2016 OLC Lidar: Milton Freewater, OR 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 2016 OLC Lidar: Milton Freewater, OR 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/lidar3_z/geoid18/data/8851/
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 8851). 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 urllist8851.txt. Several posts on the GeoZone blog provide help with downloading, including:

The total size to download all the files is 63G. There are 834 LAZ files and the summary class table is:
Class NumberClass NamePoints
1Unclassified6835901801
2Ground2083710624

If you need FTP access instead of HTTPS, use ftp://ftp.coast.noaa.gov/pub/DigitalCoast/lidar3_z/geoid18/data/8851

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)
                2016_milton_lidar_index.gpkg (GeoPackage)
Metadata: 2016_milton_lidar_metadata.xml
Metadata: 2016_milton_lidar_metadata.html
XYZ range table: 2016_milton_lidar_minmax.csv
README: 0README.txt (contains similar information to above)
URL List: urllist8851.txt is a list of all the URLs for batch downloading.

Supplemental Info

supplemental/2016_milton_freewater_area_m8851.kmz
supplemental/OLC_Milton-Freewater_2016_Acceptance_Report.pdf
supplemental/OLC_Milton_Freewater_2016_Report.pdf
supplemental/index.html

Point Clouds

Subdirectories

45118E3
45118E6
45118E7
45118E8
45118F3
45118F4
45118F5
45118F6
45118F7
45118F8
45118G3
45118G4
45118G5
45118G6
45118H3
45118H4
45119F1
45119F2
45119F3
45119G2
45119G3
45119G4
45119H3
45119H4

This page is owned by the NOAA Office for Coastal Management and was created by an automated script on Fri Sep 3 07:28:19 EDT 2021