2013 - 2014 USGS CMGP Lidar: Post Sandy (New York City) Point Cloud files with Orthometric Vertical Datum North American Vertical Datum of 1988 (NAVD88) using GEOID12B

Below are links to the files that make up the 2013 - 2014 USGS CMGP Lidar: Post Sandy (New York City) dataset in an orthometric vertical datum North American Vertical Datum of 1988 (NAVD88) using GEOID12B. This HTML file is here to emulate the access you would have gotten through an ftp site. The files containing geospatial indices, metadata, etc., are listed first, followed by the files. To download in bulk, it is suggested you use a program such as wget (example below). The geospatial index file in shapefile format also has a URL attribute that some GIS programs can use to download files. You can also subset the data, make derived products, and change projection, datum, etc., using the Digital Coast Data Access Viewer (add to cart, the link to bulk download or LAZ fmt will take you here).

The files are in LAZ format, a lossless compressed version of the ASPRS LAS format. The compression and decompression is done with the free and open source 'laszip' program available at http://laszip.org. This is not the same as the more general zip format. Many geospatial programs will read LAZ files natively and decompression is often not necessary. There is a list of software with native support on the laszip site.

Example to download entire data set using wget (windows version at http://gnuwin32.sourceforge.net/packages/wget.htm):
wget -np -r -nH -L --cut-dirs=2 https://coast.noaa.gov/htdata/lidar1_z/geoid12b/data/4920/
This will give you the directory structure starting with geoid12b. Modify the --cut-dirs=2 argument to modify the start directory (e.g. --cut-dirs=4 will start at 4920). Wget is a command-line program and the output will be to the directory you run it in. More options and information can be found at http://www.gnu.org/software/wget/manual/wget.html. The other options in the example mean:


If you have problems with wget that look like an authorization or certificate issue, you may need to add the option "--no-check-certificate". You can also use the uget program with the list of URLs in file urllist4920.txt

To download only a subset of the files based on a polygon, see this GeoZone blog post.

The total size to download all the files is 24G.

If you need FTP access instead of HTTPS, use ftp://ftp.coast.noaa.gov/pub/DigitalCoast/lidar1_z/geoid12b/data/4920

Georeferencing Note

You may find the georeferencing on the files refers to generic NAD83 (EPSG code 4269). All files, with the exception of the few in WGS84, are in a more recent realization of NAD83 such as NAD83(CORS96), NAD83(HARN), NAD83(NSRS2007), or NAD83(2011).

Meta Info


Tile Index: tileindex.zip (Shapefile)
Metadata: ny2014_usgs_cmgp_sandy_nyc_m4920_metadata.xml
XYZ range table: ny2014_usgs_cmgp_sandy_nyc_m4920_minmax.csv
README: 0README.txt (contains similar information to above)
URL List: urllist4920.txt

Supplemental Info


supplemental/ny2014_usgs_cmgp_sandy_nyc_m4920.kmz
supplemental/index.html
supplemental/breaklines
supplemental/breaklines/ny2014_usgs_cmgp_sandy_nyc_m4920.zip
supplemental/Lidar_Rpt_NYSandy_Lidar_October_2014.pdf
supplemental/NY_CMGP_Sandy_Lidar_Survey_Control_Report_final.pdf

Point Cloud Data Files

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This page is owned by the NOAA Office for Coastal Management and was created by an automated script on Tue Apr 30 13:33:36 EDT 2019