2014 OLC FEMA Lidar: Sitka, 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 2014 OLC FEMA Lidar: Sitka, 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/8544/
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 8544). 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 urllist8544.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 3.0G.

If you need FTP access instead of HTTPS, use ftp://ftp.coast.noaa.gov/pub/DigitalCoast/lidar2_z/geoid12b/data/8544

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: ak2014_sitka_m8544_metadata.html
Metadata: ak2014_sitka_m8544_metadata.xml
XYZ range table: ak2014_sitka_m8544_minmax.csv
README: 0README.txt (contains similar information to above)
URL List: urllist8544.txt is a list of all the URLs for batch downloading.

Supplemental Info


supplemental/ak2014_sitka_m8544.kmz
supplemental/ak2014_sitka_m8544_lidar_report.pdf
supplemental/index.html

Point Cloud Data Files

57135A2121A.laz
57135A2121B.laz
57135A2122.laz
57135A2301.laz
57135A2302.laz
57135A2303.laz
57135A2306A.laz
57135A2306B.laz
57135A2306C.laz
57135A2307.laz
57135A2308.laz
57135A2309.laz
57135A2310.laz
57135A2311A.laz
57135A2311B.laz
57135A2312A.laz
57135A2312B.laz
57135A2313.laz
57135A2314.laz
57135A2315.laz
57135A2316A.laz
57135A2316B.laz
57135A2401.laz
57135A2402.laz
57135A2406.laz
57135A2407.laz
57135A2411.laz
57135A3102.laz
57135A3103.laz
57135A3104.laz
57135A3107.laz
57135A3108.laz
57135A3109.laz
57135A3110.laz
57135A3112A.laz
57135A3112B.laz
57135A3113.laz
57135A3114.laz
57135A3115.laz
57135A3118.laz
57135A3119.laz
57135A3120A.laz
57135A3120B.laz
57135A3202.laz
57135A3203.laz
57135A3204.laz
57135A3206.laz
57135A3207.laz
57135A3208.laz
57135A3211A.laz
57135A3211B.laz
57135A3212.laz
57135A3213.laz
57135A3216.laz
57135A3217A.laz
57135A3217B.laz
57135A3218.laz
57135A3219.laz
57135A3221A.laz
57135A3221B.laz
57135A3223A.laz
57135A3223B.laz
57135A3224.laz
57135A3225.laz
57135A3403.laz
57135A3404.laz
57135A3405.laz
57135A3408.laz
57135A3409.laz
57135A3410A.laz
57135A3410B.laz
57135A3410C.laz
57135A3410D.laz
57135A3415A.laz
57135A3415B.laz
57135A3415C.laz
57135A3420.laz
57135B3422.laz
57135B3423.laz
57135B3424.laz

This page is owned by the NOAA Office for Coastal Management and was created by an automated script on Thu Oct 8 09:04:34 EDT 2020