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Short Citation:
OCM Partners, 2023: 2018 USFS Lidar: National Forest Locations (WA, OR), https://www.fisheries.noaa.gov/inport/item/69420.

Item Identification

Title: 2018 USFS Lidar: National Forest Locations (WA, OR)
Short Name: 2018 WA OR Forests usfs m9774
Status: Completed
Creation Date: 2023-03-13
Abstract:

Leaf-on airborne LiDAR was collected over approximately 4,141 square miles of national forestry in Oregon and Washington State.

Purpose:

Meet the U.S. Forest Service need for monitoring and assessment.

Notes:

This metadata was created from the Atlantic, Inc., data report. No FGDC compliant metadata was supplied with the data from USFS.

Keywords

Theme Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Science Keywords
EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY
ISO 19115 Topic Category
elevation

Spatial Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Location Keywords
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > OREGON

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
Country: USA

Data Set Information

Data Set Scope Code: Data Set
Data Set Type: Elevation
Maintenance Frequency: None Planned
Data Presentation Form: Model (digital)
Data Set Credit: U.S. Forest Service; Atlantic, Inc.

Support Roles

Data Steward

CC ID: 1223096
Date Effective From: 2023-03-13
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: 1223098
Date Effective From: 2023-03-13
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

Metadata Contact

CC ID: 1223097
Date Effective From: 2023-03-13
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: 1223113
W° Bound: -121.19468639
E° Bound: -121.11624439
N° Bound: 42.89437835
S° Bound: 42.76640243
Description

Sycan Marsh

Extent Group 1 / Time Frame 1

CC ID: 1223112
Time Frame Type: Range
Start: 2018-06-29
End: 2019-01-24
Description:

Acquisition dates based on tile filenames.

Extent Group 2

Extent Group 2 / Geographic Area 1

CC ID: 1224274
W° Bound: -121.5859
E° Bound: -121.2956
N° Bound: 45.51534
S° Bound: 45.2585
Description

East Zone

Extent Group 2 / Geographic Area 2

CC ID: 1224275
W° Bound: -120.59047
E° Bound: -119.8764
N° Bound: 48.80922
S° Bound: 48.23965
Description

Methow Twisp

Extent Group 3

Extent Group 3 / Geographic Area 1

CC ID: 1224277
W° Bound: -119.49611
E° Bound: -119.025902
N° Bound: 44.40912
S° Bound: 44.28255
Description

North Aldrich

Extent Group 4

Extent Group 4 / Geographic Area 1

CC ID: 1224279
W° Bound: -119.04997
E° Bound: -118.7215075
N° Bound: 43.86232
S° Bound: 43.72728
Description

Rattlesnake

Extent Group 5

Extent Group 5 / Geographic Area 1

CC ID: 1224281
W° Bound: -120.96962
E° Bound: -120.08232
N° Bound: 43.00656
S° Bound: 41.991773
Description

Thomas Creek

Extent Group 6

Extent Group 6 / Geographic Area 1

CC ID: 1224283
W° Bound: -118.79006
E° Bound: -118.677443
N° Bound: 44.2937
S° Bound: 44.12172
Description

Upper Bear Lake

Spatial Information

Spatial Resolution

Horizontal Distance: 0.34 Meter

Spatial Representation

Representations Used

Vector: Yes

Reference Systems

Reference System 1

CC ID: 1223106

Coordinate Reference System

CRS Type: Geographic 3D
EPSG Code: EPSG:6319
EPSG Name: NAD83(2011)
See Full Coordinate Reference System Information

Access Information

Security Class: Unclassified
Data Access Policy:

Public access.

Data Access Constraints:

None

Data Use Constraints:

None

Distribution Information

Distribution 1

CC ID: 1223099
Start Date: 2023-03-13
End Date: Present
Download URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=9774/details/9774
Distributor: NOAA Office for Coastal Management (NOAA/OCM) (2023-03-13 - Present)
Description:

Custom download of data allowing subsetting, change of projection, and generation of derived products.

File Type: Zip

Distribution 2

CC ID: 1223100
Start Date: 2023-03-13
End Date: Present
Download URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9774/index.html
Distributor: NOAA Office for Coastal Management (NOAA/OCM) (2023-03-13 - Present)
Description:

Bulk download of tiles. This will be in an orthometric vertical datum, contrary to this metadata.

File Type: LAZ

URLs

URL 1

CC ID: 1223101
URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9774/supplemental/18031_All_2018_AOIs.pdf
Name: Data Report
URL Type:
Online Resource
File Resource Format: pdf
Description:

Data report from the lidar acquisition contractor.

URL 2

CC ID: 1223102
URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9774/supplemental/USFS_2018_region6_extent_m9774.kmz
Name: Browse Graphic
URL Type:
Browse Graphic
File Resource Format: KMZ
Description:

KMZ showing the area covered by the data.

Data Quality

Horizontal Positional Accuracy:

Not tested.

Vertical Positional Accuracy:

Using 462 validation points, the non-vegetated vertical accuracy (NVA) was 0.12 meters at the 95% confidence level.

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
Is Access to the Data Limited Based on an Approved Waiver?: No
Actual or Planned Long-Term Data Archive Location: NCEI-NC

Lineage

Lineage Statement:

Data were collected and processed by Atlantic, Inc, for the U.S. Forest Service. The U.S. Forest Service transferred the data to NOAA for distribution on the Digital Coast.

Sources

classified lidar data

CC ID: 1223107
Contact Role Type: Originator
Contact Type: Organization
Contact Name: US Forest Service

Process Steps

Process Step 1

CC ID: 1223108
Description:

Atlantic operated a PACDV (N750DV) outfitted with an Optech Galaxy Prime LiDAR system during the collection of the project area. The data was collected with a nominal pulse spacing of 8 pls/m^2 at a nominal flight height of 1500-1800 meters and a nominal flight speed of 130 kts. Scanner pulse rate was 500 kHz. Atlantic acquired 1588 passes of the AOI as a series of perpendicular and/or adjacent flight-lines executed in 44 flight missions conducted between June 29, 2018 and January 24, 2019. 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.

Process Step 2

CC ID: 1223109
Description:

Ground Control:

A total of 545 ground survey points were collected in support of this project.

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 GCP. 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 GCP 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.

Process Step 3

CC ID: 1223115
Description:

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.

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 preformed using a TerraMatch tie line report for an overall statistical model of the project area.

Process Step 4

CC ID: 1223116
Description:

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. Classified point clouds were cut to match the tile index and its corresponding tile names and delivered in .laz format.

The classification scheme was 1=unclassified; 2=ground; 7=low point (noise), 18=high noise.

Process Step 5

CC ID: 1223123
Description:

U.S. Forest services remove high and low noise from 2 LAZ files the vendor missed. Points with Source ID's less than 200 (189, 193, 194) were removed from -

FRESY4_503588_978808_20181105.laz

FRESY4_505088_978808_20181105.laz

Process Step 6

CC ID: 1223110
Description:

Data were received by NOAA Office for Coastal Management from the U.S. Forest Service in USFS region 6 Albers coordinates. Vertical coordinates were NAVD88 meters based on Geoid12b. The data were reprojected to geographic coordinates on the ellipsoid (EPSG:6319) for ingest into the NOAA Digital Coast system.

Process Date/Time: 2023-03-13 00:00:00
Process Contact: NOAA Office for Coastal Management (NOAA/OCM)
Phone (Voice): (843) 740-1202
Email Address: coastal.info@noaa.gov
Source: classified lidar data

Related Items

Item Type Relationship Type Title
Data Set (DS) Cross Reference 2018 USFS Lidar DEM: National Forest Locations (WA, OR)

DEM created from this point cloud.

Catalog Details

Catalog Item ID: 69420
GUID: gov.noaa.nmfs.inport:69420
Metadata Record Created By: Kirk Waters
Metadata Record Created: 2023-03-13 17:04+0000
Metadata Record Last Modified By: Kirk Waters
Metadata Record Last Modified: 2023-03-22 09:53+0000
Metadata Record Published: 2023-03-13
Owner Org: OCMP
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2023-03-13
Metadata Review Frequency: 3 Years
Metadata Next Review Date: 2026-03-13