Description
Original Product: These lidar data are processed Classified LAS 1.4 files, formatted to 2139 individual 1250 ft x 1250 ft tiles clipped to the DPA; used to create intensity images, 3D breaklines, and hydro-flattened DEMs as necessary.
Original Dataset Geographic Extent: Cook county, Illinois; Lake, LaPorte, and Porter counties, Indiana; and Berrien county, Michigan; covering approximately 120 square miles.
Original Dataset Description: The lidar project called for the planning, acquisition, processing, and derivative products of lidar data to be collected at a nominal pulse spacing (NPS) of 0.35 meters. Project specifications are based on the U.S. Geological Survey National Geospatial Program Base Lidar Specification. The data was developed based on a horizontal projection/datum of NAD83(HARN), Indiana West Feet, and vertical datum of NAVD88 (GEOID18) Feet. Lidar data was delivered as processed Classified LAS 1.4 files, formatted to 2139 individual 1250 ft x 1250 ft tiles clipped to the DPA, as tiled Intensity Images and tiled bare-earth DEMs; all tiled to the same 1250 ft x 1250 ft schema.
Original Dataset Ground Conditions: Lidar was collected in April 2024, while no snow was on the ground and rivers were at or below normal levels. Sanborn Map Company, Inc. established a total of 25 accuracy check points, 20 in Bare Earth and Urban landcovers (20 NVA points), 5 in Tall Grass and Brushland/Low Trees categories (5 VVA points), that were used to assess the vertical accuracy of the data.
This dataset was provided to the NOAA Office for Coastal Management (OCM) by the Indiana Dept. of Natural Resources to make the data available for bulk and custom downloads from the NOAA Digital Coast Data Access Viewer.
Resources
| Name | Format | Description | Link |
|---|---|---|---|
| NOAA Office for Coastal Management Website | Unknown | NOAA Office for Coastal Management Home Page | Open resource |
| NOAA Office for Coastal Management Website | Unknown | NOAA Office for Coastal Management Home Page | Open resource |
| NOAA's Office for Coastal Management (OCM) Data Access Viewer (DAV) | Unknown | The Data Access Viewer (DAV) allows a user to search for and download elevation, imagery, and land cover data for the coastal U.S. and its territories. The data, hosted by the NOAA Office for Coastal Management, can be customized and requested for free download through a checkout interface. An email provides a link to the customized data, while the original data set is available through a link within the viewer. | Open resource |
| Customized Download | Unknown | Create custom data files by choosing data area, product type, map projection, file format, datum, etc. A new metadata will be produced to reflect your request using this record as a base. Change to an orthometric vertical datum is one of the many options. | |
| Potree 3D View | JSON | Link to view the point cloud (using the Entwine Point Tile (EPT) format) in the 3D Potree viewer. | Open resource |
| GCMD Keyword Forum Page | Unknown | Global Change Master Directory (GCMD). 2024. GCMD Keywords, Version 19. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords | Open resource |
| Entwine Point Tile (EPT) | JSON | Entwine Point Tile (EPT) is a simple and flexible octree-based storage format for point cloud data. The data is organized in such a way that the data can be reasonably streamed over the internet, pulling only the points you need. EPT files can be queried to return a subset of the points that give you a representation of the area. As you zoom further in, you are requesting higher and higher densities. A dataset in EPT will contain a lot of files, however, the ept.json file describes all the rest. The EPT file can be used in Potree and QGIS to view the point cloud. | Open resource |
| Breaklines | HTML | Link to the breaklines in Esri gdb and OGC GeoPackage formats. | Open resource |
| Bulk Download | HTML | Bulk download of data files in LAZ format, UTM NAD83(2011) meters coordinates, and elevations in NAVD88(GEOID18) meters. Note that the vertical datum (hence elevations) of the files here are different than described in this document. They will be in an orthometric datum. | Open resource |
| Lidar Report | Link to the lidar report. | Open resource | |
| Full Metadata Record | Unknown | View the complete metadata record on InPort for more information about this dataset. | Open resource |
| NOAA Data Management Plan (DMP) | NOAA Data Management Plan for this record on InPort. | Open resource |
Tags
- airplane
- coastal elevation
- coastal processes
- continent
- doc/noaa/nos/ocm
- earth science
- indiana
- land surface
- lidar
- light detection and ranging
- national ocean service
- noaa
- north america
- oceans
- office of coastal management
- terrain elevation
- topography
- united states of america
- u.s. department of commerce
- vertical location