2008 USACE NCMP Topobathy Lidar: Lake Superior (MI) 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 2008 USACE NCMP Topobathy Lidar: Lake Superior (MI) 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/2517/
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 2517). 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 urllist2517.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 67 LAZ files and the summary class table is:
Class NumberClass NamePoints
1Unclassified416310647
11Green Laser returns46304315

If you need FTP access instead of HTTPS, use ftp://ftp.coast.noaa.gov/pub/DigitalCoast/lidar4_z/geoid18/data/2517

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)
                mi2008_usace_lakesuperior_index.gpkg (GeoPackage)
Metadata: mi2008_usace_lakesuperior_metadata.xml
Metadata: mi2008_usace_lakesuperior_metadata.html
XYZ range table: mi2008_usace_lakesuperior_minmax.csv
README: 0README.txt (contains similar information to above)
URL List: urllist2517.txt is a list of all the URLs for batch downloading.

Supplemental Info

supplemental/2008_USACE_Great_Lakes_TopoBathy_Lidar_MI_Lake_Superior.KMZ
supplemental/index.html

Point Clouds

2008_NCMP_WI_SUPE_12_TL.laz
2008_NCMP_MI_SUPE_82_H.laz
2008_NCMP_MI_SUPE_18_H.laz
2008_NCMP_MI_Superior_22_H.laz
2008_NCMP_MI_SUPE_17_TL.laz
2008_NCMP_MI_SUPE_81_TL.laz
2008_NCMP_MI_Superior_21_TL.laz
2008_NCMP_MI_Superior_21_H.laz
2008_NCMP_MI_Superior_20_TL.laz
2008_NCMP_MI_Superior_20_H.laz
2008_NCMP_WI_SUPE_12_H.laz
2008_NCMP_MI_SUPE_81_H.laz
2008_NCMP_MI_SUPE_89_TL.laz
2008_NCMP_WI_SUPE_11_TL.laz
2008_NCMP_MI_SUPE_80_TL.laz
2008_NCMP_MI_SUPE_17_H.laz
2008_NCMP_MI_SUPE_16_TL.laz
2008_NCMP_MI_SUPE_89_H.laz
2008_NCMP_MI_SUPE_88_TL.laz
2008_NCMP_MI_SUPE_80_H.laz
2008_NCMP_MI_SUPE_79_TL.laz
2008_NCMP_MI_SUPE_16_H.laz
2008_NCMP_MI_SUPE_15_TL.laz
2008_NCMP_MI_SUPE_88_H.laz
2008_NCMP_MI_SUPE_87_TL.laz
2008_NCMP_MI_SUPE_15_H.laz
2008_NCMP_WI_SUPE_11_H.laz
2008_NCMP_WI_SUPE_10_TL.laz
2008_NCMP_MI_SUPE_79_H.laz
2008_NCMP_MI_SUPE_78_TL.laz
2008_NCMP_MI_SUPE_87_H.laz
2008_NCMP_WI_SUPE_10_H.laz
2008_NCMP_MI_Superior_43_TL.laz
2008_NCMP_MI_SUPE_86_TL.laz
2008_NCMP_MI_Superior_43_H.laz
2008_NCMP_MI_Superior_42_TL.laz
2008_NCMP_MI_Superior_42_H.laz
2008_NCMP_MI_SUPE_78_H.laz
2008_NCMP_MI_SUPE_77_TL.laz
2008_NCMP_MI_Superior_41_TL.laz
2008_NCMP_MI_SUPE_86_H.laz
2008_NCMP_MI_Superior_41_H.laz
2008_NCMP_MI_SUPE_85_TL.laz
2008_NCMP_MI_Superior_26_TL.laz
2008_NCMP_MI_Superior_25_TL.laz
2008_NCMP_MI_Superior_25_H.laz
2008_NCMP_MI_Superior_24_TL.laz
2008_NCMP_MI_Superior_24_H.laz
2008_NCMP_MI_Superior_23_TL.laz
2008_NCMP_MI_Superior_23_H.laz
2008_NCMP_MI_SUPE_77_H.laz
2008_NCMP_MI_SUPE_85_H.laz
2008_NCMP_MI_SUPE_84_TL.laz
2008_NCMP_MI_SUPE_76_TL.laz
2008_NCMP_MI_Superior_22_TL.laz
2008_NCMP_MI_SUPE_84_H.laz
2008_NCMP_MI_SUPE_83_TL.laz
2008_NCMP_MI_SUPE_76_H.laz
2008_NCMP_MI_SUPE_75_TL.laz
2008_NCMP_MI_SUPE_83_H.laz
2008_NCMP_MI_SUPE_82_TL.laz
2008_NCMP_MI_SUPE_75_H.laz
2008_NCMP_MI_SUPE_74_TL.laz
2008_NCMP_MI_SUPE_74_H.laz
2008_NCMP_MI_SUPE_73_TL.laz
2008_NCMP_MI_SUPE_73_H.laz
2008_NCMP_MI_SUPE_18_TL.laz

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