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Short Citation:
OCM Partners, 2024: 2017 ISGS Lidar: Greene, Macoupin, Montgomery Counties, IL, https://www.fisheries.noaa.gov/inport/item/72438.

Item Identification

Title: 2017 ISGS Lidar: Greene, Macoupin, Montgomery Counties, IL
Short Name: il2017_grn_mac_mont_m10110_metadata
Status: Completed
Creation Date: 2017
Publication Date: 2017
Abstract:

Merrick & Company (Merrick) was contracted by the University of Illinois Urbana-Champaign / Illinois State Geological Survey (ISGS) to provide a lidar validation ground survey, aerial lidar data collection and processing of approximately 2,220.50 square miles for Greene, Macoupin, and Montgomery Counties, IL (IL-3 Counties). LIDAR-derived binary (.las) files ASPRS ver 1.4 format containing classified points of all returns. There are 11 classifications: Unclassified, Ground, Low Veg, Medium Veg, High Veg, Buildings, Low Noise, Water, Ignore Ground, Bridge Decks and High Noise. The files are delivered in section formatted tiles. These files adhere to the National Enhanced Elevation Assessment (NEEA) Quality Level 2 (QL2) standards. The contractual aggregate nominal pulse spacing (ANPS) is less than or equal to 0.71m. The contractual aggregate nominal point density (ANPD) is 2.0 points or greater per square meter.

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:

unknown

Supplemental Information:

The following are the USGS lidar fields in JSON:

{

"ldrinfo" : {

"ldrspec" : "USGS NGP Base Specification v1.2",

"ldrsens" : "Optech Galaxy Airborne Laser Terrain Mappers (ALTM)",

"ldrmaxnr" : "8",

"ldrnps" : "0.71",

"ldrdens" : "2",

"ldranps" : "0.56",

"ldradens" : "3.2",

"ldrfltht" : "2,150",

"ldrfltsp" : "170",

"ldrscana" : "40",

"ldrscanr" : "62",

"ldrpulsr" : "350",

"ldrpulsd" : "3.5",

"ldrpulsw" : "1.05",

"ldrwavel" : "1064",

"ldrmpia" : "1",

"ldrbmdiv" : "0.25",

"ldrswatw" : "1565",

"ldrswato" : "30",

"ldrcrs" : "NAD_1983_2011_StatePlane_Illinois_West_FIPS_1202_Ft_US",

"ldrgeoid" : "National Geodetic Survey (NGS) Geoid12B"

},

"ldraccur" : {

"ldrchacc" : "0.1",

"rawnva" : "0.096",

"rawnvan" : "83",

"clsnva" : "0.097",

"clsnvan" : "83",

"clsvva" : "0.178",

"clsvvan" : "61"

},

"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 by a separate bit flag.",

"lasintr" : "12-bit",

"lasclass" : {

"clascode" : "1",

"clasitem" : "Undetermined/Unclassifed"

},

"lasclass" : {

"clascode" : "2",

"clasitem" : "Ground"

},

"lasclass" : {

"clascode" : "3",

"clasitem" : "Low Veg"

},

"lasclass" : {

"clascode" : "4",

"clasitem" : "Medium Veg"

},

"lasclass" : {

"clascode" : "5",

"clasitem" : "High Veg"

},

"lasclass" : {

"clascode" : "6",

"clasitem" : "Building"

},

"lasclass" : {

"clascode" : "7",

"clasitem" : "Low point (noise)"

},

"lasclass" : {

"clascode" : "9",

"clasitem" : "Water"

},

"lasclass" : {

"clascode" : "10",

"clasitem" : "Ignore ground (near a breakline)"

},

"lasclass" : {

"clascode" : "17",

"clasitem" : "Bridge Decks"

},

"lasclass" : {

"clascode" : "18",

"clasitem" : "High Noise"

}

}}

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
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)
Entity Attribute Detail Citation:

ASPRS ver 1.4 format:1 = Unclassified2 = Ground3 = Low Veg4 = Medium Veg5 = High Veg6 = Building7 = Low Noise9 = Water10 = Ignore Ground17 = Bridge18 = High Noise

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 & Co, ISGS

Support Roles

Data Steward

CC ID: 1331021
Date Effective From: 2024
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: 1331020
Date Effective From: 2024
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: 1331042
Date Effective From: 2019
Date Effective To:
Contact (Organization): U.S. Geological Survey
Address: 12201 Sunrise Valley Drive
Reston, VA 20191
USA
URL: USGS Home

Metadata Contact

CC ID: 1331022
Date Effective From: 2024
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: 1331023
Date Effective From: 2024
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: 1331026
W° Bound: -90.62965
E° Bound: -89.126421
N° Bound: 39.533649
S° Bound: 38.990944

Extent Group 1 / Time Frame 1

CC ID: 1331025
Time Frame Type: Range
Start: 2017-04-07
End: 2017-04-24

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

CC ID: 1331043

Coordinate Reference System

CRS Type: Projected
EPSG Code: EPSG:3857
EPSG Name: WGS 84 / Pseudo-Mercator
See Full Coordinate Reference System Information

Reference System 2

CC ID: 1331044

Coordinate Reference System

CRS Type: Vertical
EPSG Code: EPSG:6360
EPSG Name: NAVD88 height (ftUS)
See Full Coordinate Reference System Information

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

CC ID: 1331027
Start Date: 2024-04-12
End Date: Present
Download URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=10110/details/10110
Distributor: NOAA Office for Coastal Management (NOAA/OCM) (2024 - 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.

Distribution Format: Not Applicable
Compression: Zip

Distribution 2

CC ID: 1331028
Start Date: 2019
End Date: Present
Download URL: https://rockyweb.usgs.gov/vdelivery/Datasets/Staged/Elevation/LPC/Projects/USGS_LPC_IL_GrnMacMont_2017_LAS_2018/laz
Distributor: U.S. Geological Survey (2019 - Present)
File Name: Bulk Download
Description:

Bulk download of data files in LAZ format, a horizontal projection/datum of NAD83 (2011), State Plane Illinois West Zone, US survey feet and vertical datum of NAVD88 (GEOID12B), US survey feet.

Distribution Format: LAS/LAZ - LASer
Compression: LAZ

URLs

URL 1

CC ID: 1331018
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

CC ID: 1331045
URL: https://prd-tnm.s3.amazonaws.com/StagedProducts/Elevation/metadata/IL_GreenMacoupinMont_2017_C18/IL_GrnMacMont_2017/reports/IL_3_Counties_Lidar_Mapping_Report_2017.pdf
Name: Lidar Report
URL Type:
Online Resource
File Resource Format: pdf
Description:

Link to the lidar project report.

URL 3

CC ID: 1331046
URL: https://prd-tnm.s3.amazonaws.com/StagedProducts/Elevation/metadata/IL_GreenMacoupinMont_2017_C18/IL_GrnMacMont_2017/reports/Greene_Macoupin_Montgomery_3rd_Delivery_QAQC_Report_Summary.pdf
Name: QC Report
URL Type:
Online Resource
File Resource Format: pdf
Description:

Link to the lidar QC report.

URL 4

CC ID: 1331047
URL: https://prd-tnm.s3.amazonaws.com/index.html?prefix=StagedProducts/Elevation/metadata/IL_GreenMacoupinMont_2017_C18/IL_GrnMacMont_2017/
Name: USGS Additional Info
URL Type:
Online Resource
Description:

Link to the reports, breaklines, metadata, and spatial metadata.

URL 5

CC ID: 1331048
URL: https://s3-us-west-2.amazonaws.com/usgs-lidar-public/USGS_LPC_IL_GrnMacMont_2017_LAS_2018/ept.json
Name: USGS Entwine Point Tile (EPT)
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 6

CC ID: 1331049
URL: https://usgs.entwine.io/data/view.html?r=%22https://s3-us-west-2.amazonaws.com/usgs-lidar-public/USGS_LPC_IL_GrnMacMont_2017_LAS_2018%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.

Technical Environment

Description:

Microsoft Windows Vista Version 6.1 (Build 7601) Service Pack 1; ESRI ArcCatalog 9.3.1.4095

Data Quality

Horizontal Positional Accuracy:

This data set was produced to meet ASPRS Positional Accuracy Standards for Digital Geospatial Data (2014) for a 22.5 (cm) RMSEx / RMSEy Horizontal Accuracy Class which equates to Positional Horizontal Accuracy = +/- 55.1 cm at a 95% confidence level.

Vertical Positional Accuracy:

This data set was tested to meet ASPRS Positional Accuracy Standard for Digital Geospatial Data (2014) for a 10.0-cm RMSEz Vertical Accuracy Class. Actual NVA accuracy was found to be RMSEz = 4.914 cm, equating to +/- 9.632 cm at the 95% confidence level. Actual VVA accuracy was found to be +/- 17.8 cm at the 95th percentile. These results are verified against a TIN. Classified Non-Vegetated Vertical Accuracy (NVA) tested 0.097 meters vertical accuracy at the 95 percent confidence level. Eighty-three (83) NVA points were used and validated against the DEM. Classified Vegetated Vertical Accuracy (VVA) tested 0.182 meters vertical accuracy at the 95th percentile. Sixty-one (61) VVA points were used and validated against the DEM.

Completeness Report:

The dataset was captured, attributed, and reviewed to ensure completeness and accuracy of at least 95%.

Conceptual Consistency:

The dataset was captured, attributed, and reviewed to ensure completeness and accuracy of at least 95%.

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-NC
How Will the Data Be Protected from Accidental or Malicious Modification or Deletion Prior to Receipt by the Archive?:

Data is backed up to cloud storage.

Lineage

Lineage Statement:

The NOAA Office for Coastal Management (OCM) ingested references to the USGS Entwine Point Tiles (EPT) 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.

Sources

USGS AWS Entwine Point Tile (EPT)

CC ID: 1331050
Contact Role Type: Publisher
Contact Type: Organization
Contact Name: USGS
Citation URL: https://s3-us-west-2.amazonaws.com/usgs-lidar-public/USGS_LPC_IL_GrnMacMont_2017_LAS_2018/ept.json
Citation URL Name: Entwine Point Tile (EPT)

Process Steps

Process Step 1

CC ID: 1331013
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, medium veg, high veg, buildings, low noise, water, ignored ground, bridge decks and high noise. The data was next taken into MARS to reclassify the erroneous points that may remain in the LIDAR point cloud after auto filter. Two points or greater per square meter (QL2) ASPRS ver 1.4 format.

Process Date/Time: 2017-09-20 00:00:00

Process Step 2

CC ID: 1331051
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 the vertical units were converted to meters (NAVD88 GEOID12B).

Process Contact: U.S. Geological Survey

Process Step 3

CC ID: 1331052
Description:

The NOAA Office for Coastal Management (OCM) created references to the Entwine Point Tile (EPT) that was 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.

This is the AWS URL being accessed:

https://s3-us-west-2.amazonaws.com/usgs-lidar-public/USGS_LPC_IL_GrnMacMont_2017_LAS_2018/ept.json

Process Date/Time: 2024-04-11 00:00:00
Process Contact: Office for Coastal Management (OCM)

Catalog Details

Catalog Item ID: 72438
GUID: gov.noaa.nmfs.inport:72438
Metadata Record Created By: Rebecca Mataosky
Metadata Record Created: 2024-04-12 14:52+0000
Metadata Record Last Modified By: Rebecca Mataosky
Metadata Record Last Modified: 2024-06-18 19:49+0000
Metadata Record Published: 2024-04-12
Owner Org: OCMP
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2024-04-12
Metadata Review Frequency: 1 Year
Metadata Next Review Date: 2025-04-12