2022 USGS Lidar: Mid-North, IL
Data Set (DS) | OCM Partners (OCMP)GUID: gov.noaa.nmfs.inport:70282 | Updated: July 31, 2024 | Published / External
Summary
Short Citation
OCM Partners, 2025: 2022 USGS Lidar: Mid-North, IL, https://www.fisheries.noaa.gov/inport/item/70282.
Full Citation Examples
LIDAR-derived binary (.las) files ASPRS version 1.4 format containing classified points of all returns. There are 11 classifications: Unclassified, Ground, Automated Low Veg [0.5-5 feet], Automated Medium Veg [5-20 feet], Automated High Veg [>20 feet], Automated Buildings, Low Noise, Water, Bridge Decks, High Noise and Ignored Ground (breakline proximity). The files are delivered in 2000 ft by 2000 ft tiles. These files adhere to the USGS-NGP Lidar Base Specification 2021 rev. A, Quality Level 2 (QL2) standards. The contractual aggregate nominal pulse spacing (ANPS) is less than or equal to 0.5 m. The contractual aggregate nominal point density (ANPD) is 4.0 points or greater per square meter.
This dataset covers approximately 9013 square miles in north central Illinois and consists of 4 deliveries or blocks.
IL_MidNorth_1 (Work Unit 229055) - Approximately 3410 square miles, including Fulton (partial), Henderson, Knox (partial), McDonough, Mercer, and Warren counties
IL_MidNorth_2 (Work Unit 300135) - Approximately 3161 square miles, including Fulton (partial), Knox (partial), Marshall, Peoria, Putnam, Stark, Tazewell, and Woodford counties
IL_MidNorth_3 (Work Unit 300136) - Approximately 2126 square miles, including DeWitt, McLean, and Platt counties
IL_MidNorth_4 (Work Unit 300137) - Approximately 369 square miles, including DuPage county
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
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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 in LAZ format, Illinois State Plane (East or West) NAD83(2011), US survey feet coordinates and NAVD88 (Geoid18) elevations in US survey feet.
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
-91.2° W,
-90.08° E,
41.35° N,
40.17° S
IL_MidNorth_1
2022-04-03 - 2022-05-08
Dates of collection for IL_MidNorth_1
Item Identification
Title: | 2022 USGS Lidar: Mid-North, IL |
---|---|
Short Name: | il2022_midnorth_m9866_metadata |
Status: | Completed |
Creation Date: | 2022 |
Publication Date: | 2022-12-28 |
Abstract: |
LIDAR-derived binary (.las) files ASPRS version 1.4 format containing classified points of all returns. There are 11 classifications: Unclassified, Ground, Automated Low Veg [0.5-5 feet], Automated Medium Veg [5-20 feet], Automated High Veg [>20 feet], Automated Buildings, Low Noise, Water, Bridge Decks, High Noise and Ignored Ground (breakline proximity). The files are delivered in 2000 ft by 2000 ft tiles. These files adhere to the USGS-NGP Lidar Base Specification 2021 rev. A, Quality Level 2 (QL2) standards. The contractual aggregate nominal pulse spacing (ANPS) is less than or equal to 0.5 m. The contractual aggregate nominal point density (ANPD) is 4.0 points or greater per square meter. This dataset covers approximately 9013 square miles in north central Illinois and consists of 4 deliveries or blocks. IL_MidNorth_1 (Work Unit 229055) - Approximately 3410 square miles, including Fulton (partial), Henderson, Knox (partial), McDonough, Mercer, and Warren counties IL_MidNorth_2 (Work Unit 300135) - Approximately 3161 square miles, including Fulton (partial), Knox (partial), Marshall, Peoria, Putnam, Stark, Tazewell, and Woodford counties IL_MidNorth_3 (Work Unit 300136) - Approximately 2126 square miles, including DeWitt, McLean, and Platt counties IL_MidNorth_4 (Work Unit 300137) - Approximately 369 square miles, including DuPage county 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: |
This task is for providing a spring 2022 leaf-off and snow-free lidar survey over an Area of Interest (AOI) of approximately 9,013 square miles in central and northeastern Illinois. This Task Order will support the National Resources Conservation Service (NRCS) agricultural resource mapping and soil survey programs, and the 3DEP mission. The following will describe the proposed services and associated revised costs to successfully complete the mission. |
Supplemental Information: |
USGS Task Order 140G0222F0045-IL_MidNorth_D22 Synthetic Points: Optech's Galaxy T2000 raw lidar post-processing software LMS uses a method to fill small voids with synthetic points when the PulseTRAK algorithm drops a point recording. This can happen between the transition of PIA (pulse-in-air) zones. The following are the USGS lidar fields in JSON: {
"ldrinfo" : {
"ldrspec" : "USGS-NGP Lidar Base Specification 2021, Revision A", "ldrsens" : "Optech Galaxy T2000 Airborne Laser Terrain Mappers (ALTM) 5060475, 5060492 & 5060495", "ldrmaxnr" : "8", "ldrnps" : "0.5", "ldrdens" : "4", "ldranps" : "0.5", "ldradens" : "4", "ldrfltht" : "2585,3250", "ldrfltsp" : "170", "ldrscana" : "45,40", "ldrscanr" : "98,69", "ldrpulsr" : "1200,600", "ldrpulsd" : "3.5", "ldrpulsw" : "1.2925,1.625", "ldrwavel" : "1064", "ldrmpia" : "1", "ldrbmdiv" : "0.25", "ldrswatw" : "2141,2366", "ldrswato" : "20,55", "ldrgeoid" : "National Geodetic Survey (NGS) Geoid18" }, "ldraccur" : {
"ldrchacc" : "0.26,0.32", "rawnva" : "0.0", "rawnvan" : "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 not identified in these files using the standard LAS overlap bit.", "lasintr" : "12", "lasclass" : {
"clascode" : "1", "clasitem" : "Unclassified" }, "lasclass" : {
"clascode" : "2", "clasitem" : "Ground" }, "lasclass" : {
"clascode" : "3", "clasitem" : "Low Vegetation (0-3m; automated only)" }, "lasclass" : {
"clascode" : "4", "clasitem" : "Medium Vegetation (3-7m; automated only)" }, "lasclass" : {
"clascode" : "5", "clasitem" : "High Vegetation (greater than 7m; automated only)" }, "lasclass" : {
"clascode" : "6", "clasitem" : "Buildings (automated only)" }, "lasclass" : {
"clascode" : "7", "clasitem" : "Low Noise" }, "lasclass" : {
"clascode" : "9", "clasitem" : "Water" }, "lasclass" : {
"clascode" : "17", "clasitem" : "Bridge" }, "lasclass" : {
"clascode" : "18", "clasitem" : "High Noise" }, "lasclass" : {
"clascode" : "20", "clasitem" : "Ignore Breakline" } }} |
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 > ILLINOIS
|
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 |
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City: | Charleston |
State/Province: | SC |
Data Set Information
Data Set Scope Code: | Data Set |
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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: | Merrick-Surdex Joint Venture, LLP, USGS |
Support Roles
Data Steward
Date Effective From: | 2023 |
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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 |
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Extent Group 1
Extent Group 1 / Geographic Area 1
W° Bound: | -91.2 | |
---|---|---|
E° Bound: | -90.08 | |
N° Bound: | 41.35 | |
S° Bound: | 40.17 | |
Description |
IL_MidNorth_1 |
Extent Group 1 / Time Frame 1
Time Frame Type: | Range |
---|---|
Start: | 2022-04-03 |
End: | 2022-05-08 |
Description: |
Dates of collection for IL_MidNorth_1 |
Extent Group 2
Extent Group 2 / Geographic Area 1
W° Bound: | -90.1 | |
---|---|---|
E° Bound: | -88.91 | |
N° Bound: | 41.34 | |
S° Bound: | 40.26 | |
Description |
IL_MidNorth_2 |
Extent Group 2 / Time Frame 1
Time Frame Type: | Range |
---|---|
Start: | 2022-04-10 |
End: | 2022-06-28 |
Description: |
Dates of collection for IL_MidNorth_2 |
Extent Group 3
Extent Group 3 / Geographic Area 1
W° Bound: | -89.29 | |
---|---|---|
E° Bound: | -88.45 | |
N° Bound: | 40.77 | |
S° Bound: | 39.79 | |
Description |
IL_MidNorth_3 |
Extent Group 3 / Time Frame 1
Time Frame Type: | Range |
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Start: | 2022-05-07 |
End: | 2022-06-28 |
Description: |
Dates of collection for IL_MidNorth_3 |
Extent Group 4
Extent Group 4 / Geographic Area 1
W° Bound: | -88.27 | |
---|---|---|
E° Bound: | -87.9 | |
N° Bound: | 42 | |
S° Bound: | 41.68 | |
Description |
IL_MidNorth_4 |
Extent Group 4 / Time Frame 1
Time Frame Type: | Range |
---|---|
Start: | 2022-03-21 |
End: | 2022-04-10 |
Description: |
Dates of collection for IL_MidNorth_4 |
Spatial Information
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 |
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Reference System 2
Coordinate Reference System |
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Access Information
Security Class: | Unclassified |
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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: | 2023-07-13 |
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End Date: | Present |
Download URL: | https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=9866/details/9866 |
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/IL_MidNorth_D22/ |
Distributor: | U.S. Geological Survey (2022 - Present) |
File Name: | Bulk Download |
Description: |
Bulk download of data files in LAZ format, Illinois State Plane (East or West) NAD83(2011), US survey feet coordinates and NAVD88 (Geoid18) elevations in US survey feet. |
File Type (Deprecated): | LAZ |
Distribution Format: | LAS/LAZ - LASer |
Compression: | Zip |
URLs
URL 1
URL: | https://coast.noaa.gov/dataviewer/ |
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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/IL_MidNorth_D22/USGS_IL_MidNorth_D22_Project_Report.pdf |
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Name: | USGS Project Report |
URL Type: |
Online Resource
|
File Resource Format: | |
Description: |
Link to the USGS project report. |
URL 3
URL: | https://rockyweb.usgs.gov/vdelivery/Datasets/Staged/Elevation/metadata/IL_MidNorth_D22/ |
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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/IL_MidNorth_D22/IL_MidNorth_1_D22/reports/Lidar_Report/140G0222F0045-IL_MidNorth_D22_WU_ID229055_Lidar_Mapping_Report.pdf |
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Name: | Lidar Report - IL_MidNorth_1 |
URL Type: |
Online Resource
|
File Resource Format: | |
Description: |
Link to the Merrick-Surdex Joint Venture (MSJV) lidar report for IL_MidNorth_1 |
URL 5
URL: | https://rockyweb.usgs.gov/vdelivery/Datasets/Staged/Elevation/metadata/IL_MidNorth_D22/IL_MidNorth_2_D22/reports/Lidar_Report/140G0222F0045-IL_MidNorth_D22_WU_ID300135_Lidar_Mapping_Report.pdf |
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Name: | Lidar Report - IL_MidNorth_2 |
URL Type: |
Online Resource
|
File Resource Format: | |
Description: |
Link to the Merrick-Surdex Joint Venture (MSJV) lidar report for IL_MidNorth_2 |
URL 6
URL: | https://rockyweb.usgs.gov/vdelivery/Datasets/Staged/Elevation/metadata/IL_MidNorth_D22/IL_MidNorth_3_D22/reports/Lidar_Report/140G0222F0045-IL_MidNorth_D22_WU_ID300136_Lidar_Mapping_Report.pdf |
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Name: | Lidar Report - IL_MidNorth_3 |
URL Type: |
Online Resource
|
File Resource Format: | |
Description: |
Link to the Merrick-Surdex Joint Venture (MSJV) lidar report for IL_MidNorth_3 |
URL 7
URL: | https://rockyweb.usgs.gov/vdelivery/Datasets/Staged/Elevation/metadata/IL_MidNorth_D22/IL_MidNorth_4_D22/reports/140G0222F0045-IL_MidNorth_D22_WU_ID300137_Lidar_Mapping_Report.pdf |
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Name: | Lidar Report - IL_MidNorth_4 |
URL Type: |
Online Resource
|
File Resource Format: | |
Description: |
Link to the Merrick-Surdex Joint Venture (MSJV) lidar report for IL_MidNorth_4 |
URL 8
URL: | https://s3-us-west-2.amazonaws.com/usgs-lidar-public/IL_MidNorth_1_D22/ept.json |
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Name: | USGS Entwine Point Tile (EPT) - IL_MidNorth_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 9
URL: | https://s3-us-west-2.amazonaws.com/usgs-lidar-public/IL_MidNorth_2_D22/ept.json |
---|---|
Name: | USGS Entwine Point Tile (EPT) - IL_MidNorth_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 10
URL: | https://s3-us-west-2.amazonaws.com/usgs-lidar-public/IL_MidNorth_3_D22/ept.json |
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Name: | USGS Entwine Point Tile (EPT) - IL_MidNorth_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 11
URL: | https://s3-us-west-2.amazonaws.com/usgs-lidar-public/IL_MidNorth_4_D22/ept.json |
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Name: | USGS Entwine Point Tile (EPT) - IL_MidNorth_4 |
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://usgs.entwine.io/data/view.html?r=[%22https://s3-us-west-2.amazonaws.com/usgs-lidar-public/IL_MidNorth_1_D22/ept.json%22,%22https://s3-us-west-2.amazonaws.com/usgs-lidar-public/IL_MidNorth_2_D22/ept.json%22,%22https://s3-us-west-2.amazonaws.com/usgs-lidar-public/IL_MidNorth_3_D22/ept.json%22,%22https://s3-us-west-2.amazonaws.com/usgs-lidar-public/IL_MidNorth_4_D22/ept.json%22] |
---|---|
Name: | USGS 3D View |
URL Type: |
Online Resource
|
Description: |
Link to view the point cloud, using the Entwine Point Tile (EPT) format, in the 3D Potree viewer. |
Data Quality
Horizontal Positional Accuracy: |
The lidar data set was produced to meet ASPRS Positional Accuracy Standards for Digital Geospatial Data (2014) for a 30 (cm) RMSEx / RMSEy Horizontal Accuracy Class which equates to Positional Horizontal Accuracy = +/- 73.4 cm at a 95% confidence level. |
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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) = 4.27 cm RMSE Vegetated Vertical Accuracy (VVA) = 15.27 cm at 95th Percentile |
Completeness Report: |
These LAS data files include all data points collected. No points have been removed or excluded. 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 Non-Vegetated Vertical Accuracy specifications. |
Conceptual Consistency: |
Data covers the entire area specified for this project. |
Data Management
Have Resources for Management of these Data Been Identified?: | Yes |
---|---|
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) - IL_MidNorth_1
Contact Role Type: | Publisher |
---|---|
Contact Type: | Organization |
Contact Name: | USGS |
Citation URL: | https://s3-us-west-2.amazonaws.com/usgs-lidar-public/IL_MidNorth_1_D22/ept.json |
Citation URL Name: | Entwine Point Tile for IL_MidNorth_1 |
USGS AWS Entwine Point Tile (EPT) - IL_MidNorth_2
Contact Role Type: | Publisher |
---|---|
Contact Type: | Organization |
Contact Name: | USGS |
Citation URL: | https://s3-us-west-2.amazonaws.com/usgs-lidar-public/IL_MidNorth_2_D22/ept.json |
Citation URL Name: | Entwine Point Tile for IL_MidNorth_2 |
USGS AWS Entwine Point Tile (EPT) - IL_MidNorth_3
Contact Role Type: | Publisher |
---|---|
Contact Type: | Organization |
Contact Name: | USGS |
Citation URL: | https://s3-us-west-2.amazonaws.com/usgs-lidar-public/IL_MidNorth_3_D22/ept.json |
Citation URL Name: | Entwine Point Tile for IL_MidNorth_3 |
USGS AWS Entwine Point Tile (EPT) - IL_MidNorth_4
Contact Role Type: | Publisher |
---|---|
Contact Type: | Organization |
Contact Name: | USGS |
Citation URL: | https://s3-us-west-2.amazonaws.com/usgs-lidar-public/IL_MidNorth_4_D22/ept.json |
Citation URL Name: | Entwine Point Tile for IL_MidNorth_4 |
Process Steps
Process Step 1
Description: |
LIDAR data was collected using the Optech Galaxy sensor. The raw data was verified in MARS software for complete coverage of the project area, and boresighted to align the flightlines. Raw data files were parsed into manageable client-specific tiles. These tiles were then processed through automated filtering that separates the data into different classification groups: unclassified points, ground points, low veg [0.5-5 feet], medium veg [5-20 feet], high veg [>20 feet], automated buildings, low noise, water, bridge decks, high noise and ignore ground (breakline proximity). The data was next taken into MARS to reclassify the erroneous points that may remain in the LIDAR point cloud after auto filter. Four points or greater per square meter (QL2+) ASPRS ver 1.4 format. |
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Process Date/Time: | 2022-12-28 00:00:00 |
Process Step 2
Description: |
LiDAR swath data was measured to have an aggregate of 0.349 meter nominal pulse spacing and 8.224 pulses per meter. The method used was counting first return points within the each swath then dividing by the area of the extent of the corresponding swath to get density. NPS was mathematically derived from this density number. This was performed on each swath then averaged to generate the two numbers above. This USGS method does not consider swath sidelap in these calculations. |
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Process Date/Time: | 2022-12-28 00:00:00 |
Process Step 3
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 (GEOID18). |
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Process Contact: | U.S. Geological Survey |
Process Step 4
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/IL_MidNorth_1_D22/ept.json https://s3-us-west-2.amazonaws.com/usgs-lidar-public/IL_MidNorth_2_D22/ept.json https://s3-us-west-2.amazonaws.com/usgs-lidar-public/IL_MidNorth_3_D22/ept.json https://s3-us-west-2.amazonaws.com/usgs-lidar-public/IL_MidNorth_4_D22/ept.json |
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Process Date/Time: | 2023-07-13 00:00:00 |
Process Contact: | Office for Coastal Management (OCM) |
Catalog Details
Catalog Item ID: | 70282 |
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GUID: | gov.noaa.nmfs.inport:70282 |
Metadata Record Created By: | Rebecca Mataosky |
Metadata Record Created: | 2023-07-13 20:07+0000 |
Metadata Record Last Modified By: | Rebecca Mataosky |
Metadata Record Last Modified: | 2024-07-31 18:52+0000 |
Metadata Record Published: | 2023-07-14 |
Owner Org: | OCMP |
Metadata Publication Status: | Published Externally |
Do Not Publish?: | N |
Metadata Last Review Date: | 2023-07-14 |
Metadata Review Frequency: | 1 Year |
Metadata Next Review Date: | 2024-07-14 |