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Item Identification
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Physical Location
Data Set Info
Support Roles
Extents
Access Info
Distribution Info
URLs
Data Quality
Lineage
Catalog Details

Summary

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Short Citation
OCM Partners, 2024: 2018 USACE FEMA Topobathy Lidar: Main Island, Culebra, and Vieques, Puerto Rico, https://www.fisheries.noaa.gov/inport/item/53078.
Full Citation Examples

Abstract

These files contain classified topo/bathy lidar data collected after Hurricane Maria. Data are classified as 1 (valid non-ground topographic data), 2 (valid ground topographic data), and 29 (valid bathymetric data). Classes 1 and 2 are defined in accordance with the American Society for Photogrammetry and Remote Sensing (ASPRS) classification standards. These data were collected by the Coastal Zone Mapping and Imaging Lidar (CZMIL) system. CZMIL integrates a lidar sensor with simultaneous topographic and bathymetric capabilities, a digital camera and a hyperspectral imager on a single remote sensing platform for use in coastal mapping and charting activities. Native lidar data is not generally in a format accessible to most Geographic Information Systems (GIS). Specialized in-house and commercial software packages are used to process the native lidar data into 3-dimensional positions that can be imported into GIS software for visualization and further analysis. The 3-D position data are sub-divided into 1-km by 1-km tiles, which are based on the Military Grid Reference System (MGRS).

In addition to the lidar point data, topobathy bare earth Digital Elevation Models (DEMs), at a 1 meter grid spacing, created from the lidar point data are also available from the NOAA Digital Coast. A link to this data is provided in the URL section of this metadata record. DEMs that were created from all classes of points (1, 2, 29) at a 1 meter grid size are available by request via email at: coastal.info@noaa.gov. These products have not been reviewed by the NOAA Office for Coastal Management (OCM) and any conclusions drawn from the analysis of this information are not the responsibility of NOAA or OCM.

Original contact information:

Contact Org: JALBTCX

Title: Data Production Manager

Phone: 228-252-1131

Email: JALBTCX@usace.army.mil

Distribution Information

  • Create custom data files by choosing data area, product type, map projection, file format, datum, etc. A new metadata will be produced to reflect your request using this record as a base.

  • LAS/LAZ - LASer

    Bulk download of data files in LAZ format, geographic coordinates, orthometric heights. Note that the vertical datum (hence elevations) of the files here are different than described in this document.

Access Constraints:

None

Use Constraints:

Users should be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual surface conditions. Users should not use this data for critical applications without a full awareness of its limitations.

Controlled Theme Keywords

COASTAL ELEVATION, elevation, SEAFLOOR TOPOGRAPHY, TERRAIN ELEVATION

Child Items

No Child Items for this record.

Contact Information

Point of Contact
NOAA Office for Coastal Management (NOAA/OCM)
coastal.info@noaa.gov
(843) 740-1202

Metadata Contact
NOAA Office for Coastal Management (NOAA/OCM)
coastal.info@noaa.gov
(843) 740-1202

Extents

Geographic Area 1

-67.286° W, -65.203° E, 18.524° N, 17.9° S

Time Frame 1
2018-07-03

Blk_209, Blk_210, Blk_211

Time Frame 2
2018-07-04

Blk_204, Blk_205, Blk_206, Blk_207, Blk_208

Time Frame 3
2018-07-05

Blk_204, Blk_223

Time Frame 4
2018-07-06

Blk_202

Time Frame 5
2018-07-07

Blk_201, Blk_203

Time Frame 6
2018-07-08

Blk_203

Time Frame 7
2018-07-11

Blk_224

Time Frame 8
2018-07-12

Blk_216, Blk_224

Time Frame 9
2018-07-17

Blk_219, Blk_220

Time Frame 10
2018-07-18

Blk_219, Blk_221, Blk_222

Time Frame 11
2018-07-20

Blk_214

Time Frame 12
2018-07-21

Blk_212, Blk_213, Blk_216

Time Frame 13
2018-07-22

Blk_214, Blk_218

Time Frame 14
2018-07-23

Blk_215, Blk_216

Time Frame 15
2018-07-24

Blk_217

Time Frame 16
2018-07-25

Blk_225, Blk_226, Blk_227, Blk_228

Time Frame 17
2018-07-26

Blk_214, Blk_215

Time Frame 18
2018-07-27

Blk_215

Time Frame 19
2018-07-28

Blk_215, Blk_225

Item Identification

Title: 2018 USACE FEMA Topobathy Lidar: Main Island, Culebra, and Vieques, Puerto Rico
Short Name: pr2018_usace_pr_m8560_metadata
Status: Completed
Abstract:

These files contain classified topo/bathy lidar data collected after Hurricane Maria. Data are classified as 1 (valid non-ground topographic data), 2 (valid ground topographic data), and 29 (valid bathymetric data). Classes 1 and 2 are defined in accordance with the American Society for Photogrammetry and Remote Sensing (ASPRS) classification standards. These data were collected by the Coastal Zone Mapping and Imaging Lidar (CZMIL) system. CZMIL integrates a lidar sensor with simultaneous topographic and bathymetric capabilities, a digital camera and a hyperspectral imager on a single remote sensing platform for use in coastal mapping and charting activities. Native lidar data is not generally in a format accessible to most Geographic Information Systems (GIS). Specialized in-house and commercial software packages are used to process the native lidar data into 3-dimensional positions that can be imported into GIS software for visualization and further analysis. The 3-D position data are sub-divided into 1-km by 1-km tiles, which are based on the Military Grid Reference System (MGRS).

In addition to the lidar point data, topobathy bare earth Digital Elevation Models (DEMs), at a 1 meter grid spacing, created from the lidar point data are also available from the NOAA Digital Coast. A link to this data is provided in the URL section of this metadata record. DEMs that were created from all classes of points (1, 2, 29) at a 1 meter grid size are available by request via email at: coastal.info@noaa.gov. These products have not been reviewed by the NOAA Office for Coastal Management (OCM) and any conclusions drawn from the analysis of this information are not the responsibility of NOAA or OCM.

Original contact information:

Contact Org: JALBTCX

Title: Data Production Manager

Phone: 228-252-1131

Email: JALBTCX@usace.army.mil

Purpose:

This data was collected by USACE on behalf of FEMA as part of the Puerto Rico Shoreline Erosion Assessment Survey following Hurricane Maria to assess changes in elevations above and below water along the coast.

Keywords

Theme Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Science Keywords
EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION
Global Change Master Directory (GCMD) Science Keywords
EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > SEAFLOOR TOPOGRAPHY
Global Change Master Directory (GCMD) Science Keywords
EARTH SCIENCE > OCEANS > COASTAL PROCESSES > COASTAL ELEVATION
ISO 19115 Topic Category
elevation
UNCONTROLLED
None beach
None DOD/USARMY/USACE/SAM/MOBILE/OPJ/JALBTCX > Department of Defense
None erosion
None National Coastal Mapping Program (NCMP)
None Post-Maria
None U.S. Army Corps of Engineers (USACE)

Temporal Keywords

Thesaurus Keyword
UNCONTROLLED
None 2018
None August
None July

Spatial Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Location Keywords
OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > CARIBBEAN SEA > PUERTO RICO
Global Change Master Directory (GCMD) Location Keywords
VERTICAL LOCATION > LAND SURFACE
Global Change Master Directory (GCMD) Location Keywords
VERTICAL LOCATION > SEA FLOOR

Instrument Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Instrument Keywords
LIDAR > Light Detection and Ranging

Platform Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Platform Keywords
Airplane > Airplane

Physical Location

Organization: Office for Coastal Management
City: Charleston
State/Province: SC

Data Set Information

Data Set Scope Code: Data Set
Data Set Type: Elevation
Data Presentation Form: Point Cloud (Digital)
Distribution Liability:

Any conclusions drawn from the analysis of this information are not the responsibility of NOAA, the Office for Coastal Management or its partners.

Data Set Credit: Acknowledgement of the Joint Airborne Lidar Bathymetry Technical Center of Expertise (JALBTCX) would be appreciated in any publications or derived products.

Support Roles

Data Steward

CC ID: 762536
Date Effective From: 2018
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address: coastal.info@noaa.gov
Phone: (843) 740-1202
URL: https://coast.noaa.gov

Distributor

CC ID: 762537
Date Effective From: 2018
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address: coastal.info@noaa.gov
Phone: (843) 740-1202
URL: https://coast.noaa.gov

Metadata Contact

CC ID: 762538
Date Effective From: 2018
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address: coastal.info@noaa.gov
Phone: (843) 740-1202
URL: https://coast.noaa.gov

Point of Contact

CC ID: 762539
Date Effective From: 2018
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address: coastal.info@noaa.gov
Phone: (843) 740-1202
URL: https://coast.noaa.gov

Extents

Currentness Reference: Ground Condition

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 1148943
W° Bound: -67.286
E° Bound: -65.203
N° Bound: 18.524
S° Bound: 17.9

Extent Group 1 / Time Frame 1

CC ID: 1148924
Time Frame Type: Discrete
Start: 2018-07-03
Description:

Blk_209, Blk_210, Blk_211

Extent Group 1 / Time Frame 2

CC ID: 1148925
Time Frame Type: Discrete
Start: 2018-07-04
Description:

Blk_204, Blk_205, Blk_206, Blk_207, Blk_208

Extent Group 1 / Time Frame 3

CC ID: 1148926
Time Frame Type: Discrete
Start: 2018-07-05
Description:

Blk_204, Blk_223

Extent Group 1 / Time Frame 4

CC ID: 1148927
Time Frame Type: Discrete
Start: 2018-07-06
Description:

Blk_202

Extent Group 1 / Time Frame 5

CC ID: 1148928
Time Frame Type: Discrete
Start: 2018-07-07
Description:

Blk_201, Blk_203

Extent Group 1 / Time Frame 6

CC ID: 1148929
Time Frame Type: Discrete
Start: 2018-07-08
Description:

Blk_203

Extent Group 1 / Time Frame 7

CC ID: 1148930
Time Frame Type: Discrete
Start: 2018-07-11
Description:

Blk_224

Extent Group 1 / Time Frame 8

CC ID: 1148931
Time Frame Type: Discrete
Start: 2018-07-12
Description:

Blk_216, Blk_224

Extent Group 1 / Time Frame 9

CC ID: 1148932
Time Frame Type: Discrete
Start: 2018-07-17
Description:

Blk_219, Blk_220

Extent Group 1 / Time Frame 10

CC ID: 1148933
Time Frame Type: Discrete
Start: 2018-07-18
Description:

Blk_219, Blk_221, Blk_222

Extent Group 1 / Time Frame 11

CC ID: 1148934
Time Frame Type: Discrete
Start: 2018-07-20
Description:

Blk_214

Extent Group 1 / Time Frame 12

CC ID: 1148935
Time Frame Type: Discrete
Start: 2018-07-21
Description:

Blk_212, Blk_213, Blk_216

Extent Group 1 / Time Frame 13

CC ID: 1148936
Time Frame Type: Discrete
Start: 2018-07-22
Description:

Blk_214, Blk_218

Extent Group 1 / Time Frame 14

CC ID: 1148937
Time Frame Type: Discrete
Start: 2018-07-23
Description:

Blk_215, Blk_216

Extent Group 1 / Time Frame 15

CC ID: 1148938
Time Frame Type: Discrete
Start: 2018-07-24
Description:

Blk_217

Extent Group 1 / Time Frame 16

CC ID: 1148939
Time Frame Type: Discrete
Start: 2018-07-25
Description:

Blk_225, Blk_226, Blk_227, Blk_228

Extent Group 1 / Time Frame 17

CC ID: 1148940
Time Frame Type: Discrete
Start: 2018-07-26
Description:

Blk_214, Blk_215

Extent Group 1 / Time Frame 18

CC ID: 1148941
Time Frame Type: Discrete
Start: 2018-07-27
Description:

Blk_215

Extent Group 1 / Time Frame 19

CC ID: 1148942
Time Frame Type: Discrete
Start: 2018-07-28
Description:

Blk_215, Blk_225

Access Information

Security Class: Unclassified
Data Access Procedure:

Data is available online for custom and bulk downloads.

Data Access Constraints:

None

Data Use Constraints:

Users should be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual surface conditions. Users should not use this data for critical applications without a full awareness of its limitations.

Distribution Information

Distribution 1

CC ID: 762541
Start Date: 2018
End Date: Present
Download URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=8560
Distributor:
File Name: Customized Download
Description:

Create custom data files by choosing data area, product type, map projection, file format, datum, etc. A new metadata will be produced to reflect your request using this record as a base.

Compression: Zip

Distribution 2

CC ID: 762542
Start Date: 2018
End Date: Present
Download URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/8560/index.html
Distributor:
File Name: Bulk Download
Description:

Bulk download of data files in LAZ format, geographic coordinates, orthometric heights. Note that the vertical datum (hence elevations) of the files here are different than described in this document.

File Type (Deprecated): LAZ
Distribution Format: LAS/LAZ - LASer
Compression: Zip

URLs

URL 1

CC ID: 762532
URL: https://coast.noaa.gov/
Name: NOAA's Office for Coastal Management (OCM) website
URL Type:
Online Resource
File Resource Format: HTML
Description:

Information on the NOAA Office for Coastal Management (OCM)

URL 2

CC ID: 762533
URL: https://coast.noaa.gov/dataviewer/
Name: NOAA's Office for Coastal Management (OCM) Data Access Viewer (DAV)
URL Type:
Online Resource
File Resource Format: HTML
Description:

The Data Access Viewer (DAV) allows a user to search for and download elevation, imagery, and land cover data for the coastal U.S. and its territories. The data, hosted by the NOAA Office for Coastal Management, can be customized and requested for free download through a checkout interface. An email provides a link to the customized data, while the original data set is available through a link within the viewer.

URL 3

CC ID: 762534
URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/8560/supplemental/pr2018_usace_pr_m8560.kmz
Name: Browse graphic
URL Type:
Browse Graphic
File Resource Format: KML
Description:

This graphic displays the footprint for this lidar data set.

URL 4

CC ID: 763345
URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=8571
URL Type:
Online Resource
Description:

Link to custom download, from the Data Access Viewer (DAV), the raster Digital Elevation Model (DEM) data that were created from this lidar data set.

Data Quality

Analytical Accuracy:

JALBTCX evaluates the horizonal accuracy of the final data coverage against availlable basemap imagery products. The final lidar point cloud is gridded according to proceedures defined in the JALBTCX Standard Operating Guide and Appendices (SOGA). The grid products are then visually compared to basemap imagery products to verify the horizontal positions of large buildings and other urban features with the data coverage.

JALBTCX evaluates the vertical accuracy of the final data coverage against traditional ground-truth data. Ground-truth data is acquired and utilized according to specifications outlined in the JALBTCX Standard Operating Guide and Appendices (SOGA) as well as the USGS Lidar BaseSpecification. The final lidar point cloud at every project ground-truth location is compared against ground-truth points in the 'bare_ground' class. Comparisons are performed in the QCoherent LP360 software package, and the final results are output to JALBTCX's Ground Truth Comparison Report.

Horizontal Positional Accuracy:

CZMIL topographic data - Compiled to meet 1 m horizontal accuracy at 95% confidence level. CZMIL bathymetric data - Compiled to meet 3.5 + 0.05d m horizontal accuracy at 95% confidence level, d is depth.

Vertical Positional Accuracy:

CZMIL topographic data - Compiled to meet 19.6 cm vertical accuracy at 95% confidence level. CZMIL bathymetric shallow FOV data - Compiled to meet SQRT((0.20^2) +((0.0075d)^2)) m vertical accuracy at 95% confidence level, d is depth. CZMIL bathymetric deep FOV data - Compiled to meet SQRT((0.30^2) +((0.013d)^2)) m vertical accuracy at 95% confidence level, d is depth.

Completeness Report:

Planned data coverage for this dataset included a 750-meter swath of the Puerto Rico shoreline for the main island, Culebra, and Vieques. Topographic lidar coverage was obtained from the shoreline onshore 500 meters. Bathymetric lidar coverage extends from the shoreline offshore 250 meters or to laser exinction, whichever occurs first. The planned data density is 70 centimeters on land and in shallow water. In deeper water the planned data density decreases to 2 meters. Gaps or data holidays may exist in the data coverage. They arise due to a number of operational and environmental conditions, including but not limited to, airspace restrictions, high terrain, active surf, low-reflectivity bottom substrate materials and turbidity in the water column. Please see the Report of Survey for additional details.

Conceptual Consistency:

Every effort within operational constraints was made to acquire data that meets specifications as outlined in this project's Statement of Work. Per flight block, elevations in areas of swath overlap are internally consistent and meet CZMIL specifications. Annomalous high and/or low elevation values have been removed, and point cloud classificaiton algorithms have been validated via manual review and QC. Temporal differences in elevation exist in areas of active nearshore processes from the dune to the depth of closure. JALBTCX conducts operations in a manner to ameliorate temporal differences, to include the collection of entire flight blocks within single missions. For a given flight block, it's adjacent flight blocks are captured within 3 days as weather and airspace permit.

Quality Control Procedures Employed:

JALBTCX evaluates final data coverage using techniques that are common to the lidar industry. These techniques are performed in a 3D environment for visual review of the final data coverage and verification of data alongside lidar waveforms and imagery collected concurrent with the lidar. Data reviewers perform checks to verify (1) extreme high and/or low elevation values have been invalidated, (2) elevations in areas of swath overlap are internally consistent, (3) binned standard deviation values meet CZMIL specifications, (4) point cloud classifications are valid, and (4) CZMIL processing modes are valid.

Lineage

Process Steps

Process Step 1

CC ID: 1148920
Description:

These data were collected using the CZMIL system. It is owned and operated by the U.S. Army Corps of Engineers (USACE). The system collects topobathy lidar data at 10 kHz and RGB imagery at 2 Hz. A CASI-1500 hyperspectral line scanner is integrated with the system as well. Aircraft position, velocity and acceleration information are collected through a combination of Novatel and POS A/V 510 equipment. All raw data streams are transferred to the office for downloading and processing in CZMIL’s Hydro Fusion software. Aircraft position data are processed using POSPac software and the results are combined with the lidar data to produce 3-D positions for each lidar shot. Upon inspection and QA/QC in the software packages Fledermaus and PFM_ABE, anomalous data are flagged as invalid and have the withheld bit set. PFM_ABE software then exports valid lidar data as a series of unclassified LAS files.

Process Date/Time: 2018-07-03 00:00:00

Process Step 2

CC ID: 1148921
Description:

LAS files are imported into TerraScan V13 module within Microstation V8i, classifies valid topobathy data as ground points (2) and unclassified points (1), and valid bathymetric points (29). Upon completion the macro, the classification results undergo quality control and any misclassified points are manually edited. In areas of dense vegetation the bare earth ground points might be incorrectly classified due to the inability of the laser to penetrate the canopy and reach the bare ground. In these areas, JALBTCX defaults to the algorithm’s “ground” surface instead of manually reclassifying those points. They are partitioned into a series of 1-km delivery boxes, one Classified LAS file per box. The format of the file is LAS version 1.2. Data are classified as 1 (valid non-ground topographic data), 2 (valid ground topographic data), and 29 (valid bathymetric data).

Process Date/Time: 2018-07-05 00:00:00

Process Step 3

CC ID: 1148922
Description:

The NOAA Office for Coastal Management (OCM) received the files in las 1.2 format in several shipments. The files contained lidar intensity and elevation measurements for the project area. Horizontal positions were provided in geographic coordinates, referenced to the North American Datum of 1983 National Adjustment of 2011 (NAD83 NA11). Vertical positions were provided in ellipsoid elevations and in meters. OCM performed the following processing for data storage and Digital Coast provisioning purposes:

1. Converted the files from las to laz format using laszip

2. Set the global encoding bit to 1 using lasinfo

3. Assigned the geokeys, sorted the data by gps time and zipped the data to database and to http.

Process Date/Time: 2018-07-17 00:00:00
Process Contact: Office for Coastal Management (OCM)

Catalog Details

Catalog Item ID: 53078
GUID: gov.noaa.nmfs.inport:53078
Metadata Record Created By: Rebecca Mataosky
Metadata Record Created: 2018-07-17 11:39+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2023-10-17 16:12+0000
Metadata Record Published: 2022-03-16
Owner Org: OCMP
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2022-03-16
Metadata Review Frequency: 1 Year
Metadata Next Review Date: 2023-03-16