2019 - 2020 USGS Lidar: Central Georgia
Data Set (DS) | OCM Partners (OCMP)GUID: gov.noaa.nmfs.inport:70012 | Updated: June 3, 2024 | Published / External
Summary
Short Citation
OCM Partners, 2025: 2019 - 2020 USGS Lidar: Central Georgia, https://www.fisheries.noaa.gov/inport/item/70012.
Full Citation Examples
Classified Point Cloud -- USGS task order 140G0219F0277 required Winter 2019/Spring 2020 LiDAR surveys to be collected over 20,320 square miles covering part or all of 60 counties in Georgia and 5 counties in Alabama in support of the USGS 3DEP Program. Aerial LiDAR data for this task order was planned, acquired, processed, and produced at an aggregate nominal pulse spacing (ANPS) of less than or equal to 0.71 meters and in compliance with USGS National Geospatial Program LiDAR Base Specification version 1.3. Classes include: 1 - Unclassified, 2 - Ground, 3 - Low Vegetation (0.5 - 5 ft), 4 - Medium Vegetation (5 - 20 ft), 5 - High Vegetation (greater than 20 ft), 6 - Buildings, 7 - Low Noise, 9 - Water Surface, 17 - Bridge Decks, 18 - High Noise, 20- Ignored Ground (Breakline Proximity), 22 - Temporal Exclusion
Block 1 (Work Unit 183176) - covers approximately 4273 square miles
Counties included:
Baldwin, Bibb (partial), Franklin, Gwinnett, Hancock, Hart, Jasper (partial), Jones (partial), Madison, Morgan (partial), Newton (partial), Oconee, Oglethorpe, Putnam, Stephens, Walton (partial)
Block 2 (Work Unit 183296) - covers approximately 3057 square miles
Counties included:
Chatahoochee (partial), Crisp (partial), Dooly (partial), Harris, Houston (partial), Lee, Macon (partial), Marion (partial), Schley (partial), Stewart (partial), Sumter (partial), Taylor (partial), Terrell (partial), Webster
Block 3 (Work Unit 217457) - covers approximately 6360 square miles
Counties included:
Baker (partial), Barbour, (partial), Brooks (partial), Calhoun, Clay (partial), Colquitt (partial), Cook, Crisp (partial), Dougherty, Early (partial), Grady (partial), Henry, (AL, partial), Houston, (partial), Lee, Lowndes, Mitchell (partial), Randolph (partial), Sumter (partial), Terrell, Thomas (partial), Tift, Turner (partial), Worth
Block 4 (Work Unit 223562) - covers approximately 2497 square miles
Counties included:
Baker (partial), Decatur, Early (partial), Geneva (partial), Grady (partial), Henry (AL, partial), Houston (partial), Miller, Mitchell (partial), Seminole
Block 5 (Work Unit 231249) - covers approximately 2391 square miles
Counties included:
Bibb (partial), Butts, Clayton, Fayette (partial), Henry (GA), Jasper (partial), Jones (partial), Monroe, Morgan (partial), Newton (partial), Spalding (partial), Walton (partial),
Block 6 (Work Unit 300006) - covers approximately 1634 square miles
Counties included:
Carroll, Coweta, Douglas, Fayette (partial), Heard, Spalding (partial)
This metadata record supports the data entry in the NOAA Digital Coast Data Access Viewer (DAV). For this data set, the DAV is leveraging the Entwine Point Tiles (EPT) hosted by USGS on Amazon Web Services.
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. Change to an orthometric vertical datum is one of the many options.
-
LAS/LAZ - LASer
Bulk download of data files from Blocks 4, 5,and 6 in LAZ format, Albers Equal Area NAD83(2011) meters coordinates and orthometric heights in meters.
-
LAS/LAZ - LASer
Bulk download of data files from Blocks 1, 2, and 3 in LAZ format, Albers Equal Area NAD83(2011) meters coordinates and orthometric heights in meters.
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
elevation, 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
-85.4171° W,
-84.47° E,
33.8742° N,
33.0563° S
Block 6
2020-01-08 - 2020-01-29
Dates of collection for Block 6.
Item Identification
Title: | 2019 - 2020 USGS Lidar: Central Georgia |
---|---|
Short Name: | ga2019_cent_ga_m9840_metadata |
Status: | Completed |
Creation Date: | 2019 |
Publication Date: | Unknown |
Abstract: |
Classified Point Cloud -- USGS task order 140G0219F0277 required Winter 2019/Spring 2020 LiDAR surveys to be collected over 20,320 square miles covering part or all of 60 counties in Georgia and 5 counties in Alabama in support of the USGS 3DEP Program. Aerial LiDAR data for this task order was planned, acquired, processed, and produced at an aggregate nominal pulse spacing (ANPS) of less than or equal to 0.71 meters and in compliance with USGS National Geospatial Program LiDAR Base Specification version 1.3. Classes include: 1 - Unclassified, 2 - Ground, 3 - Low Vegetation (0.5 - 5 ft), 4 - Medium Vegetation (5 - 20 ft), 5 - High Vegetation (greater than 20 ft), 6 - Buildings, 7 - Low Noise, 9 - Water Surface, 17 - Bridge Decks, 18 - High Noise, 20- Ignored Ground (Breakline Proximity), 22 - Temporal Exclusion Block 1 (Work Unit 183176) - covers approximately 4273 square miles Counties included: Baldwin, Bibb (partial), Franklin, Gwinnett, Hancock, Hart, Jasper (partial), Jones (partial), Madison, Morgan (partial), Newton (partial), Oconee, Oglethorpe, Putnam, Stephens, Walton (partial) Block 2 (Work Unit 183296) - covers approximately 3057 square miles Counties included: Chatahoochee (partial), Crisp (partial), Dooly (partial), Harris, Houston (partial), Lee, Macon (partial), Marion (partial), Schley (partial), Stewart (partial), Sumter (partial), Taylor (partial), Terrell (partial), Webster Block 3 (Work Unit 217457) - covers approximately 6360 square miles Counties included: Baker (partial), Barbour, (partial), Brooks (partial), Calhoun, Clay (partial), Colquitt (partial), Cook, Crisp (partial), Dougherty, Early (partial), Grady (partial), Henry, (AL, partial), Houston, (partial), Lee, Lowndes, Mitchell (partial), Randolph (partial), Sumter (partial), Terrell, Thomas (partial), Tift, Turner (partial), Worth Block 4 (Work Unit 223562) - covers approximately 2497 square miles Counties included: Baker (partial), Decatur, Early (partial), Geneva (partial), Grady (partial), Henry (AL, partial), Houston (partial), Miller, Mitchell (partial), Seminole Block 5 (Work Unit 231249) - covers approximately 2391 square miles Counties included: Bibb (partial), Butts, Clayton, Fayette (partial), Henry (GA), Jasper (partial), Jones (partial), Monroe, Morgan (partial), Newton (partial), Spalding (partial), Walton (partial), Block 6 (Work Unit 300006) - covers approximately 1634 square miles Counties included: Carroll, Coweta, Douglas, Fayette (partial), Heard, Spalding (partial) This metadata record supports the data entry in the NOAA Digital Coast Data Access Viewer (DAV). For this data set, the DAV is leveraging the Entwine Point Tiles (EPT) hosted by USGS on Amazon Web Services. |
Purpose: |
Aerial lidar was collected to support the mapping efforts of individual counties in the State of Georgia and Alabama and the USGS 3DEP program. |
Supplemental Information: |
Prime Contractor: The Atlantic Group, LLC. Lidar data were acquired and calibrated by The Atlantic Group. All follow-on processing was completed by the prime contractor.
The following are the USGS lidar fields in JSON: {
"ldrinfo" : {
"ldrspec" : "Base Specifications 1.3", "ldrsens" : "Optech Galaxy Prime", "ldrmaxnr" : "6", "ldrnps" : "0.5302", "ldrdens" : "3.5571", "ldranps" : "0.5473", "ldradens" : "3.3385", "ldrfltht" : "2000", "ldrfltsp" : "150", "ldrscana" : "45", "ldrscanr" : "60", "ldrpulsr" : "350", "ldrpulsd" : "0", "ldrpulsw" : "1664", "ldrwavel" : "1064", "ldrmpia" : "1", "ldrbmdiv" : "0.25", "ldrswatw" : "1657", "ldrswato" : "20", "ldrgeoid" : "National Geodetic Survey (NGS) Geoid12B" }, "ldraccur" : {
"ldrchacc" : "0", "rawnva" : "0", "rawnvan" : "0", "clsnva" : "0", "clsnvan" : "0", "clsvva" : "0", "clsvvan" : "0" }, "lasinfo" : {
"lasver" : "1.4", "lasprf" : "6", "laswheld" : "Withheld (ignore) points were identified in these files using the standard LAS Withheld bit.", "lasolap" : "Swath "overage" points were identified in these files using the standard LAS overlap bit.", "lasintr" : "16", "lasclass" : {
"clascode" : "1", "clasitem" : "Processed but unclassified" }, "lasclass" : {
"clascode" : "2", "clasitem" : "Bare-earth ground" }, "lasclass" : {
"clascode" : "3", "clasitem" : "Low Vegetation" }, "lasclass" : {
"clascode" : "4", "clasitem" : "Medium Vegetation" }, "lasclass" : {
"clascode" : "5", "clasitem" : "High Vegetation" }, "lasclass" : {
"clascode" : "6", "clasitem" : "Buildings" }, "lasclass" : {
"clascode" : "7", "clasitem" : "Low Noise" }, "lasclass" : {
"clascode" : "9", "clasitem" : "Water" }, "lasclass" : {
"clascode" : "17", "clasitem" : "Bridge Decks" }, "lasclass" : {
"clascode" : "18", "clasitem" : "High Noise" }, "lasclass" : {
"clascode" : "20", "clasitem" : "Ignored Ground" }, "lasclass" : {
"clascode" : "21", "clasitem" : "Snow (where reliably identifiable)" }, "lasclass" : {
"clascode" : "22", "clasitem" : "Temporal Exclusion (typically non-favored data in intertidal zones)" } }} |
Keywords
Theme Keywords
Thesaurus | Keyword |
---|---|
Global Change Master Directory (GCMD) Science Keywords |
EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION
|
ISO 19115 Topic Category |
elevation
|
Spatial Keywords
Thesaurus | Keyword |
---|---|
Global Change Master Directory (GCMD) Location Keywords |
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA
|
Global Change Master Directory (GCMD) Location Keywords |
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > ALABAMA
|
Global Change Master Directory (GCMD) Location Keywords |
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > GEORGIA
|
Global Change Master Directory (GCMD) Location Keywords |
VERTICAL LOCATION > LAND SURFACE
|
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 |
Maintenance Frequency: | Unknown |
Data Presentation Form: | Model (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: | The Atlantic Group, LLC, USGS |
Support Roles
Data Steward
Date Effective From: | 2023 |
---|---|
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: | 2023 |
---|---|
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: | 2022 |
---|---|
Date Effective To: | |
Contact (Organization): | U.S. Geological Survey |
Address: |
12201 Sunrise Valley Drive Reston, VA 20191 USA |
URL: | USGS Home |
Metadata Contact
Date Effective From: | 2023 |
---|---|
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: | 2023 |
---|---|
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
W° Bound: | -85.4171 | |
---|---|---|
E° Bound: | -84.47 | |
N° Bound: | 33.8742 | |
S° Bound: | 33.0563 | |
Description |
Block 6 |
Extent Group 1 / Time Frame 1
Time Frame Type: | Range |
---|---|
Start: | 2020-01-08 |
End: | 2020-01-29 |
Description: |
Dates of collection for Block 6. |
Extent Group 2
Extent Group 2 / Geographic Area 1
W° Bound: | -85.72 | |
---|---|---|
E° Bound: | -83.63 | |
N° Bound: | 32.9 | |
S° Bound: | 31.9 | |
Description |
Block 2 |
Extent Group 2 / Time Frame 1
Time Frame Type: | Range |
---|---|
Start: | 2020-01-25 |
End: | 2020-06-14 |
Description: |
Dates of collection for Block 2. |
Extent Group 3
Extent Group 3 / Geographic Area 1
W° Bound: | -84.51 | |
---|---|---|
E° Bound: | -83.47 | |
N° Bound: | 33.7 | |
S° Bound: | 32.65 | |
Description |
Block 5 |
Extent Group 3 / Time Frame 1
Time Frame Type: | Range |
---|---|
Start: | 2019-12-18 |
End: | 2020-02-02 |
Description: |
Dates of collection for Block 5. |
Extent Group 4
Extent Group 4 / Geographic Area 1
W° Bound: | -85.95 | |
---|---|---|
E° Bound: | -84.21 | |
N° Bound: | 31.29 | |
S° Bound: | 30.68 | |
Description |
Block 4 |
Extent Group 4 / Time Frame 1
Time Frame Type: | Range |
---|---|
Start: | 2020-02-14 |
End: | 2020-03-28 |
Description: |
Dates of collection for Block 4. |
Extent Group 5
Extent Group 5 / Geographic Area 1
W° Bound: | -85.43 | |
---|---|---|
E° Bound: | -83 | |
N° Bound: | 31.93 | |
S° Bound: | 30.6 | |
Description |
Block 3 |
Extent Group 5 / Time Frame 1
Time Frame Type: | Range |
---|---|
Start: | 2020-02-02 |
End: | 2020-03-28 |
Description: |
Dates of collection for Block 3. |
Extent Group 6
Extent Group 6 / Geographic Area 1
W° Bound: | -84.29 | |
---|---|---|
E° Bound: | -82.72 | |
N° Bound: | 34.71 | |
S° Bound: | 32.82 | |
Description |
Block 1 |
Extent Group 6 / Time Frame 1
Time Frame Type: | Range |
---|---|
Start: | 2019-12-31 |
End: | 2020-01-28 |
Description: |
Dates of collection for Block 1. |
Spatial Information
Spatial Resolution
Horizontal Distance: | 0.6 Meter |
---|
Spatial Representation
Representations Used
Grid: | No |
---|---|
Vector: | Yes |
Text / Table: | No |
TIN: | No |
Stereo Model: | No |
Video: | No |
Reference Systems
Reference System 1
Coordinate Reference System |
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
Reference System 2
Coordinate Reference System |
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|
Access Information
Security Class: | Unclassified |
---|---|
Data Access Procedure: |
Data is available online for bulk and custom 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: | 2023-05-26 |
---|---|
End Date: | Present |
Download URL: | https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=9840/details/9840 |
Distributor: | NOAA Office for Coastal Management (NOAA/OCM) (2023 - Present) |
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. Change to an orthometric vertical datum is one of the many options. |
File Type (Deprecated): | Zip |
Compression: | Zip |
Distribution 2
Start Date: | 2022 |
---|---|
End Date: | Present |
Download URL: | https://rockyweb.usgs.gov/vdelivery/Datasets/Staged/Elevation/LPC/Projects/GA_Central_2018_B19/ |
Distributor: | U.S. Geological Survey (2022 - Present) |
File Name: | Bulk Download - Blocks 4, 5, 6 |
Description: |
Bulk download of data files from Blocks 4, 5,and 6 in LAZ format, Albers Equal Area NAD83(2011) meters coordinates and orthometric heights in meters. |
File Type (Deprecated): | LAZ |
Distribution Format: | LAS/LAZ - LASer |
Compression: | Zip |
Distribution 3
Start Date: | 2022 |
---|---|
End Date: | Present |
Download URL: | https://rockyweb.usgs.gov/vdelivery/Datasets/Staged/Elevation/LPC/Projects/GA_Central_2019_B19/ |
Distributor: | U.S. Geological Survey (2022 - Present) |
File Name: | Bulk Download - Blocks 1, 2, 3 |
Description: |
Bulk download of data files from Blocks 1, 2, and 3 in LAZ format, Albers Equal Area NAD83(2011) meters coordinates and orthometric heights in meters. |
File Type (Deprecated): | LAZ |
Distribution Format: | LAS/LAZ - LASer |
Compression: | Zip |
URLs
URL 1
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 2
URL: | https://rockyweb.usgs.gov/vdelivery/Datasets/Staged/Elevation/metadata/GA_Central_2019_B19/USGS_GA_Central_2018_B19_Project_Report.pdf |
---|---|
Name: | USGS Project Report |
URL Type: |
Online Resource
|
File Resource Format: | |
Description: |
Link to the USGS Project Report that provides information about the project, vertical accuracy results, and the point classes and sensors used. |
URL 3
URL: | https://rockyweb.usgs.gov/vdelivery/Datasets/Staged/Elevation/metadata/GA_Central_2019_B19/ |
---|---|
Name: | USGS Additional Info |
URL Type: |
Online Resource
|
Description: |
Link to the reports, breaklines, metadata, and spatial metadata. |
URL 4
URL: | https://rockyweb.usgs.gov/vdelivery/Datasets/Staged/Elevation/metadata/GA_Central_2019_B19/GA_Central_1_2019/reports/ID183179_GA_CENTRAL_1_2018.pdf |
---|---|
Name: | Lidar Report - Block 1 (Work Unit 183176) |
File Resource Format: | |
Description: |
Link to the lidar report for Block 1 (Work Unit 183176). |
URL 5
URL: | https://rockyweb.usgs.gov/vdelivery/Datasets/Staged/Elevation/metadata/GA_Central_2019_B19/GA_Central_5_2019/reports/19064_Project%20Report_Block3.pdf |
---|---|
Name: | Lidar Report - Block 5 (Work Unit 231249) |
URL Type: |
Online Resource
|
File Resource Format: | |
Description: |
Link to the lidar report for Block 5 (Work Unit 231249). |
URL 6
URL: | https://rockyweb.usgs.gov/vdelivery/Datasets/Staged/Elevation/metadata/GA_Central_2019_B19/GA_Central_2_2019/reports/19064_Project%20Report_Block5.pdf |
---|---|
Name: | Lidar Report - Block 2 (Work Unit 183296) |
URL Type: |
Online Resource
|
File Resource Format: | |
Description: |
Link to the lidar report for Block 2 (Work Unit 183296). |
URL 7
URL: | https://rockyweb.usgs.gov/vdelivery/Datasets/Staged/Elevation/metadata/GA_Central_2019_B19/GA_Central_3_2019/reports/ID183179_GA_CENTRAL_3_2018.pdf |
---|---|
Name: | Lidar Report - Block 3 (Work Unit 217457) |
URL Type: |
Online Resource
|
File Resource Format: | |
Description: |
Link to the lidar report for Block 3 (Work Unit 217457). |
URL 8
URL: | https://rockyweb.usgs.gov/vdelivery/Datasets/Staged/Elevation/metadata/GA_Central_2019_B19/GA_Central_4_2019/reports/19064_Project%20Report_Block8.pdf |
---|---|
Name: | Lidar Report - Block 4 (Work Unit 223562) |
URL Type: |
Online Resource
|
File Resource Format: | |
Description: |
Link to the lidar report for Block 4 (Work Unit 223562). |
URL 9
URL: | https://rockyweb.usgs.gov/vdelivery/Datasets/Staged/Elevation/metadata/GA_Central_2019_B19/GA_Central_6_2019/reports/19064_Project%20Report_Block2.pdf |
---|---|
Name: | Lidar Report - Block 6 (Work Unit 300006) |
URL Type: |
Online Resource
|
File Resource Format: | |
Description: |
Link to the lidar report for Block 6 (Work Unit 300006). |
URL 10
URL: | https://s3-us-west-2.amazonaws.com/usgs-lidar-public/GA_Central_1_2018/ept.json |
---|---|
Name: | USGS Entwine Point Tile (EPT) - Block 1 |
URL Type: |
Online Resource
|
File Resource Format: | json |
Description: |
Entwine Point Tile (EPT) is a simple and flexible octree-based storage format for point cloud data. The data is organized in such a way that the data can be reasonably streamed over the internet, pulling only the points you need. EPT files can be queried to return a subset of the points that give you a representation of the area. As you zoom further in, you are requesting higher and higher densities. A dataset in EPT will contain a lot of files, however, the ept.json file describes all the rest. The EPT file can be used in Potree and QGIS to view the point cloud. |
URL 11
URL: | https://s3-us-west-2.amazonaws.com/usgs-lidar-public/GA_Central_2_2018/ept.json |
---|---|
Name: | USGS Entwine Point Tile (EPT) - Block 2 |
URL Type: |
Online Resource
|
File Resource Format: | json |
Description: |
Entwine Point Tile (EPT) is a simple and flexible octree-based storage format for point cloud data. The data is organized in such a way that the data can be reasonably streamed over the internet, pulling only the points you need. EPT files can be queried to return a subset of the points that give you a representation of the area. As you zoom further in, you are requesting higher and higher densities. A dataset in EPT will contain a lot of files, however, the ept.json file describes all the rest. The EPT file can be used in Potree and QGIS to view the point cloud. |
URL 12
URL: | https://s3-us-west-2.amazonaws.com/usgs-lidar-public/GA_Central_3_2018/ept.json |
---|---|
Name: | USGS Entwine Point Tile (EPT) - Block 3 |
URL Type: |
Online Resource
|
File Resource Format: | json |
Description: |
Entwine Point Tile (EPT) is a simple and flexible octree-based storage format for point cloud data. The data is organized in such a way that the data can be reasonably streamed over the internet, pulling only the points you need. EPT files can be queried to return a subset of the points that give you a representation of the area. As you zoom further in, you are requesting higher and higher densities. A dataset in EPT will contain a lot of files, however, the ept.json file describes all the rest. The EPT file can be used in Potree and QGIS to view the point cloud. |
URL 13
URL: | https://s3-us-west-2.amazonaws.com/usgs-lidar-public/GA_Central_4_2018/ept.json |
---|---|
Name: | USGS Entwine Point Tile (EPT) - Block 4 |
Description: |
Entwine Point Tile (EPT) is a simple and flexible octree-based storage format for point cloud data. The data is organized in such a way that the data can be reasonably streamed over the internet, pulling only the points you need. EPT files can be queried to return a subset of the points that give you a representation of the area. As you zoom further in, you are requesting higher and higher densities. A dataset in EPT will contain a lot of files, however, the ept.json file describes all the rest. The EPT file can be used in Potree and QGIS to view the point cloud. |
URL 14
URL: | https://s3-us-west-2.amazonaws.com/usgs-lidar-public/GA_Central_5_2018/ept.json |
---|---|
Name: | USGS Entwine Point Tile (EPT) - Block 5 |
URL Type: |
Online Resource
|
File Resource Format: | json |
Description: |
Entwine Point Tile (EPT) is a simple and flexible octree-based storage format for point cloud data. The data is organized in such a way that the data can be reasonably streamed over the internet, pulling only the points you need. EPT files can be queried to return a subset of the points that give you a representation of the area. As you zoom further in, you are requesting higher and higher densities. A dataset in EPT will contain a lot of files, however, the ept.json file describes all the rest. The EPT file can be used in Potree and QGIS to view the point cloud. |
URL 15
URL: | https://s3-us-west-2.amazonaws.com/usgs-lidar-public/GA_Central_6_2018/ept.json |
---|---|
Name: | USGS Entwine Point Tile (EPT) - Block 6 |
URL Type: |
Online Resource
|
File Resource Format: | json |
Description: |
Entwine Point Tile (EPT) is a simple and flexible octree-based storage format for point cloud data. The data is organized in such a way that the data can be reasonably streamed over the internet, pulling only the points you need. EPT files can be queried to return a subset of the points that give you a representation of the area. As you zoom further in, you are requesting higher and higher densities. A dataset in EPT will contain a lot of files, however, the ept.json file describes all the rest. The EPT file can be used in Potree and QGIS to view the point cloud. |
URL 16
URL: | https://usgs.entwine.io/data/view.html?r=[%22https://s3-us-west-2.amazonaws.com/usgs-lidar-public/GA_Central_1_2018/ept.json%22,%22https://s3-us-west-2.amazonaws.com/usgs-lidar-public/GA_Central_2_2018/ept.json%22,%22https://s3-us-west-2.amazonaws.com/usgs-lidar-public/GA_Central_3_2018/ept.json%22,%22https://s3-us-west-2.amazonaws.com/usgs-lidar-public/GA_Central_4_2018/ept.json%22,%22https://s3-us-west-2.amazonaws.com/usgs-lidar-public/GA_Central_5_2018/ept.json%22,%22https://s3-us-west-2.amazonaws.com/usgs-lidar-public/GA_Central_6_2018/ept.json%22] |
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Name: | USGS 3D View |
URL Type: |
Online Resource
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Description: |
Link to view the point cloud, using the Entwine Point Tile (EPT) format, in the 3D Potree viewer. |
Data Quality
Vertical Positional Accuracy: |
This data set was produced to meet ASPRS Positional Accuracy Standard for Digital Geospatial Data (2014) for a 10-cm RMSEz Vertical Accuracy Class. USGS Determined Vertical Accuracy: Non-Vegetated Vertical Accuracy (NVA) = 12.33 cm at 95% Confidence Level or 6.3 cm RMSE Vegetated Vertical Accuracy (VVA) = 24.34 cm at 95th Percentile |
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Completeness Report: |
Area of interest covers project area. A visual qualitative assessment was performed to ensure data completeness. No void areas or missing data exist. The raw point cloud is of good quality and data passes NVA specifications. Void areas (i.e., areas outside the project boundary but within the tiling scheme) are coded using a unique NODATA value. This value is identified in the appropriate location within the file header. |
Conceptual Consistency: |
All lidar data and lidar derived data covers the entire area of interest. All lidar point cloud tiles show no edge artifacts or mismatches from tile to tile. Void areas (i.e. areas outside the project boundary but within the tiling scheme) are coded using a unique NODATA value. This value is identified in the appropriate location within the file header. Data cover the entire area specified for this project. |
Data Management
Have Resources for Management of these Data Been Identified?: | Yes |
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Approximate Percentage of Budget for these Data Devoted to Data Management: | Unknown |
Do these Data Comply with the Data Access Directive?: | Yes |
Actual or Planned Long-Term Data Archive Location: | NCEI-CO |
How Will the Data Be Protected from Accidental or Malicious Modification or Deletion Prior to Receipt by the Archive?: |
Data is backed up to tape and to cloud storage. |
Lineage
Lineage Statement: |
The NOAA Office for Coastal Management (OCM) ingested references to the USGS Entwine Point Tile (EPT) files hosted on Amazon Web Services (AWS) into the Digital Coast Data Access Viewer (DAV). The DAV accesses the point cloud as it resides on AWS under the usgs-lidar-public-container. |
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Sources
USGS AWS Entwine Point Tile (EPT)
Contact Role Type: | Publisher |
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Contact Type: | Organization |
Contact Name: | USGS |
Citation URL: | https://s3-us-west-2.amazonaws.com/usgs-lidar-public/GA_Central_1_2018/ept.json |
Citation URL Name: | Entwine Point Tile for GA_Central_1_2018 |
USGS AWS Entwine Point Tile (EPT)
Contact Role Type: | Publisher |
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Contact Type: | Organization |
Contact Name: | USGS |
Citation URL: | https://s3-us-west-2.amazonaws.com/usgs-lidar-public/GA_Central_2_2018/ept.json |
Citation URL Name: | Entwine Point Tile for GA_Central_2_2018 |
USGS AWS Entwine Point Tile (EPT)
Contact Role Type: | Publisher |
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Contact Type: | Organization |
Contact Name: | USGS |
Citation URL: | https://s3-us-west-2.amazonaws.com/usgs-lidar-public/GA_Central_6_2018/ept.json |
Citation URL Name: | Entwine Point Tile for GA_Central_6_2018 |
USGS AWS Entwine Point Tile (EPT)
Contact Role Type: | Publisher |
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Contact Type: | Organization |
Contact Name: | USGS |
Citation URL: | https://s3-us-west-2.amazonaws.com/usgs-lidar-public/GA_Central_4_2018/ept.json |
Citation URL Name: | Entwine Point Tile for GA_Central_4_2018 |
USGS AWS Entwine Point Tile (EPT)
Contact Role Type: | Publisher |
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Contact Type: | Organization |
Contact Name: | USGS |
Citation URL: | https://s3-us-west-2.amazonaws.com/usgs-lidar-public/GA_Central_5_2018/ept.json |
Citation URL Name: | Entwine Point Tile for GA_Central_5_2018 |
USGS AWS Entwine Point Tile (EPT)
Contact Role Type: | Publisher |
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Contact Type: | Organization |
Contact Name: | USGS |
Citation URL: | https://s3-us-west-2.amazonaws.com/usgs-lidar-public/GA_Central_3_2018/ept.json |
Citation URL Name: | Entwine Point Tile for GA_Central_3_2018 |
Process Steps
Process Step 1
Description: |
Aircraft and Sensor Information and Flight Plan Execution -- Atlantic operated a PACDV (N750DV) outfitted with an Optech Galaxy Prime LiDAR system during the collection of the project area. Atlantic acquired passes of the AOI as a series of perpendicular and/or adjacent flight-lines executed in flight missions conducted between December 2019 and June 2020. Onboard differential Global Navigation Satellite System (GNSS) unit(s) recorded sample aircraft positions at 2 hertz (Hz) or more frequency. LiDAR data was only acquired when a minimum of six (6) satellites were in view. Twenty-three (23) Continuously Operating Reference Stations (CORS) were used to control the LiDAR acquisition for the defined project area. |
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Process Date/Time: | 2019-12-31 00:00:00 |
Process Step 2
Description: |
Ground Control Survey -- Ground survey points were collected in support of this project, including LiDAR Control Points (LCP), Non-vegetated Vertical Accuracy (NVA) and Vegetated Vertical Accuracy (VVA).
Point cloud data accuracy was tested against a Triangulated Irregular Network (TIN) constructed from LiDAR points in clear and open areas. A clear and open area can be characterized with respect to topographic and ground cover variation such that a minimum of five (5) times the Nominal Pulse Spacing (NPS) exists with less than 1/3 of the RMSEZ deviation from a low-slope plane. Slopes that exceed ten (10) percent were avoided.
Each land cover type representing ten (10) percent or more of the total project area were tested and reported with a VVA. In land cover categories other than dense urban areas, the tested points did not have obstructions forty-five (45) degrees above the horizon to ensure a satisfactory TIN surface. The VVA value is provided as a target. It is understood that in areas of dense vegetation, swamps, or extremely difficult terrain, this value may be exceeded.
The NVA value is a requirement that must be met, regardless of any allowed âbustsâ in the VVA(s) for individual land cover types within the project. Checkpoints for each assessment (NVA and VVA) are required to be well-distributed throughout the land cover type, for the entire project area. |
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Process Date/Time: | 2020-05-11 00:00:00 |
Process Step 3
Description: |
LiDAR Point Cloud Generation -- Atlantic used Leica software products to download the IPAS ABGNSS/IMU data and raw laser scan files from the airborne system. Waypoint Inertial Explorer is used to extract the raw IPAS ABGNSS/IMU data, which is further processed in combination with controlled base stations to provide the final Smoothed Best Estimate Trajectory (SBET) for each mission. The SBETs are combined with the raw laser scan files to export the LiDAR ASCII Standard (*.las) formatted swath point clouds. |
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Process Date/Time: | 2021-01-14 00:00:00 |
Process Step 4
Description: |
LiDAR Calibration -- Using a combination of GeoCue, TerraScan and TerraMatch; overlapping swath point clouds are corrected for any orientation or linear deviations to obtain the best fit swath-to-swath calibration. Relative calibration was evaluated using advanced plane-matching analysis and parameter corrections derived. This process was repeated interactively until residual errors between overlapping swaths, across all project missions, was reduced to ≤2cm. A final analysis of the calibrated lidar is performed using a TerraMatch tie line report for an overall statistical model of the project area. Individual control point assessments for this project can be found in Section VI of the report.
Upon completion of the data calibration, a complete set of elevation difference intensity rasters (dZ Orthos) are produced. A user-defined color ramp is applied depicting the offsets between overlapping swaths based on project specifications. The dZ orthos provide an opportunity to review the data calibration in a qualitative manner. Atlantic assigns green to all offset values that fall below the required RMSDz requirement of the project. A yellow color is assigned for offsets that fall between the RMSDz value and 1.5x of that value. Finally, red values are assigned to all values that fall beyond 1.5x of the RMSDz requirements of the project. |
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Process Date/Time: | 2021-05-28 00:00:00 |
Process Step 5
Description: |
LiDAR Classification -- Multiple automated filtering routines are applied to the calibrated LiDAR point cloud identifying and extracting bare-earth and above ground features. GeoCue, TerraScan, and TerraModeler software was used for the initial batch processing, visual inspection and any manual editing of the LiDAR point clouds. Atlantic utilized collected breakline data to perform classification for class 9 (Water). |
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Process Date/Time: | 2022-05-12 00:00:00 |
Process Step 6
Description: |
Original point clouds in LAS/LAZ format were restructured as Entwine Point Tiles and stored on Amazon Web Services. The data were re-projected horizontally to WGS84 web mercator (EPSG 3857) and no changes were made to the vertical elevations in NAVD88 (GEOID12B). |
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Process Contact: | U.S. Geological Survey |
Process Step 7
Description: |
The NOAA Office for Coastal Management (OCM) created references to the Entwine Point Tile (EPT) files that were ingested into the NOAA Digital Coast Data Access Viewer (DAV). No changes were made to the data. The DAV will access the point cloud as it resides on Amazon Web Services (AWS) under the usgs-lidar-public container. These are the AWS URLs being accessed: https://s3-us-west-2.amazonaws.com/usgs-lidar-public/GA_Central_1_2018/ept.json https://s3-us-west-2.amazonaws.com/usgs-lidar-public/GA_Central_2_2018/ept.json https://s3-us-west-2.amazonaws.com/usgs-lidar-public/GA_Central_3_2018/ept.json https://s3-us-west-2.amazonaws.com/usgs-lidar-public/GA_Central_4_2018/ept.json https://s3-us-west-2.amazonaws.com/usgs-lidar-public/GA_Central_5_2018/ept.json https://s3-us-west-2.amazonaws.com/usgs-lidar-public/GA_Central_6_2018/ept.json |
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Process Date/Time: | 2023-05-26 00:00:00 |
Process Contact: | Office for Coastal Management (OCM) |
Catalog Details
Catalog Item ID: | 70012 |
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GUID: | gov.noaa.nmfs.inport:70012 |
Metadata Record Created By: | Rebecca Mataosky |
Metadata Record Created: | 2023-05-26 19:42+0000 |
Metadata Record Last Modified By: | Rebecca Mataosky |
Metadata Record Last Modified: | 2024-06-03 20:51+0000 |
Metadata Record Published: | 2023-05-31 |
Owner Org: | OCMP |
Metadata Publication Status: | Published Externally |
Do Not Publish?: | N |
Metadata Last Review Date: | 2023-05-31 |
Metadata Review Frequency: | 1 Year |
Metadata Next Review Date: | 2024-05-31 |