2012 USFS Lidar: Colville National Forest, WA
Data Set (DS) | OCM Partners (OCMP)GUID: gov.noaa.nmfs.inport:69264 | Updated: October 17, 2023 | Published / External
Summary
Short Citation
OCM Partners, 2025: 2012 USFS Lidar: Colville National Forest, WA, https://www.fisheries.noaa.gov/inport/item/69264.
Full Citation Examples
Light Detection and Ranging data (lidar) of the Colville National Forest Study Area. The requested lidar area of interest (AOI) totals approximately 400 square miles, or 256,155 acres. This area was buffered to ensure data coverage, resulting in a total area flown (TAF) of 282,901 acres.
Distribution Information
-
Custom download allowing user selection of area, projection, format, etc.
-
LAS/LAZ - LASer
Bulk download of files. These are in orthometric NAVD88 vertical datum.
None
None
Controlled Theme Keywords
elevation, TERRAIN ELEVATION
Child Items
No Child Items for this record.
Contact Information
Metadata Contact
NOAA Office for Coastal Management (NOAA/OCM)
coastal.info@noaa.gov
(843) 740-1202
https://coast.noaa.gov
Extents
-118.89° W,
-118.36° E,
49.01° N,
48.5114° S
2012-10-03 - 2012-10-09
Airborne lidar collection period.
Item Identification
Title: | 2012 USFS Lidar: Colville National Forest, WA |
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Short Name: | 2012 Colville lidar m9754 |
Status: | Completed |
Creation Date: | 2012-11-26 |
Publication Date: | 2023-02-10 |
Abstract: |
Light Detection and Ranging data (lidar) of the Colville National Forest Study Area. The requested lidar area of interest (AOI) totals approximately 400 square miles, or 256,155 acres. This area was buffered to ensure data coverage, resulting in a total area flown (TAF) of 282,901 acres. |
Purpose: |
Provide a lidar point cloud for forestry management. |
Notes: |
This metadata was created years after the data collection based upon the available project report from the lidar contractor. |
Keywords
Theme Keywords
Thesaurus | Keyword |
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Global Change Master Directory (GCMD) Science Keywords |
EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION
|
ISO 19115 Topic Category |
elevation
|
Spatial Keywords
Thesaurus | Keyword |
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Global Change Master Directory (GCMD) Location Keywords |
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > WASHINGTON
|
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 |
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Data Set Information
Data Set Scope Code: | Data Set |
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Data Set Type: | Elevation |
Maintenance Frequency: | As Needed |
Data Presentation Form: | Model (digital) |
Entity Attribute Overview: |
LAS format data with attributes of x, y, z, intensity, seconds of gps week, |
Entity Attribute Detail URL: | https://www.asprs.org/wp-content/uploads/2010/12/asprs_las_format_v12.pdf |
Data Set Credit: | US Forest Service; Watershed Sciences, Inc. |
Support Roles
Data Steward
Date Effective From: | 2023-02-09 |
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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
Date Effective From: | 2023-02-09 |
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Date Effective To: | |
Contact (Organization): | Office for Coastal Management (OCM) |
Address: |
2234 South Hobson Avenue Charleston, SC 29405-2413 |
URL: | https://www.coast.noaa.gov/ |
Metadata Contact
Date Effective From: | 2023-02-09 |
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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
Extent Group 1
Extent Description: |
Colville National Forest Study Area |
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Extent Group 1 / Geographic Area 1
W° Bound: | -118.89 | |
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E° Bound: | -118.36 | |
N° Bound: | 49.01 | |
S° Bound: | 48.5114 |
Extent Group 1 / Time Frame 1
Time Frame Type: | Range |
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Start: | 2012-10-03 |
End: | 2012-10-09 |
Description: |
Airborne lidar collection period. |
Spatial Information
Spatial Resolution
Horizontal Distance: | 0.6 Meter |
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Spatial Representation
Representations Used
Vector: | Yes |
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Vector Representation 1
Point Object Present?: | Yes |
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Point Object Count: | 4692951642 |
Reference Systems
Reference System 1
Coordinate Reference System |
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Access Information
Security Class: | Unclassified |
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Data Access Constraints: |
None |
Data Use Constraints: |
None |
Metadata Access Constraints: |
None |
Metadata Use Constraints: |
None |
Distribution Information
Distribution 1
Start Date: | 2023-02-09 |
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End Date: | Present |
Download URL: | https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=9754 |
Distributor: | Office for Coastal Management (OCM) (2023-02-09 - Present) |
Description: |
Custom download allowing user selection of area, projection, format, etc. |
File Type (Deprecated): | Zip |
Compression: | Zip |
Distribution 2
Start Date: | 2023-02-09 |
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End Date: | Present |
Download URL: | https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9754/index.html |
Distributor: | Office for Coastal Management (OCM) (2023-02-09 - Present) |
Description: |
Bulk download of files. These are in orthometric NAVD88 vertical datum. |
File Type (Deprecated): | LAZ |
Distribution Format: | LAS/LAZ - LASer |
Compression: | Zip |
URLs
URL 1
URL: | https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/9754/supplemental/Technical_Data_Report_Colville.pdf |
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Name: | Colville Data Report |
URL Type: |
Online Resource
|
File Resource Format: | |
Description: |
Data report from the contractor. Represents the data as delivered to USFS. Modifications have occurred to the data, as noted in this metadata. The report also describes imagery products that NOAA did not receive. |
Data Quality
Vertical Positional Accuracy: |
absolute accuracy RMSE = 0.05 meters standard deviation = 0.05 meters Based on checkpoint data. No independent survey data were collected. This is "compiled to meet" in accordance with ASPRS guidelines. |
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Lineage
Sources
Classified point cloud
Contact Role Type: | Originator |
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Contact Type: | Organization |
Contact Name: | USFS |
Process Steps
Process Step 1
Description: |
Airborne acquisition was conducted between 10:00am and 2:00pm each day. The LiDAR survey utilized a Leica ALS50 sensor mounted in a Cessna Caravan. The system was set to acquire greater than 114,600 laser pulses per second and flown at 2000 meters above ground level (AGL), capturing a scan angle of ±14 degrees from nadir. These settings are developed to yield points with an average native pulse density of 2 points per square meter over terrestrial surfaces. Aircraft position was measured twice per second (2 Hz) by an onboard differential GPS unit. Aircraft attitude is described as pitch, roll, and yaw (heading) and was measured 200 times per second (200 Hz) from an onboard inertial measurement unit (IMU). The study area was surveyed with opposing flight line side-lap of at least 60% (greater than 100% overlap) to reduce laser shadowing and increase surface laser painting. The system allows up to four range measurements per pulse, and all discernable laser returns were processed for the output dataset. |
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Process Date/Time: | 2012-10-09 00:00:00 |
Process Step 2
Description: |
Resolve GPS kinematic corrections for aircraft position data using kinematic aircraft GPS (Collected at 2 Hz) and static ground GPS (1 Hz) data collected over geodetic controls using POSGNSS v. 5.3, Trimble Business Center v. 2.81, PosPacMMS v 5.4 Develop a smoothed best estimate of trajectory (SBET) file that blends post-processed aircraft position with attitude data. Sensor heading, position, and attitude are calculated throughout the survey using POSGNSS v. 5.3, PosPacMMS v5.4 Calculate laser point position by associating SBET information to each laser point return time, with offsets relative to scan angle, intensity, etc. included. This process creates the raw laser point cloud data for the entire survey in *.las (ASPRS v1.2) format, in which each point maintains the corresponding scan angle, return number (echo), intensity, and x, y, z information. These data are converted to orthometric elevation (NAVD88) by applying a Geoid 12 correction using OPTECH LiDAR Mapping Suite (LMS) v. 2.1 Import raw laser points into subset bins (less than 500 MB, to accommodate file size constraints in processing software). Filter for noise and perform manual relative accuracy calibration. Ground points are then classified for individual flight lines to be used for relative accuracy testing and calibration using TerraScan v.12, Custom Watershed Sciences software Test relative accuracy using ground classified points per each flight line. Perform automated line-to-line calibrations for system attitude parameters (pitch, roll, heading), mirror flex (scale) and GPS/IMU drift. Calibrations are performed on ground classified points from paired flight lines. Every flight line is used for relative accuracy calibration using TerraMatch v.12, TerraScan v.12, Custom Watershed Sciences software. Assess Fundamental vertical accuracy via direct comparisons of ground classified points to ground RTK survey data with TerraScan v.12 |
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Process Date/Time: | 2012-11-20 00:00:00 |
Process Step 3
Description: |
Classified point clouds were received by NOAA from US Forest Service in NAD83(2011) UTM zone 11 meters, NAVD88/Geoid12. For ingest into the Digital Coast Data Access Viewer, the data were converted to geographic coordinates and the geoid model was removed. |
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Process Date/Time: | 2023-02-09 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 point cloud |
Catalog Details
Catalog Item ID: | 69264 |
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GUID: | gov.noaa.nmfs.inport:69264 |
Metadata Record Created By: | Kirk Waters |
Metadata Record Created: | 2023-02-10 13:34+0000 |
Metadata Record Last Modified By: | SysAdmin InPortAdmin |
Metadata Record Last Modified: | 2023-10-17 16:12+0000 |
Metadata Record Published: | 2023-02-14 |
Owner Org: | OCMP |
Metadata Publication Status: | Published Externally |
Do Not Publish?: | N |
Metadata Last Review Date: | 2023-02-09 |
Metadata Review Frequency: | 3 Years |
Metadata Next Review Date: | 2026-02-09 |