2006 TWDB Lidar: Galveston County Point Cloud files with Orthometric Vertical Datum NAVD88 using GEOID12A

Below are links to the files that make up the 2006 TWDB Lidar: Galveston County dataset in an orthometric vertical datum NAVD88 using GEOID12A. 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 (windows version at http://gnuwin32.sourceforge.net/packages/wget.htm):
wget -np -r -nH -L --cut-dirs=2 https://coast.noaa.gov/htdata/lidar1_z/geoid12a/data/89/
This will give you the directory structure starting with geoid12a. Modify the --cut-dirs=2 argument to modify the start directory (e.g. --cut-dirs=4 will start at 89). 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".

The total size to download all the files is 2.6G.

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
Metadata: 2006_TX_Galveston_metadata.html
Metadata: 2006_TX_Galveston_metadata.xml
XYZ range table: 2006_TX_Galveston_minmax.csv

Supplemental Info


supplemental/GalvestonCounty_factsheet.pdf
supplemental/index.html
supplemental/2006_TWDB_Lidar_Galveston_County.kmz

Point Cloud Data Files

20060901_u299425_3_c_la_ld_p26.laz
20060901_u299425_3_d_la_ld_p26.laz
20060901_u299425_4_c_la_ld_p26.laz
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20060901_u299428_3_c_la_ld_p26.laz
20060901_u299428_3_d_la_ld_p26.laz
20060901_u299428_4_c_la_ld_p26.laz
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20060901_u299429_1_d_la_ld_p26.laz
20060901_u299429_2_a_la_ld_p26.laz
20060901_u299429_2_b_la_ld_p26.laz
20060901_u299429_2_c_la_ld_p26.laz
20060901_u299429_2_d_la_ld_p26.laz
20060901_u299429_3_a_la_ld_p26.laz
20060901_u299429_3_b_la_ld_p26.laz
20060901_u299429_3_c_la_ld_p26.laz
20060901_u299429_3_d_la_ld_p26.laz
20060901_u299429_4_a_la_ld_p26.laz
20060901_u299429_4_b_la_ld_p26.laz
20060901_u299429_4_c_la_ld_p26.laz
20060901_u299430_1_b_la_ld_p26.laz
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20060901_u299430_3_b_la_ld_p26.laz
20060901_u299433_1_a_la_ld_p26.laz
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20060901_u299434_4_c_la_ld_p26.laz
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20060901_u299435_1_d_la_ld_p26.laz
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20060901_u299435_3_a_la_ld_p26.laz
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20060901_u299435_4_b_la_ld_p26.laz
20060901_u299436_1_a_la_ld_p26.laz
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20060901_u299436_1_c_la_ld_p26.laz
20060901_u299436_2_a_la_ld_p26.laz
20060901_u299436_2_b_la_ld_p26.laz
20060901_u299441_1_a_la_ld_p26.laz
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20060901_u299441_2_b_la_ld_p26.laz
20060901_u299441_2_c_la_ld_p26.laz
20060901_u299441_2_d_la_ld_p26.laz
20060901_u299441_3_a_la_ld_p26.laz
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20060901_u299441_4_a_la_ld_p26.laz
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20060901_u299442_1_a_la_ld_p26.laz
20060901_u299442_1_b_la_ld_p26.laz
20060901_u299442_1_d_la_ld_p26.laz
20060901_u299442_2_a_la_ld_p26.laz
20060901_u299442_2_b_la_ld_p26.laz
20060901_u299442_2_c_la_ld_p26.laz
20060901_u299442_2_d_la_ld_p26.laz
20060901_u299442_3_a_la_ld_p26.laz
20060901_u299442_3_b_la_ld_p26.laz
20060901_u299442_3_c_la_ld_p26.laz
20060901_u299442_3_d_la_ld_p26.laz
20060901_u299442_4_a_la_ld_p26.laz
20060901_u299442_4_b_la_ld_p26.laz
20060901_u299442_4_c_la_ld_p26.laz
20060901_u299443_1_a_la_ld_p26.laz
20060901_u299443_1_b_la_ld_p26.laz
20060901_u299443_1_c_la_ld_p26.laz
20060901_u299443_2_b_la_ld_p26.laz
20060901_u299449_1_a_la_ld_p26.laz
20060901_u299449_1_c_la_ld_p26.laz
20060901_u299449_1_d_la_ld_p26.laz
20060901_u299449_2_a_la_ld_p26.laz
20060901_u299449_2_b_la_ld_p26.laz
20060901_u299449_2_c_la_ld_p26.laz
20060901_u299449_3_a_la_ld_p26.laz
20060901_u299449_3_b_la_ld_p26.laz
20060901_u299450_1_b_la_ld_p26.laz
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20060901_u299531_3_b_la_ld_p26.laz
20060901_u299531_3_c_la_ld_p26.laz
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20060901_u299532_3_a_la_ld_p26.laz
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20060901_u299532_3_d_la_ld_p26.laz
20060901_u299532_4_a_la_ld_p26.laz
20060901_u299532_4_b_la_ld_p26.laz
20060901_u299532_4_c_la_ld_p26.laz
20060901_u299532_4_d_la_ld_p26.laz
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20060901_u299539_1_b_la_ld_p26.laz
20060901_u299539_1_c_la_ld_p26.laz
20060901_u299539_1_d_la_ld_p26.laz
20060901_u299539_2_a_la_ld_p26.laz
20060901_u299539_2_b_la_ld_p26.laz
20060901_u299539_2_c_la_ld_p26.laz
20060901_u299539_2_d_la_ld_p26.laz
20060901_u299539_3_a_la_ld_p26.laz
20060901_u299539_3_d_la_ld_p26.laz
20060901_u299539_4_a_la_ld_p26.laz
20060901_u299539_4_b_la_ld_p26.laz
20060901_u299539_4_c_la_ld_p26.laz
20060901_u299539_4_d_la_ld_p26.laz
20060901_u299540_1_a_la_ld_p26.laz
20060901_u299540_1_b_la_ld_p26.laz
20060901_u299540_1_c_la_ld_p26.laz
20060901_u299540_1_d_la_ld_p26.laz
20060901_u299540_2_a_la_ld_p26.laz
20060901_u299540_2_b_la_ld_p26.laz
20060901_u299540_2_c_la_ld_p26.laz
20060901_u299540_2_d_la_ld_p26.laz
20060901_u299540_3_a_la_ld_p26.laz
20060901_u299540_3_b_la_ld_p26.laz
20060901_u299540_3_c_la_ld_p26.laz
20060901_u299540_3_d_la_ld_p26.laz
20060901_u299540_4_a_la_ld_p26.laz
20060901_u299540_4_b_la_ld_p26.laz
20060901_u299540_4_c_la_ld_p26.laz
20060901_u299540_4_d_la_ld_p26.laz
20060901_u299547_2_a_la_ld_p26.laz
20060901_u299547_2_b_la_ld_p26.laz
20060901_u299547_2_d_la_ld_p26.laz
20060901_u299547_4_a_la_ld_p26.laz
20060901_u299548_1_a_la_ld_p26.laz
20060901_u299548_1_b_la_ld_p26.laz
20060901_u299548_1_c_la_ld_p26.laz
20060901_u299548_1_d_la_ld_p26.laz
20060901_u299548_2_a_la_ld_p26.laz
20060901_u299548_2_b_la_ld_p26.laz
20060901_u299548_2_c_la_ld_p26.laz
20060901_u299548_2_d_la_ld_p26.laz
20060901_u299548_3_a_la_ld_p26.laz
20060901_u299548_3_b_la_ld_p26.laz
20060901_u299548_3_c_la_ld_p26.laz
20060901_u299548_3_d_la_ld_p26.laz
20060901_u299548_4_a_la_ld_p26.laz
20060901_u299548_4_b_la_ld_p26.laz
20060901_u299548_4_c_la_ld_p26.laz
20060901_u299548_4_d_la_ld_p26.laz
20060901_u299556_1_a_la_ld_p26.laz
20060901_u299556_1_d_la_ld_p26.laz
20060901_u299556_2_a_la_ld_p26.laz
20060901_u299556_2_b_la_ld_p26.laz
20060901_u299556_2_c_la_ld_p26.laz
20060901_u299556_2_d_la_ld_p26.laz
20060901_u299556_3_d_la_ld_p26.laz
20060901_u299556_4_a_la_ld_p26.laz
20060901_u299556_4_b_la_ld_p26.laz
20060901_u299556_4_c_la_ld_p26.laz
20060901_u299556_4_d_la_ld_p26.laz
20060901_u299564_1_a_la_ld_p26.laz
20060901_u299564_1_b_la_ld_p26.laz
20060901_u299564_1_c_la_ld_p26.laz

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