2011 NOAA Lidar Point Cloud for Great Bay and Portsmouth Harbor, New Hampshire

2011 topographic lidar data collected by the NOAA National Geodetic Survey Remote Sensing Division using a Riegl Q680i-D system. The data includes classified point clouds in LAS 1.2 format with intensity values and encoded RGB image values. It covers the Great Bay and Portsmouth Harbor area in New Hampshire.

Use Cases

• Generate high-resolution digital elevation models based on ground-classified points.
• Analyze coastal topography and bathymetry based on classified ground and water points.
• Fuse intensity and RGB values for land cover classification based on encoded image data.

Strengths

• Data collected by NOAA's National Geodetic Survey, an authoritative source.
• Points classified to ASPRS standards (unclassified, ground, water).
• Includes both lidar intensity values and encoded RGB image values.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data is from 2011; freshness should be verified for current applications.

Provenance

Source

National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), National Geodetic Survey (NGS), Remote Sensing Division

Collection Method

Collected using a Riegl Q680i-D lidar system.

Time Range

2011

Freshness

Last updated 2026-03-13 21:18:08.721965; freshness should be verified

Geography

Great Bay and Portsmouth Harbor, New Hampshire, United States