2018 USACE NCMP Topobathy Lidar: Homer (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 2018 USACE NCMP Topobathy Lidar: Homer (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/lidar2_z/geoid12b/data/8686/
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 8686). 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 urllist8686.txt. More information on using uGet is in the Bulk Lidar Download GeoZone blog post.

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 1.6G.

If you need FTP access instead of HTTPS, use ftp://ftp.coast.noaa.gov/pub/DigitalCoast/lidar2_z/geoid12b/data/8686

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: ak2018_homer_metadata.html
Metadata: ak2018_homer_metadata.xml
XYZ range table: ak2018_homer_minmax.csv
README: 0README.txt (contains similar information to above)
URL List: urllist8686.txt is a list of all the URLs for batch downloading.

Supplemental Info


supplemental/index.html
supplemental/usace2018_homer_m8686.kmz

Point Cloud Data Files

20180610_NCMP_AK_05VNG7312.laz
20180610_NCMP_AK_05VNG7412.laz
20180610_NCMP_AK_05VNG7511.laz
20180610_NCMP_AK_05VNG7512.laz
20180610_NCMP_AK_05VNG7513.laz
20180610_NCMP_AK_05VNG7611.laz
20180610_NCMP_AK_05VNG7612.laz
20180610_NCMP_AK_05VNG7613.laz
20180610_NCMP_AK_05VNG7711.laz
20180610_NCMP_AK_05VNG7712.laz
20180610_NCMP_AK_05VNG7713.laz
20180610_NCMP_AK_05VNG7810.laz
20180610_NCMP_AK_05VNG7811.laz
20180610_NCMP_AK_05VNG7812.laz
20180610_NCMP_AK_05VNG7813.laz
20180610_NCMP_AK_05VNG7910.laz
20180610_NCMP_AK_05VNG7911.laz
20180610_NCMP_AK_05VNG7912.laz
20180610_NCMP_AK_05VNG7913.laz
20180610_NCMP_AK_05VNG8009.laz
20180610_NCMP_AK_05VNG8010.laz
20180610_NCMP_AK_05VNG8011.laz
20180610_NCMP_AK_05VNG8012.laz
20180610_NCMP_AK_05VNG8013.laz
20180610_NCMP_AK_05VNG8109.laz
20180610_NCMP_AK_05VNG8110.laz
20180610_NCMP_AK_05VNG8111.laz
20180610_NCMP_AK_05VNG8112.laz
20180610_NCMP_AK_05VNG8113.laz
20180610_NCMP_AK_05VNG8208.laz
20180610_NCMP_AK_05VNG8209.laz
20180610_NCMP_AK_05VNG8210.laz
20180610_NCMP_AK_05VNG8211.laz
20180610_NCMP_AK_05VNG8212.laz
20180610_NCMP_AK_05VNG8213.laz
20180610_NCMP_AK_05VNG8308.laz
20180610_NCMP_AK_05VNG8309.laz
20180610_NCMP_AK_05VNG8310.laz
20180610_NCMP_AK_05VNG8311.laz
20180610_NCMP_AK_05VNG8312.laz
20180610_NCMP_AK_05VNG8313.laz
20180610_NCMP_AK_05VNG8407.laz
20180610_NCMP_AK_05VNG8408.laz
20180610_NCMP_AK_05VNG8409.laz
20180610_NCMP_AK_05VNG8410.laz
20180610_NCMP_AK_05VNG8411.laz
20180610_NCMP_AK_05VNG8412.laz
20180610_NCMP_AK_05VNG8413.laz
20180610_NCMP_AK_05VNG8507.laz
20180610_NCMP_AK_05VNG8508.laz
20180610_NCMP_AK_05VNG8509.laz
20180610_NCMP_AK_05VNG8510.laz
20180610_NCMP_AK_05VNG8511.laz
20180610_NCMP_AK_05VNG8512.laz
20180610_NCMP_AK_05VNG8513.laz
20180610_NCMP_AK_05VNG8607.laz
20180610_NCMP_AK_05VNG8608.laz
20180610_NCMP_AK_05VNG8609.laz
20180610_NCMP_AK_05VNG8610.laz
20180610_NCMP_AK_05VNG8611.laz
20180610_NCMP_AK_05VNG8612.laz
20180610_NCMP_AK_05VNG8707.laz
20180610_NCMP_AK_05VNG8708.laz
20180610_NCMP_AK_05VNG8709.laz
20180610_NCMP_AK_05VNG8710.laz
20180610_NCMP_AK_05VNG8711.laz
20180610_NCMP_AK_05VNG8712.laz
20180610_NCMP_AK_05VNG8807.laz
20180610_NCMP_AK_05VNG8808.laz
20180610_NCMP_AK_05VNG8809.laz
20180610_NCMP_AK_05VNG8810.laz
20180610_NCMP_AK_05VNG8811.laz
20180610_NCMP_AK_05VNG8907.laz
20180610_NCMP_AK_05VNG8908.laz
20180612_NCMP_AK_05VNG7013.laz
20180612_NCMP_AK_05VNG7014.laz
20180612_NCMP_AK_05VNG7015.laz
20180612_NCMP_AK_05VNG7113.laz
20180612_NCMP_AK_05VNG7114.laz
20180612_NCMP_AK_05VNG7115.laz
20180612_NCMP_AK_05VNG7213.laz
20180612_NCMP_AK_05VNG7214.laz
20180612_NCMP_AK_05VNG7215.laz
20180612_NCMP_AK_05VNG7313.laz
20180612_NCMP_AK_05VNG7314.laz
20180612_NCMP_AK_05VNG7413.laz
20180612_NCMP_AK_05VNG7414.laz
20180612_NCMP_AK_05VNG7514.laz
20180612_NCMP_AK_05VNG8909.laz

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