2011 FEMA Lidar: Modoc, CA 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 2011 FEMA Lidar: Modoc, CA 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 https://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.

There are many download managers you can use to get all the data. An example is the uGet program using the list of URLs in file urllist9162.txt. Several posts on the GeoZone blog provide help with downloading, including:

The total size to download all the files is 906M. There are 92 LAZ files and the summary class table is:
Class NumberClass NamePoints
1Unclassified229843057
2Ground122891193
7Low Point (noise)174622
9Water2235716
10Ignored Ground (near breakline)362720
11Withheld26478

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).

Cloud Access

This data is now in an AWS S3 bucket at s3://noaa-nos-coastal-lidar-pds/laz/geoid18/9162.

Meta Info

Tile Index: tileindex.zip (Shapefile)
                2011_Modoc_CA_lidar_9162_index.gpkg (GeoPackage)
                2011_Modoc_CA_lidar_index.gpkg (GeoPackage)
Metadata: 2011_Modoc_CA_lidar_9162_metadata.xml
Metadata: 2011_Modoc_CA_lidar_9162_metadata.html
Metadata: 2011_Modoc_CA_lidar_metadata.xml
Metadata: 2011_Modoc_CA_lidar_metadata.html
XYZ range table: 2011_Modoc_CA_lidar_9162_minmax.csv
README: 0README.txt (contains similar information to above)
URL List: urllist9162.txt is a list of all the URLs for batch downloading.

Supplemental Info

supplemental/BakerAECOM_LiDAR_Modoc_Final_QAQC_Report.pdf
supplemental/Modoc_Final_Report.pdf
supplemental/extent_Modoc_CA_m9162.kmz
supplemental/index.html

Breakline Files

breaklines/MODOC_BREAKLINES.gdb.zip
breaklines/MODOC_BREAKLINES.gpkg.zip
breaklines/README_breaklines_m9162.txt
breaklines/index.html

Point Clouds

20110504_g0039.laz
20110504_g0084.laz
20110504_g0116.laz
20110504_g0062.laz
20110504_g0018.laz
20110504_g0115.laz
20110504_g0114.laz
20110504_g0105.laz
20110504_g0104.laz
20110504_g0083.laz
20110504_g0017.laz
20110504_g0038.laz
20110504_g0103.laz
20110504_g0061.laz
20110504_g0099.laz
20110504_g0098.laz
20110504_g0097.laz
20110504_g0096.laz
20110504_g0082.laz
20110504_g0060.laz
20110504_g0016.laz
20110504_g0095.laz
20110504_g0037.laz
20110504_g0094.laz
20110504_g0081.laz
20110504_g0059.laz
20110504_g0015.laz
20110504_g0036.laz
20110504_g0093.laz
20110504_g0080.laz
20110504_g0058.laz
20110504_g0092.laz
20110504_g0014.laz
20110504_g0035.laz
20110504_g0079.laz
20110504_g0077.laz
20110504_g0076.laz
20110504_g0034.laz
20110504_g0033.laz
20110504_g0057.laz
20110504_g0032.laz
20110504_g0054.laz
20110504_g0009.laz
20110504_g0091.laz
20110504_g0008.laz
20110504_g0075.laz
20110504_g0031.laz
20110504_g0090.laz
20110504_g0088.laz
20110504_g0087.laz
20110504_g0053.laz
20110504_g0007.laz
20110504_g0030.laz
20110504_g0074.laz
20110504_g0086.laz
20110504_g0052.laz
20110504_g0006.laz
20110504_g0029.laz
20110504_g0005.laz
20110504_g0073.laz
20110504_g0051.laz
20110504_g0085.laz
20110504_g0028.laz
20110504_g0050.laz
20110504_g0004.laz
20110504_g0072.laz
20110504_g0027.laz
20110504_g0049.laz
20110504_g0003.laz
20110504_g0071.laz
20110504_g0048.laz
20110504_g0026.laz
20110504_g0070.laz
20110504_g0047.laz
20110504_g0025.laz
20110504_g0069.laz
20110504_g0046.laz
20110504_g0044.laz
20110504_g0043.laz
20110504_g0024.laz
20110504_g0023.laz
20110504_g0021.laz
20110504_g0068.laz
20110504_g0020.laz
20110504_g0066.laz
20110504_g0065.laz
20110504_g0042.laz
20110504_g0019.laz
20110504_g0064.laz
20110504_g0041.laz
20110504_g0040.laz
20110504_g0063.laz

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