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Short Citation:
OCM Partners, 2024: 2015 NRCS Lidar: Pike and Scott Counties, IL, https://www.fisheries.noaa.gov/inport/item/72660.

Item Identification

Title: 2015 NRCS Lidar: Pike and Scott Counties, IL
Short Name: il2015_pike_scott_m10119_metadata
Status: Completed
Creation Date: 2015
Publication Date: 2016
Abstract:

Geographic Extent: Pike and Scott Counties in western Illinois, covering approximately 1,100 total square miles.

Dataset Description of Original Data: The Pike and Scott Counties 2015 LiDAR project called for the planning, acquisition, processing and derivative products of LIDAR data to be collected at an aggregate nominal pulse spacing (NPS) of 0.5 meters. Project specifications are based on the U.S. Geological Survey National Geospatial Program Base LIDAR Specification, Version 1.2. The data was developed based on a horizontal projection/datum of NAD83 (2011), State Plane Coordinate System Illinois West Zone, US survey feet and vertical datum of NAVD1988 (Geoid 12B), US survey feet. LiDAR data was delivered in RAW flight line swath format, processed to create Classified LAS 1.4 Files formatted to 7,998 individual 2,000-foot x 2,000-foot tiles. Corresponding 2-foot intensity image and 2-foot bare earth DEM tiles were created with the same 2,000-foot x 2,000-foot tile schema. Tiles names follow the US National Grid naming schema. Continuous breaklines were produced in Esri shapefile format. A mosaic of the 2-foot bare earth raster DEM tiles was also produced in Esri grid format.

Ground Conditions: LiDAR was collected in winter of 2015 while no snow was on the ground and rivers were at or below normal levels. In order to post process the LiDAR data to meet task order specifications, Quantum Spatial established 42 calibration control points in order to calibrate the LIDAR to known ground locations established throughout the project area. The accuracy of the data was checked with 58 NVA points and 47 VVA points (105 total QC checkpoints).

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:

Classified LAS files are used to show the manually reviewed bare earth surface. This allows the user to create Intensity Images, Breaklines and Raster DEMs. The purpose of these lidar data was to produce high accuracy 3D hydro-flattened Digital Elevation Model (DEM) with a 2-foot cell size. The purpose of these lidar data was to produce high accuracy 3D hydro-flattened Digital Elevation Model (DEM) with a 2-foot cell size.

Supplemental Information:

USGS Contract: G10PC00026 Task Order Number: G15PD01036

CONTRACTOR: Quantum Spatial

Lidar data were acquired and calibrated by Quantum Spatial.

All follow-on processing was completed by the prime contractor.

The following are the USGS lidar fields in JSON:

{

"ldrinfo" : {

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

"ldrsens" : "Optech Orion H300",

"ldrmaxnr" : "5",

"ldrnps" : "0.49",

"ldrdens" : "4.22",

"ldranps" : "0.49",

"ldradens" : "4.22",

"ldrfltht" : "1400",

"ldrfltsp" : "130",

"ldrscana" : "29",

"ldrscanr" : "68.0",

"ldrpulsr" : "275",

"ldrpulsd" : "4",

"ldrpulsw" : "0.41",

"ldrwavel" : "1064",

"ldrmpia" : "1",

"ldrbmdiv" : "0.25",

"ldrswatw" : "724.13",

"ldrswato" : "30",

"ldrgeoid" : "g2012bu0.bin"

},

"ldraccur" : {

"ldrchacc" : "0.196",

"rawnva" : "0.076",

"rawnvan" : "58",

"clsnva" : "0.077",

"clsnvan" : "58",

"clsvva" : "0.144",

"clsvvan" : "47"

},

"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" : "Man-Made Structures"

},

"lasclass" : {

"clascode" : "7",

"clasitem" : "Low Noise"

},

"lasclass" : {

"clascode" : "9",

"clasitem" : "In-land Water"

},

"lasclass" : {

"clascode" : "10",

"clasitem" : "Ignored Ground"

},

"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: None Planned
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: Quantum Spatial, NRCS, USGS

Support Roles

Data Steward

CC ID: 1334604
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: 1334603
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: 1334627
Date Effective From: 2016
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: 1334605
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: 1334606
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: 1334609
W° Bound: -91.37821228796
E° Bound: -90.29634425703
N° Bound: 39.84982718599
S° Bound: 39.38952956893

Extent Group 1 / Time Frame 1

CC ID: 1334608
Time Frame Type: Discrete
Start: 2015-11-22
Description:

Date of collection

Extent Group 1 / Time Frame 2

CC ID: 1334628
Time Frame Type: Discrete
Start: 2015-11-23
Description:

Date of collection

Extent Group 1 / Time Frame 3

CC ID: 1334629
Time Frame Type: Discrete
Start: 2015-11-24
Description:

Date of collection

Extent Group 1 / Time Frame 4

CC ID: 1334630
Time Frame Type: Discrete
Start: 2015-11-25
Description:

Date of collection

Extent Group 1 / Time Frame 5

CC ID: 1334631
Time Frame Type: Discrete
Start: 2015-12-03
Description:

Date of collection

Spatial Information

Spatial Representation

Representations Used

Grid: No
Vector: Yes
Text / Table: No
TIN: No
Stereo Model: No
Video: No

Vector Representation 1

CC ID: 1334598
Point Object Present?: Yes
Point Object Count: 32187803961

Reference Systems

Reference System 1

CC ID: 1334632

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: 1334633

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: 1334610
Start Date: 2024-05-20
End Date: Present
Download URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=10119/details/10119
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: 1334611
Start Date: 2024-05-20
End Date: Present
Download URL: https://rockyweb.usgs.gov/vdelivery/Datasets/Staged/Elevation/LPC/Projects/IL_Pike_Scott_2015/IL_Pike_ScottCo_2015/LAZ
Distributor: U.S. Geological Survey (2016 - Present)
File Name: Bulk Download
Description:

Bulk download of data files in LAZ format, IL State Plane West NAD83(2011), US survey feet coordinates, and in NAVD88 (GEOID12B) elevations in feet.

Distribution Format: LAS/LAZ - LASer
Compression: LAZ

URLs

URL 1

CC ID: 1334601
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: 1334637
URL: https://s3-us-west-2.amazonaws.com/usgs-lidar-public/USGS_LPC_IL_Pike_ScottCo_2015_LAS_2017/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 3

CC ID: 1334638
URL: https://usgs.entwine.io/data/view.html?r=%22https://s3-us-west-2.amazonaws.com/usgs-lidar-public/USGS_LPC_IL_Pike_ScottCo_2015_LAS_2017%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.

URL 4

CC ID: 1334639
URL: https://rockyweb.usgs.gov/vdelivery/Datasets/Staged/Elevation/metadata/IL_Pike-Scott_2015/IL_Pike-ScottCo_2015/reports/26869_PikeScottCoIL_ProjectReport.pdf
Name: Lidar Report
URL Type:
Online Resource
File Resource Format: pdf
Description:

Link to the lidar report.

URL 5

CC ID: 1334640
URL: https://rockyweb.usgs.gov/vdelivery/Datasets/Staged/Elevation/metadata/IL_Pike-Scott_2015/IL_Pike-ScottCo_2015/
Name: USGS Additional Info
URL Type:
Online Resource
Description:

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

Technical Environment

Description:

MicroStation Version 8; TerraScan Version 15; TerraModeler Version 15; GeoCue Version 2014.1.21.1; Esri ArcGIS 10.3; Global Mapper 16; Leica Cloud Pro 1.2; Windows 10 Operating System

\\PSIHQ_NX3200\Projects\Projects\26869_Pike_Scott_County_USGS 897 GB and \\matrix\matrix\LIDAR\26869_NRCS_Pike_Scott_Counties 8.95 TB

Data Quality

Vertical Positional Accuracy:

The specifications require that only raw Nonvegetated Vertical Accuracy (NVA) be computed for raw lidar point cloud swath files. The raw NVA was tested with 58 independent survey points distributed throughout the project area and located in open terrain. These checkpoints were not used in the calibration or post-processing of the lidar point cloud data. Specifications for this project require that the raw NVA be 19.6 cm or better AccuracyZ at 95 percent confidence level.

The raw NVA was tested using 58 independent survey points located in open terrain. The surveyed checkpoints were distributed throughout the project area and surveyed using GNSS procedures and methodologies that provide reliable and consistent results to meet the project's accuracy requirements. Please see the "Survey Accuracy Requirements" and "Field Methodology" sections in the Survey Report for more information. Elevations from the unclassified lidar surface were measured for the x,y location of each check point. Elevations interpolated from the unclassified lidar surface were then compared to the elevation values of the surveyed control. The RMSEz was computed to be 0.039 meters (0.126 feet) and AccuracyZ to be 0.076 meters (0.248 feet). This meets the required AccuracyZ value of 19.6 cm raw NVA at 95 percent confidence level using (RMSEz * 1.9600) as defined by the National Standards for Spatial Data Accuracy (NSSDA); assessed and reported using National Digital Elevation Program (NDEP)/ASPRS Guidelines.

Completeness Report:

These raw 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 Nonvegetated Vertical Accuracy specifications.

Conceptual Consistency:

Data cover 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-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: 1334636
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_Pike_ScottCo_2015_LAS_2017/ept.json
Citation URL Name: Entwine Point Tile (EPT)

Process Steps

Process Step 1

CC ID: 1334596
Description:

Classified LAS Processing:

The bare earth surface is then manually reviewed to ensure correct classification on the Class 2 (Ground) points. After the bare-earth surface is finalized, it is then used to generate all hydro-breaklines through heads-up digitization.

All ground (ASPRS Class 2) LiDAR data inside of the Lake Pond and Double Line Drain hydro flattening breaklines were then classified to water (ASPRS Class 9) using TerraScan macro functionality. A buffer of 3 feet was also used around each hydro-flattened feature to classify these ground (ASPRS Class 2) points to Ignored ground (ASPRS Class 10). All Lake Pond Island and Double Line Drain Island features were checked to ensure that the ground (ASPRS Class 2) points were reclassified to the correct classification after the automated classification was completed. All bridge decks were classified to Class 17.

Upon completion of the bare earth clean-up, automated classification was completed on the dataset to complete final requested classification of the dataset. These classes include: Class 3 - Low vegetation (any default points found within 0.5 - 5' of the final bare earth surface); Class 4 - Medium vegetation (any default points found within 5 - 20' of the final bare earth surface); Class 5 - High vegetation (any default points found above 20' of the final bare earth surface); Class 6 - Man-made features (any default points that meet the criteria for a building, structure inside of a water feature, etc.).

All overlap data was processed through automated functionality provided by TerraScan to classify the overlapping flight line data to approved classes by USGS. The overlap data was identified using the Overlap Flag, per LAS 1.4 specifications.

All data was manually reviewed and any remaining artifacts removed using functionality provided by TerraScan and TerraModeler. Global Mapper was used as a final check of the bare earth dataset. GeoCue was then used to create the deliverable industry-standard LAS files for both the All Point Cloud Data and the Bare Earth. Quantum Spatial proprietary software was used to perform final statistical analysis of the classes in the LAS files, on a per tile level to verify final classification metrics and full LAS header information.

Process Date/Time: 2016-01-01 00:00:00

Process Step 2

CC ID: 1334634
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: 1334635
Description:

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

This is the USGS AWS EPT file being accessed:

https://s3-us-west-2.amazonaws.com/usgs-lidar-public/USGS_LPC_IL_Pike_ScottCo_2015_LAS_2017/ept.json

Process Date/Time: 2024-05-20 00:00:00
Process Contact: Office for Coastal Management (OCM)

Catalog Details

Catalog Item ID: 72660
GUID: gov.noaa.nmfs.inport:72660
Metadata Record Created By: Rebecca Mataosky
Metadata Record Created: 2024-05-20 17:34+0000
Metadata Record Last Modified By: Rebecca Mataosky
Metadata Record Last Modified: 2024-06-18 19:41+0000
Metadata Record Published: 2024-05-20
Owner Org: OCMP
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2024-05-20
Metadata Review Frequency: 1 Year
Metadata Next Review Date: 2025-05-20