2018 USACE FEMA Topobathy Lidar: Main Island, Culebra, and Vieques, Puerto Rico
Data Set (DS) | OCM Partners (OCMP)GUID: gov.noaa.nmfs.inport:53078 | Updated: October 17, 2023 | Published / External
Summary
Short Citation
OCM Partners, 2025: 2018 USACE FEMA Topobathy Lidar: Main Island, Culebra, and Vieques, Puerto Rico, https://www.fisheries.noaa.gov/inport/item/53078.
Full Citation Examples
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.
None
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
https://coast.noaa.gov
Metadata Contact
NOAA Office for Coastal Management (NOAA/OCM)
coastal.info@noaa.gov
(843) 740-1202
https://coast.noaa.gov
Extents
-67.286° W,
-65.203° E,
18.524° N,
17.9° S
2018-07-03
Blk_209, Blk_210, Blk_211
2018-07-04
Blk_204, Blk_205, Blk_206, Blk_207, Blk_208
2018-07-05
Blk_204, Blk_223
2018-07-06
Blk_202
2018-07-07
Blk_201, Blk_203
2018-07-08
Blk_203
2018-07-11
Blk_224
2018-07-12
Blk_216, Blk_224
2018-07-17
Blk_219, Blk_220
2018-07-18
Blk_219, Blk_221, Blk_222
2018-07-20
Blk_214
2018-07-21
Blk_212, Blk_213, Blk_216
2018-07-22
Blk_214, Blk_218
2018-07-23
Blk_215, Blk_216
2018-07-24
Blk_217
2018-07-25
Blk_225, Blk_226, Blk_227, Blk_228
2018-07-26
Blk_214, Blk_215
2018-07-27
Blk_215
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
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
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
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
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 |
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Extent Group 1
Extent Group 1 / Geographic Area 1
W° Bound: | -67.286 | |
---|---|---|
E° Bound: | -65.203 | |
N° Bound: | 18.524 | |
S° Bound: | 17.9 |
Extent Group 1 / Time Frame 1
Time Frame Type: | Discrete |
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Start: | 2018-07-03 |
Description: |
Blk_209, Blk_210, Blk_211 |
Extent Group 1 / Time Frame 2
Time Frame Type: | Discrete |
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Start: | 2018-07-04 |
Description: |
Blk_204, Blk_205, Blk_206, Blk_207, Blk_208 |
Extent Group 1 / Time Frame 3
Time Frame Type: | Discrete |
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Start: | 2018-07-05 |
Description: |
Blk_204, Blk_223 |
Extent Group 1 / Time Frame 4
Time Frame Type: | Discrete |
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Start: | 2018-07-06 |
Description: |
Blk_202 |
Extent Group 1 / Time Frame 5
Time Frame Type: | Discrete |
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Start: | 2018-07-07 |
Description: |
Blk_201, Blk_203 |
Extent Group 1 / Time Frame 6
Time Frame Type: | Discrete |
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Start: | 2018-07-08 |
Description: |
Blk_203 |
Extent Group 1 / Time Frame 7
Time Frame Type: | Discrete |
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Start: | 2018-07-11 |
Description: |
Blk_224 |
Extent Group 1 / Time Frame 8
Time Frame Type: | Discrete |
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Start: | 2018-07-12 |
Description: |
Blk_216, Blk_224 |
Extent Group 1 / Time Frame 9
Time Frame Type: | Discrete |
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Start: | 2018-07-17 |
Description: |
Blk_219, Blk_220 |
Extent Group 1 / Time Frame 10
Time Frame Type: | Discrete |
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Start: | 2018-07-18 |
Description: |
Blk_219, Blk_221, Blk_222 |
Extent Group 1 / Time Frame 11
Time Frame Type: | Discrete |
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Start: | 2018-07-20 |
Description: |
Blk_214 |
Extent Group 1 / Time Frame 12
Time Frame Type: | Discrete |
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Start: | 2018-07-21 |
Description: |
Blk_212, Blk_213, Blk_216 |
Extent Group 1 / Time Frame 13
Time Frame Type: | Discrete |
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Start: | 2018-07-22 |
Description: |
Blk_214, Blk_218 |
Extent Group 1 / Time Frame 14
Time Frame Type: | Discrete |
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Start: | 2018-07-23 |
Description: |
Blk_215, Blk_216 |
Extent Group 1 / Time Frame 15
Time Frame Type: | Discrete |
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Start: | 2018-07-24 |
Description: |
Blk_217 |
Extent Group 1 / Time Frame 16
Time Frame Type: | Discrete |
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Start: | 2018-07-25 |
Description: |
Blk_225, Blk_226, Blk_227, Blk_228 |
Extent Group 1 / Time Frame 17
Time Frame Type: | Discrete |
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Start: | 2018-07-26 |
Description: |
Blk_214, Blk_215 |
Extent Group 1 / Time Frame 18
Time Frame Type: | Discrete |
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Start: | 2018-07-27 |
Description: |
Blk_215 |
Extent Group 1 / Time Frame 19
Time Frame Type: | Discrete |
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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
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
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
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
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
URL: | https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/8560/supplemental/pr2018_usace_pr_m8560.kmz |
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Name: | Browse graphic |
URL Type: |
Browse Graphic
|
File Resource Format: | KML |
Description: |
This graphic displays the footprint for this lidar data set. |
URL 4
URL: | https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=8571 |
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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. |
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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
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. |
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Process Date/Time: | 2018-07-03 00:00:00 |
Process Step 2
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). |
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Process Date/Time: | 2018-07-05 00:00:00 |
Process Step 3
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. |
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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 |