2018 USFS Lidar DEM: National Forest Locations (WA, OR)
OCM Partners
Data Set
(DS)
| ID: 69456
| Published / External
Created: 2023-03-22
|
Last Modified: 2023-08-15
Project (PRJ) | ID: 49404
ID: 69456
Data Set (DS)
* Discovery• First Pass
» Metadata Rubric
Item Identification
* » Title | 2018 USFS Lidar DEM: National Forest Locations (WA, OR) |
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Short Name | 2018 WA OR Forests USFS DEM m9804 |
* Status | Completed |
Creation Date | 2023-03-13 |
Revision Date | |
• Publication Date | |
* » Abstract |
Digital Elevation Model created from leaf-on airborne LiDAR 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. |
Other Citation Details | |
• Supplemental Information | |
DOI (Digital Object Identifier) | |
DOI Registration Authority | |
DOI Issue Date |
Keywords
Theme Keywords
Thesaurus | Keyword |
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Global Change Master Directory (GCMD) Science Keywords | EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY |
Global Change Master Directory (GCMD) Science Keywords | EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION > DIGITAL ELEVATION/TERRAIN MODEL (DEM) |
ISO 19115 Topic Category | elevation |
Temporal Keywords
Thesaurus | Keyword |
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* Spatial Keywords
Thesaurus | Keyword |
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Global Change Master Directory (GCMD) Location Keywords | CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > OREGON |
Stratum Keywords
Thesaurus | Keyword |
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Instrument Keywords
Thesaurus | Keyword |
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Global Change Master Directory (GCMD) Instrument Keywords | LIDAR > Light Detection and Ranging |
Platform Keywords
Thesaurus | Keyword |
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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 |
• Country | USA |
• » Location Description |
Data Set Information
* Data Set Scope Code | Data Set |
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• Data Set Type | Elevation |
• Maintenance Frequency | None Planned |
Maintenance Note | |
» Data Presentation Form | Model (digital) |
• Entity Attribute Overview | |
Entity Attribute Detail Citation | |
Entity Attribute Detail URL | |
Distribution Liability | |
Data Set Credit | U.S. Forest Service; Atlantic, Inc. |
Support Roles
* » Support Role | Data Steward |
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* » Date Effective From | 2023-03-13 |
Date Effective To | |
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 |
Fax | |
Mobile | |
URL | https://coast.noaa.gov |
Business Hours | |
Contact Instructions |
* » Support Role | Distributor |
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* » Date Effective From | 2023-03-13 |
Date Effective To | |
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 |
Fax | |
Mobile | |
URL | https://coast.noaa.gov |
Business Hours | |
Contact Instructions |
* » Support Role | Metadata Contact |
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* » Date Effective From | 2023-03-13 |
Date Effective To | |
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 |
Fax | |
Mobile | |
URL | https://coast.noaa.gov |
Business Hours | |
Contact Instructions |
* » Support Role | |
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* » Date Effective From | |
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* Contact Instructions |
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* Contact Instructions |
Extents
Currentness Reference | Ground Condition |
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Extent Group 1
Extent Description |
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Extent Group 1 / Geographic Area 1
* » W° Bound | -121.19468639 |
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* » E° Bound | -121.11624439 |
* » N° Bound | 42.89437835 |
* » S° Bound | 42.76640243 |
* » Description |
Sycan Marsh |
Extent Group 1 / Vertical Extent
EPSG Code | |
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Vertical Minimum | |
Vertical Maximum |
Extent Group 1 / Time Frame 1
* » Time Frame Type | Range |
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* » Start | 2018-06-29 |
End | 2019-01-24 |
Alternate Start As Of Info | |
Alternate End As Of Info | |
Description |
Acquisition dates based on tile filenames. |
Extent Group 2
Extent Description |
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Extent Group 2 / Geographic Area 1
* » W° Bound | -121.5859 |
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* » E° Bound | -121.2956 |
* » N° Bound | 45.51534 |
* » S° Bound | 45.2585 |
* » Description |
East Zone |
Extent Group 2 / Geographic Area 2
* » W° Bound | -120.59047 |
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* » E° Bound | -119.8764 |
* » N° Bound | 48.80922 |
* » S° Bound | 48.23965 |
* » Description |
Methow Twisp |
Extent Group 2 / Vertical Extent
EPSG Code | |
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Vertical Minimum | |
Vertical Maximum |
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* » Time Frame Type | |
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Description |
Extent Group 3
Extent Description |
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Extent Group 3 / Geographic Area 1
* » W° Bound | -119.49611 |
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* » E° Bound | -119.025902 |
* » N° Bound | 44.40912 |
* » S° Bound | 44.28255 |
* » Description |
North Aldrich |
Extent Group 3 / Vertical Extent
EPSG Code | |
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Vertical Minimum | |
Vertical Maximum |
Extent Group 3 / Time Frame
* » Time Frame Type | |
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Description |
Extent Group 4
Extent Description |
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Extent Group 4 / Geographic Area 1
* » W° Bound | -119.04997 |
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* » E° Bound | -118.7215075 |
* » N° Bound | 43.86232 |
* » S° Bound | 43.72728 |
* » Description |
Rattlesnake |
Extent Group 4 / Vertical Extent
EPSG Code | |
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Vertical Minimum | |
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Extent Group 4 / Time Frame
* » Time Frame Type | |
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Description |
Extent Group 5
Extent Description |
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Extent Group 5 / Geographic Area 1
* » W° Bound | -120.96962 |
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* » E° Bound | -120.08232 |
* » N° Bound | 43.00656 |
* » S° Bound | 41.991773 |
* » Description |
Thomas Creek |
Extent Group 5 / Vertical Extent
EPSG Code | |
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* » Time Frame Type | |
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* » Start | |
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Description |
Extent Group 6
Extent Description |
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Extent Group 6 / Geographic Area 1
* » W° Bound | -118.79006 |
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* » E° Bound | -118.677443 |
* » N° Bound | 44.2937 |
* » S° Bound | 44.12172 |
* » Description |
Upper Bear Lake |
Extent Group 6 / Vertical Extent
EPSG Code | |
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Description |
Spatial Information
Spatial Resolution
Angular Distance | |
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Angular Distance Units | |
Horizontal Distance | 0.34 |
Horizontal Distance Units | Meter |
Vertical Distance | |
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Equivalent Scale Denominator | |
Level of Detail Description |
Spatial Representation
Grid Representation Used? | Yes |
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Vector Representation Used? | |
Text / Table Representation Used? | |
TIN Representation Used? | |
Stereo Model Representation Used? | |
Video Representation Used? |
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Reference Systems
Reference System
EPSG Code | EPSG:5703 | ||||||||||||||||||||||||||||
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Reference System
EPSG Code | EPSG:9674 | ||||||||||||||||||||||||||||
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Access Information
* » Security Class | Unclassified |
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* Security Classification System | |
Security Handling Description | |
• Data Access Policy |
Public access. |
» Data Access Procedure | |
• » Data Access Constraints |
None |
• Data Use Constraints |
None |
Metadata Access Constraints | |
Metadata Use Constraints |
Distribution Information
Start Date | 2023-03-13 |
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End Date | Present |
» Download URL | https://chs.coast.noaa.gov/htdata/raster5/elevation/USFS_Forests_2018_9804 |
Distributor | NOAA Office for Coastal Management (NOAA/OCM) (2023-03-13 - Present) |
File Name | |
Description |
Bulk download of tiles. This will be in an orthometric vertical datum, contrary to this metadata. |
File Date/Time | |
File Type | GeoTIFF |
File Size | |
Application Version | |
Compression | |
Review Status |
Start Date | 2023-03-13 |
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End Date | Present |
» Download URL | https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=9804/details/9804 |
Distributor | NOAA Office for Coastal Management (NOAA/OCM) (2023-03-13 - Present) |
File Name | |
Description |
Custom download of data allowing subsetting, change of projection, and generation of derived products. |
File Date/Time | |
File Type | Zip |
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Compression | Zip |
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URLs
URL | https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9774/supplemental/18031_All_2018_AOIs.pdf |
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Name | Data Report |
URL Type | Online Resource |
File Resource Format | |
Description |
Data report from the lidar acquisition contractor. |
URL | https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9774/supplemental/USFS_2018_region6_extent_m9774.kmz |
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Name | Browse Graphic |
URL Type | Browse Graphic |
File Resource Format | KMZ |
Description |
KMZ showing the area covered by the data. |
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Activity Log
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Issues
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Technical Environment
Description |
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Data Quality
Representativeness | |
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Accuracy | |
Analytical Accuracy | |
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. |
Quantitation Limits | |
Bias | |
Comparability | |
Completeness Measure | |
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Completeness Report | |
Conceptual Consistency | |
» Quality Control Procedures Employed |
Data Management
» Have Resources for Management of these Data Been Identified? | Yes |
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» 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 |
» If Distributor (Data Hosting Service) is Needed, Please Indicate | |
» Approximate Delay Between Data Collection and Dissemination | |
» If Delay is Longer than Latency of Automated Processing, Indicate Under What Authority Data Access is Delayed | |
» Actual or Planned Long-Term Data Archive Location | NCEI-NC |
» Approximate Delay Between Data Collection and Archiving | |
» How Will the Data Be Protected from Accidental or Malicious Modification or Deletion Prior to Receipt by the Archive? |
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. |
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Sources
Citation Title | DEM from classified lidar data |
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Contact Role Type | Originator |
Contact Type | Organization |
Contact Name | US Forest Service |
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Process Steps
Process Step Number | 1 |
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» 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. |
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Source |
Process Step Number | 2 |
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» 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. |
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Source |
Process Step Number | 3 |
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» 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 â¤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. |
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Process Step Number | 4 |
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» 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. |
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Source |
Process Step Number | 5 |
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» 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 |
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Process Step Number | 6 |
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» Description |
Data were received by NOAA Office for Coastal Management from the U.S. Forest Service with USFS region 6 Albers coordinates in ERDAS Imagine format. Data were converted to cloud optimized GeoTiff format. |
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 | DEM from classified lidar data |
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Acquisition Information
Instruments
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FAQs
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Child Items
Rubric scores updated every 15m
Score | Type | Title |
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Related Items
Item Type | Relationship Type | Title |
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Data Set (DS) | Cross Reference |
2018 USFS Lidar: National Forest Locations (WA, OR) Lidar point cloud used to make this DEM |
Catalog Details
Catalog Item ID | 69456 |
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Metadata Record Created By | Kirk Waters |
Metadata Record Created | 2023-03-22 09:54+0000 |
Metadata Record Last Modified By | SysAdmin InPortAdmin |
» Metadata Record Last Modified | 2023-08-15 17:09+0000 |
Metadata Record Published | 2023-03-24 |
Owner Org | OCMP |
Metadata Publication Status | Published Externally |
Do Not Publish? | N |
Metadata Workflow State | Published / External |
Metadata Last Review Date | 2023-03-13 |
Metadata Review Frequency | 3 Years |
Metadata Next Review Date | 2026-03-13 |
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