2012 USGS Lidar: Brooks Camp (AK) 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 2012 USGS Lidar: Brooks Camp (AK) 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 (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/lidar1_z/geoid12b/data/4797/
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 4797). 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 urllist4797.txt. Several posts on the GeoZone blog provide help with downloading, including:

The total size to download all the files is 2.7G.

If you need FTP access instead of HTTPS, use ftp://ftp.coast.noaa.gov/pub/DigitalCoast/lidar1_z/geoid12b/data/4797

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)
                ak2012_usgs_brooks_camp_index.gpkg (GeoPackage)
Metadata: ak2012_usgs_brooks_camp_metadata.xml
Metadata: ak2012_usgs_brooks_camp_metadata.html
XYZ range table: ak2012_usgs_brooks_camp_minmax.csv
README: 0README.txt (contains similar information to above)
URL List: urllist4797.txt is a list of all the URLs for batch downloading.

Supplemental Info

supplemental/ak2012_usgs_brooks_camp_m4797.kmz
supplemental/ak2012_usgs_brooks_camp_m4797_surveyreport.pdf
supplemental/index.html

Breakline Files

breaklines/README_breaklines_m4797.txt
breaklines/ak2012_brookscamp_breaklines.zip

Point Clouds

Subdirectories

breaklines

Point Cloud Data Files

BrooksCampAK_01.laz
BrooksCampAK_21.laz
BrooksCampAK_41.laz
BrooksCampAK_40.laz
BrooksCampAK_39.laz
BrooksCampAK_38.laz
BrooksCampAK_37.laz
BrooksCampAK_20.laz
BrooksCampAK_19.laz
BrooksCampAK_36.laz
BrooksCampAK_18.laz
BrooksCampAK_35.laz
BrooksCampAK_34.laz
BrooksCampAK_33.laz
BrooksCampAK_17.laz
BrooksCampAK_32.laz
BrooksCampAK_16.laz
BrooksCampAK_31.laz
BrooksCampAK_15.laz
BrooksCampAK_14.laz
BrooksCampAK_30.laz
BrooksCampAK_29.laz
BrooksCampAK_13.laz
BrooksCampAK_28.laz
BrooksCampAK_12.laz
BrooksCampAK_27.laz
BrooksCampAK_11.laz
BrooksCampAK_26.laz
BrooksCampAK_25.laz
BrooksCampAK_24.laz
BrooksCampAK_23.laz
BrooksCampAK_10.laz
BrooksCampAK_22.laz
BrooksCampAK_09.laz
BrooksCampAK_08.laz
BrooksCampAK_07.laz
BrooksCampAK_06.laz
BrooksCampAK_05.laz
BrooksCampAK_04.laz
BrooksCampAK_03.laz
BrooksCampAK_02.laz

This page is owned by the NOAA Office for Coastal Management and was created by an automated script on Wed Feb 10 03:44:17 EST 2021