2009 USACE NCMP Topobathy Lidar: Atlantic Coast (NC, VA) Point Cloud files with Orthometric Vertical Datum North American Vertical Datum of 1988 (NAVD88) using GEOID18

Below are links to the files that make up the 2009 USACE NCMP Topobathy Lidar: Atlantic Coast (NC, VA) dataset in an orthometric vertical datum North American Vertical Datum of 1988 (NAVD88) using GEOID18. 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 (note: sufficiently new and trusted pre-compiled Windows versions can be hard to find):
wget -np -r -nH -L --cut-dirs=2 https://chs.coast.noaa.gov/htdata/lidar4_z/geoid18/data/8609/
This will give you the directory structure starting with geoid18. Modify the --cut-dirs=2 argument to modify the start directory (e.g. --cut-dirs=4 will start at 8609). 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". Windows users may want to install the Windows Subsystem for Linux to get a current wget.

You can also use the uGet program with the list of URLs in file urllist8609.txt. Several posts on the GeoZone blog provide help with downloading, including:

The total size to download all the files is 1.5G. There are 62 LAZ files and the summary class table is:
Class NumberClass NamePoints
1Unclassified256541804
2Ground158268964
29Bathymetric point54154644

If you need FTP access instead of HTTPS, use ftp://ftp.coast.noaa.gov/pub/DigitalCoast/lidar4_z/geoid18/data/8609

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)
                usace2009_nc_va_index.gpkg (GeoPackage)
Metadata: usace2009_nc_va_metadata.xml
Metadata: usace2009_nc_va_metadata.html
XYZ range table: usace2009_nc_va_minmax.csv
README: 0README.txt (contains similar information to above)
URL List: urllist8609.txt is a list of all the URLs for batch downloading.

Supplemental Info

supplemental/index.html
supplemental/usace2009_nc_va_m8609.kmz

Point Clouds

NCMP_NC_54.laz
20090817_NCMP_NC_19.laz
20090816_NCMP_NC_02.laz
20090822_NCMP_NC_33.laz
20090817_NCMP_NC_18.laz
NCMP_NC_53.laz
20090822_NCMP_NC_32.laz
NCMP_NC_52.laz
20090822_NCMP_NC_31.laz
NCMP_NC_51.laz
20090817_NCMP_NC_17.laz
20090816_NCMP_NC_01.laz
NCMP_NC_50.laz
20090822_NCMP_NC_30.laz
NCMP_NC_49.laz
20090817_NCMP_NC_16.laz
NCMP_NC_48.laz
20090820_NCMP_NC_23.laz
NCMP_NC_47.laz
20090817_NCMP_NC_15.laz
NCMP_NC_46.laz
20090819_NCMP_NC_27.laz
NCMP_NC_45.laz
NCMP_NC_44.laz
20090819_NCMP_NC_26.laz
20090817_NCMP_NC_14.laz
NCMP_NC_43.laz
NCMP_NC_42.laz
20090817_NCMP_NC_13.laz
20090819_NCMP_NC_25.laz
NCMP_NC_41.laz
20090819_NCMP_NC_24.laz
NCMP_NC_40.laz
20090817_NCMP_NC_12.laz
20090818_NCMP_NC_21.laz
NCMP_NC_39.laz
20090818_NCMP_NC_20.laz
NCMP_NC_38.laz
20090817_NCMP_NC_11.laz
20090818_NCMP_NC_07.laz
NCMP_NC_37.laz
20090818_NCMP_NC_06.laz
20090817_NCMP_NC_10.laz
20090822_NCMP_NC_35.laz
20090822_NCMP_NC_34.laz
20090818_NCMP_NC_05.laz
20090817_NCMP_NC_09.laz
20090818_NCMP_NC_04.laz
20090817_NCMP_NC_08.laz
20090816_NCMP_VA_36.laz
20090818_NCMP_NC_03.laz
20090817_NCMP_NC_36.laz
20090816_NCMP_VA_35.laz
20090817_NCMP_NC_29.laz
20090817_NCMP_NC_28.laz
20090816_NCMP_VA_34.laz
20090817_NCMP_NC_22.laz
20090816_NCMP_VA_33.laz
20090816_NCMP_VA_32.laz
20090816_NCMP_VA_31.laz
20090816_NCMP_VA_30.laz
20090816_NCMP_VA_29.laz

This page is owned by the NOAA Office for Coastal Management and was created by an automated script on Fri Sep 3 07:33:18 EDT 2021