Aerial Surveying, Inc. to collect lidar-derived elevation data over low-lying areas in the northwestern Hawaiian Islands during summer 2010. The dataset for Laysan Island contains classified point clouds in LAS 1.2 format, with points categorized as Unclassified, Ground, or Water. In April 2011, NOAA deployed a survey crew to collect high-accuracy GPS points to validate the lidar data.

Use Cases

• Modeling sea level rise impacts based on high-resolution digital elevation models.
• Conducting coastal habitat assessments using classified ground and water points.
• Simulating tsunami inundation scenarios from elevation data.
• Validating remote sensing data with ground-truth GPS survey points.

Strengths

• Data collected with specific aircraft (Beechcraft Queen Air) and lidar systems (Riegl 140 and 240).
• Point clouds are classified to ASPRS standards (Class 1: Unclassified, Class 2: Ground, Class 9: Water).
• Includes validation data from a NOAA survey crew using survey-grade GPS in April 2011.

Limitations

• Description metadata is limited; actual data quality requires manual inspection after download.
• Column-level documentation is absent; field semantics must be inferred after download.
• Accuracy is stated for open terrain; derived products may be less accurate in areas of extreme terrain and dense vegetation.

Provenance

Source

National Oceanic and Atmospheric Administration, Department of Commerce, and U.S. Geological Survey.

Collection Method

Airborne lidar survey and subsequent ground validation with GPS.

Time Range

Primary data collection in summer 2010, with validation in April 2011.

Freshness

Last updated 2026-03-13 22:18:14.931996; freshness should be verified.

Geography

Laysan Island, within the northwestern Hawaiian Islands.