2001 SRWMD Bare Earth Lidar: Alachua (FL) 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 2001 SRWMD Bare Earth Lidar: Alachua (FL) 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/lidar1_z/geoid18/data/4896/
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 4896). 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 urllist4896.txt. Several posts on the GeoZone blog provide help with downloading, including:

The total size to download all the files is 467M. There are 60 LAZ files and the summary class table is:
Class NumberClass NamePoints
2Ground138353604

If you need FTP access instead of HTTPS, use ftp://ftp.coast.noaa.gov/pub/DigitalCoast/lidar1_z/geoid18/data/4896

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)
                fl2001_srwmd_alachua_index.gpkg (GeoPackage)
Metadata: fl2001_srwmd_alachua_metadata.xml
Metadata: fl2001_srwmd_alachua_metadata.html
XYZ range table: fl2001_srwmd_alachua_minmax.csv
README: 0README.txt (contains similar information to above)
URL List: urllist4896.txt is a list of all the URLs for batch downloading.

Supplemental Info

supplemental/fl2001_srwmd_alachua_m4896.kmz
supplemental/index.html

Breakline Files

breaklines/README_breaklines_m4896.txt
breaklines/fl2001_srwmd_alachua_m4896_breaklines.zip
breaklines/index.html

Point Clouds

alachua_srwmd_2001_27.laz
alachua_srwmd_2001_9.laz
alachua_srwmd_2001_45.laz
alachua_srwmd_2001_26.laz
alachua_srwmd_2001_44.laz
alachua_srwmd_2001_8.laz
alachua_srwmd_2001_43.laz
alachua_srwmd_2001_42.laz
alachua_srwmd_2001_25.laz
alachua_srwmd_2001_7.laz
alachua_srwmd_2001_41.laz
alachua_srwmd_2001_24.laz
alachua_srwmd_2001_60.laz
alachua_srwmd_2001_6.laz
alachua_srwmd_2001_59.laz
alachua_srwmd_2001_58.laz
alachua_srwmd_2001_57.laz
alachua_srwmd_2001_56.laz
alachua_srwmd_2001_55.laz
alachua_srwmd_2001_40.laz
alachua_srwmd_2001_54.laz
alachua_srwmd_2001_23.laz
alachua_srwmd_2001_53.laz
alachua_srwmd_2001_4.laz
alachua_srwmd_2001_39.laz
alachua_srwmd_2001_22.laz
alachua_srwmd_2001_21.laz
alachua_srwmd_2001_52.laz
alachua_srwmd_2001_20.laz
alachua_srwmd_2001_38.laz
alachua_srwmd_2001_51.laz
alachua_srwmd_2001_2.laz
alachua_srwmd_2001_37.laz
alachua_srwmd_2001_36.laz
alachua_srwmd_2001_50.laz
alachua_srwmd_2001_19.laz
alachua_srwmd_2001_35.laz
alachua_srwmd_2001_5.laz
alachua_srwmd_2001_49.laz
alachua_srwmd_2001_18.laz
alachua_srwmd_2001_34.laz
alachua_srwmd_2001_48.laz
alachua_srwmd_2001_33.laz
alachua_srwmd_2001_17.laz
alachua_srwmd_2001_47.laz
alachua_srwmd_2001_32.laz
alachua_srwmd_2001_16.laz
alachua_srwmd_2001_46.laz
alachua_srwmd_2001_31.laz
alachua_srwmd_2001_15.laz
alachua_srwmd_2001_30.laz
alachua_srwmd_2001_3.laz
alachua_srwmd_2001_14.laz
alachua_srwmd_2001_29.laz
alachua_srwmd_2001_13.laz
alachua_srwmd_2001_28.laz
alachua_srwmd_2001_12.laz
alachua_srwmd_2001_11.laz
alachua_srwmd_2001_10.laz
alachua_srwmd_2001_1.laz

This page is owned by the NOAA Office for Coastal Management and was created by an automated script on Fri Sep 3 07:19:23 EDT 2021