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OCM Partners Metadata Library > Lidar - partner (no harvest) >

2021 USGS QL2 Lidar: San Bernardino, CA

Data Set (DS)  |  OCM Partners (OCMP)
GUID: gov.noaa.nmfs.inport:73204  |  Updated: August 1, 2024  |  Published / External 
Summary
Item Identification
Keywords
Physical Location
Data Set Info
Support Roles
Extents
Spatial Info
Access Info
Distribution Info
URLs
Data Quality
Data Management
Lineage
Related Items
Catalog Details

Summary

Short Citation
OCM Partners, 2024: 2021 USGS QL2 Lidar: San Bernardino, CA, https://www.fisheries.noaa.gov/inport/item/73204.
Full Citation Examples

Abstract

LIDAR-derived binary (.las) files containing classified points of all returns. We have seven (7) classifications Unclassified, Ground, Low Noise, Water, Bridge Decks, High Noise and Ignore Ground. These files adhere to USGS-NGP Lidar Base Specification 2020 rev. A Quality Level 2 (QL2) standards, two points or greater per square meter. These files are delivered in tile format (1500x1500m).

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

  • Customized Download
    Not Applicable

    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.

  • Bulk Download
    LAS/LAZ - LASer

    Bulk download of data files in LAZ format, UTM Zone 11N NAD83(2011), meters coordinates and elevation values in NAVD88(GEOID18) meters.

Access Constraints:

None

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be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual surface conditions.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.

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

Geographic Area 1

-117.69123513652° W, -114.4759683287° E, 35.56613895685° N, 34.24359870548° S

Time Frame 1
2021-11-07 - 2021-11-16

Item Identification

Title: 2021 USGS QL2 Lidar: San Bernardino, CA
Short Name: ca2021_san_bernardino_m10163
Status: Completed
Creation Date: 2021
Publication Date: 2022-02-23
Abstract:

LIDAR-derived binary (.las) files containing classified points of all returns. We have seven (7) classifications Unclassified, Ground, Low Noise, Water, Bridge Decks, High Noise and Ignore Ground. These files adhere to USGS-NGP Lidar Base Specification 2020 rev. A Quality Level 2 (QL2) standards, two points or greater per square meter. These files are delivered in tile format (1500x1500m).

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 fall leaf-off 2021 lidar survey to be collected over an Area of Interest (AOI) of approximately 2,702 square miles in southern California including portions of San Bernardino, Kern and Clark Counties. This project will support the USGS Earth MRI (Mapping Resources Initiative), USGS GMEG (Geology, Minerals, Energy, and Geophysics) Science Center, and the 3DEP mission. The project has 3430 tiles (1500m by 1500m) for the QL2 area.
Supplemental Information:

USGS Task Order 140G0221F0290-CA_SanBernardino_EarthMRI_2021_D21

The following are the USGS lidar fields in JSON:

{

"ldrinfo" : {

"ldrspec" : "USGS-NGP Base Lidar Specification 2020 Rev A",

"ldrsens" : "Optech Galaxy Prime Airborne Laser Terrain Mappers (ALTM) 5060380",

"ldrmaxnr" : "8",

"ldrnps" : "0.7",

"ldrdens" : "2",

"ldranps" : "0.7",

"ldradens" : "2",

"ldrfltht" : "3400",

"ldrfltsp" : "170",

"ldrscana" : "40",

"ldrscanr" : "72",

"ldrpulsr" : "700",

"ldrpulsd" : "3.5",

"ldrpulsw" : "1.7",

"ldrwavel" : "1064",

"ldrmpia" : "1",

"ldrbmdiv" : "0.25",

"ldrswatw" : "2475",

"ldrswato" : "20",

"ldrgeoid" : "National Geodetic Survey (NGS) Geoid18"

},

"ldraccur" : {

"ldrchacc" : "0",

"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" : "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 > CALIFORNIA
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: Merrick-Surdex Joint Venture, LLP, USGS

Support Roles

Data Steward

CC ID: 1343135
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: 1343134
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: 1343157
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

CC ID: 1343136
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: 1343137
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: 1343140
W° Bound: -117.69123513652
E° Bound: -114.4759683287
N° Bound: 35.56613895685
S° Bound: 34.24359870548

Extent Group 1 / Time Frame 1

CC ID: 1343139
Time Frame Type: Range
Start: 2021-11-07
End: 2021-11-16

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: 1343158

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: 1343159

Coordinate Reference System
CRS Type: Vertical
EPSG Code: EPSG:5703
EPSG Name: NAVD88 height
▾ 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: 1343141
Start Date: 2024-08-01
End Date: Present
Download URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=10163/details/10163
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: 1343142
Start Date: 2022
End Date: Present
Download URL: https://rockyweb.usgs.gov/vdelivery/Datasets/Staged/Elevation/LPC/Projects/CA_SanBernardino_EarthMRI_2021_D21/CA_SanBern_EMRI_2_2021/LAZ/
Distributor: U.S. Geological Survey (2022 - Present)
File Name: Bulk Download
Description:

Bulk download of data files in LAZ format, UTM Zone 11N NAD83(2011), meters coordinates and elevation values in NAVD88(GEOID18) meters.
Distribution Format: LAS/LAZ - LASer
Compression: LAZ

URLs

URL 1

CC ID: 1343133
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: 1343160
URL: https://rockyweb.usgs.gov/vdelivery/Datasets/Staged/Elevation/metadata/CA_SanBernardino_EarthMRI_2021_D21/USGS_CA_SanBernardino_EarthMRI_2021_D21_Project_Report.pdf
Name: USGS Project Report
URL Type:
Online Resource
File Resource Format: pdf
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

CC ID: 1343161
URL: https://rockyweb.usgs.gov/vdelivery/Datasets/Staged/Elevation/metadata/CA_SanBernardino_EarthMRI_2021_D21/CA_SanBern_EMRI_2_2021/
Name: USGS Additional Info
URL Type:
Online Resource
Description:

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

URL 4

CC ID: 1343162
URL: https://rockyweb.usgs.gov/vdelivery/Datasets/Staged/Elevation/metadata/CA_SanBernardino_EarthMRI_2021_D21/CA_SanBern_EMRI_2_2021/reports/lidar_report/140G0221F0290_CA_SanBernardino_EarthMRI_2021_D21_Lidar_WU_ID223531_229143_Mapping_Report.pdf
Name: Lidar Report
URL Type:
Online Resource
File Resource Format: pdf
Description:

Link to the lidar report.

URL 5

CC ID: 1343163
URL: https://usgs.entwine.io/data/view.html?r=%22https://s3-us-west-2.amazonaws.com/usgs-lidar-public/CA_SanBern_EMRI_2_2021%22
Name: 3D View (Potree USGS)
URL Type:
Online Resource
Description:

Link to view the point cloud, using the Entwine Point Tile (EPT) format, in the 3D Potree viewer.

URL 6

CC ID: 1343164
URL: https://s3-us-west-2.amazonaws.com/usgs-lidar-public/CA_SanBern_EMRI_2_2021/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.

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:

Tested NVA RMSEz = 5.4 cm

Tested 95th percentile value for VVA is : 11.12 cm

For more information see the USGS project report and the lidar report. The links to these reports are provided in the URL section of this metadata record.
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-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: 1343167
Contact Role Type: Publisher
Contact Type: Organization
Contact Name: USGS
Citation URL: https://s3-us-west-2.amazonaws.com/usgs-lidar-public/CA_SanBern_EMRI_2_2021/ept.json
Citation URL Name: Entwine Point Tile for CA_SanBern_EMRI_2_2021

Process Steps

Process Step 1

CC ID: 1343128
Description:

Lidar data was collected using Optech Galaxy Prime 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 noise, water, bridge decks, high noise and ignore ground. 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 per square meter (QL2).
Process Date/Time: 2022-02-23 00:00:00

Process Step 2

CC ID: 1343129
Description:

LiDAR swath data was measured to have an average of 0.558 meter nominal pulse spacing and 3.22 pulses per meter. The method used was counting first return points within 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.
Process Date/Time: 2022-02-23 00:00:00

Process Step 3

CC ID: 1343165
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 and the vertical units of meters (NAVD88 GEOID18) were retained.
Process Contact: U.S. Geological Survey

Process Step 4

CC ID: 1343166
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/CA_SanBern_EMRI_2_2021/ept.json
Process Date/Time: 2024-08-01 00:00:00
Process Contact: Office for Coastal Management (OCM)

Related Items

Item Type Relationship Type Title
Data Set (DS) Cross Reference 2021 USGS QL1 Lidar: San Bernardino, CA

Catalog Details

Catalog Item ID: 73204
GUID: gov.noaa.nmfs.inport:73204
Metadata Record Created By: Rebecca Mataosky
Metadata Record Created: 2024-08-01 17:23+0000
Metadata Record Last Modified By: Rebecca Mataosky
Metadata Record Last Modified: 2024-08-01 18:37+0000
Metadata Record Published: 2024-08-01
Owner Org: OCMP
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2024-08-01
Metadata Review Frequency: 1 Year
Metadata Next Review Date: 2025-08-01