2005 Puget Sound LiDAR Consortium (PSLC) Topographic LiDAR: Lower Columbia River
Data Set (DS) | OCM Partners (OCMP)GUID: gov.noaa.nmfs.inport:50147 | Updated: August 9, 2022 | Published / External
Summary
Short Citation
OCM Partners, 2024: 2005 Puget Sound LiDAR Consortium (PSLC) Topographic LiDAR: Lower Columbia River, https://www.fisheries.noaa.gov/inport/item/50147.
Full Citation Examples
Terrapoint, on behalf of multiple agencies, collected topographic lidar of the Lower Columbia River area. Field data collection took place between the dates of January 10th and February 20th, 2005. The control network
and checkpoint surveys were performed from January 4th to February 12th, 2005. The project area covers approximately 890 square miles along the Columbia River, from the Bonneville Dam to the Pacific Ocean.
A total of 431 flightlines were required to cover the project area flightlines.
Terrapoint used a 40 kHz Airborne Laser Terrain Mapping System ALTMS sensor attached to a Navajo Twin-engin aircraft (C-FVZM). The mission was flown at 3500 feet above ground level at an average speed of 140 knots. The system
consists of a 36 degree full scan angle laser, a Trimble 4700 GPS receiver and a Honeywell H764 IMU unit. The nominal flightline spacing was 1070 feet with 30 to 50% sidelap.
The surveyed and processed data was received divided by funding agency. The agency responsible for funding each tile is represented as a number (0:COE, 1:DNR, 2:DOGAMI, 3:DOI) in the "User Data" field of each LAS file.
Distribution Information
-
Create custom data files by choosing data area, product type, map projection, file format, datum, etc.
-
Simple download of data files.
None
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be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual surface conditions.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. These data depict the heights at the time of the survey and are only accurate for that time.
Controlled Theme Keywords
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
-124.094973° W,
-121.92062° E,
46.474753° N,
45.401999° S
2005-01-10 - 2005-02-20
Item Identification
Title: | 2005 Puget Sound LiDAR Consortium (PSLC) Topographic LiDAR: Lower Columbia River |
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Short Name: | wa2005_pslc_lowercolariver_m2535_metadata |
Status: | Completed |
Publication Date: | 2013-08 |
Abstract: |
Terrapoint, on behalf of multiple agencies, collected topographic lidar of the Lower Columbia River area. Field data collection took place between the dates of January 10th and February 20th, 2005. The control network and checkpoint surveys were performed from January 4th to February 12th, 2005. The project area covers approximately 890 square miles along the Columbia River, from the Bonneville Dam to the Pacific Ocean. A total of 431 flightlines were required to cover the project area flightlines. Terrapoint used a 40 kHz Airborne Laser Terrain Mapping System ALTMS sensor attached to a Navajo Twin-engin aircraft (C-FVZM). The mission was flown at 3500 feet above ground level at an average speed of 140 knots. The system consists of a 36 degree full scan angle laser, a Trimble 4700 GPS receiver and a Honeywell H764 IMU unit. The nominal flightline spacing was 1070 feet with 30 to 50% sidelap. The surveyed and processed data was received divided by funding agency. The agency responsible for funding each tile is represented as a number (0:COE, 1:DNR, 2:DOGAMI, 3:DOI) in the "User Data" field of each LAS file. |
Purpose: |
The purpose of this project was to provide a high quality DEM of the site for multiple participating agencies. |
Notes: |
10791 |
Supplemental Information: |
A footprint of this data set may be viewed in Google Earth at: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/2535/supplemental/wa2005_pslc_lowercolariver_geo_footprint.KMZ A project report for this project from the vendor may be obtained at: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/2535/supplemental/wa2005_pslc_lowercolariver_projectreport.pdf |
Keywords
Theme Keywords
Thesaurus | Keyword |
---|---|
ISO 19115 Topic Category |
elevation
|
Physical Location
Organization: | Office for Coastal Management |
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City: | Charleston |
State/Province: | SC |
Data Set Information
Data Set Scope Code: | Data Set |
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Maintenance Frequency: | As Needed |
Data Presentation Form: | las |
Entity Attribute Overview: |
LiDAR points in LAS 1.2 format (ASPRS Classes 1,2,6,7) |
Entity Attribute Detail Citation: |
none |
Distribution Liability: |
Any conclusions drawn from the analysis of this information are not the responsibility of Terrapoint, PSLC, NASA, DOI, COE, DOGAMI, DNR, NOAA, the Office for Coastal Management or its partners. |
Data Set Credit: | Please credit the Puget Sound LiDAR Consortium (PSLC) for these data. The PSLC is supported by the Puget Sound Regional Council, the National Aeronautical and Space Administration (NASA), the United States Geological Survey (USGS) and numerous partners in local, state, and tribal government. |
Support Roles
Data Steward
Date Effective From: | 2013-08 |
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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: | 2013-08 |
---|---|
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
Date Effective From: | 2013-08 |
---|---|
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
Date Effective From: | 2013-08 |
---|---|
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 |
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Extent Group 1
Extent Group 1 / Geographic Area 1
W° Bound: | -124.094973 | |
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E° Bound: | -121.92062 | |
N° Bound: | 46.474753 | |
S° Bound: | 45.401999 |
Extent Group 1 / Time Frame 1
Time Frame Type: | Range |
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Start: | 2005-01-10 |
End: | 2005-02-20 |
Spatial Information
Spatial Representation
Representations Used
Vector: | Yes |
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Access Information
Security Class: | Unclassified |
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Data Access Procedure: |
This data can be obtained on-line at the following URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=2535 ; |
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. These data depict the heights at the time of the survey and are only accurate for that time. |
Distribution Information
Distribution 1
Download URL: | https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=2535 |
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Distributor: | |
File Name: | Customized Download |
Description: |
Create custom data files by choosing data area, product type, map projection, file format, datum, etc. |
Distribution 2
Download URL: | https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/2535/index.html |
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Distributor: | |
File Name: | Bulk Download |
Description: |
Simple download of data files. |
URLs
URL 1
URL: | https://coast.noaa.gov/dataviewer |
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URL Type: |
Online Resource
|
URL 2
URL: | https://coast.noaa.gov |
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URL Type: |
Online Resource
|
URL 3
URL: | https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/2535/supplemental/wa2005_pslc_lowercolariver_geo_footprint.KMZ |
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Name: | Browse Graphic |
URL Type: |
Browse Graphic
|
File Resource Format: | kmz |
Description: |
This graphic shows the lidar coverage for the Lower Columbia River (from the Bonneville Dam to the Pacific Ocean) along the Washington/Oregon border. |
Activity Log
Activity Log 1
Activity Date/Time: | 2016-05-23 |
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Description: |
Date that the source FGDC record was last modified. |
Activity Log 2
Activity Date/Time: | 2017-11-14 |
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Description: |
Converted from FGDC Content Standards for Digital Geospatial Metadata (version FGDC-STD-001-1998) using 'fgdc_to_inport_xml.pl' script. Contact Tyler Christensen (NOS) for details. |
Activity Log 3
Activity Date/Time: | 2018-02-08 |
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Description: |
Partial upload of Positional Accuracy fields only. |
Activity Log 4
Activity Date/Time: | 2018-03-13 |
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Description: |
Partial upload to move data access links to Distribution Info. |
Data Quality
Accuracy: |
See Vertical Accuracy Report below. |
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Horizontal Positional Accuracy: |
Not applicable for pure elevation data: every XY error has an associated Z error. |
Vertical Positional Accuracy: |
The GPS and inertial data were processed in tandem to achieve the best positional result. Once the position and attitude of the aircraft were known at each epoch (1-second intervals), then these data were integrated with the laser ranges to provide a position for each data point on the ground. The data were then processed using the proprietary laser processing software suite to produce coordinates. Each flight involved setting up two base stations to collect data. Utilizing two base stations ensures GPS data collection in the event that the main base station fails. For all flights the GPS data were of high quality. This minimized the absolute error for the aircraft position. To verify that the accuracy criteria were being achieved, 10,092 kinematic checkpoints were compared with a triangulated surface generated from the bald earth LiDAR points. ; Quantitative Value: 0.25 meters, Test that produced the value: AccuracyZ at the 95% confidence level (2 sigma) for soft/vegetated surface in flat or rolling terrain. Units in meters. Accuracy may be significantly less in steep areas and under heavy forest canopy. |
Completeness Report: |
Elevation data has been collected for all areas inside project boundaries. |
Conceptual Consistency: |
Once the data setup has taken place the manual quality control of the surface occurs. This process consists of visually examining the LiDAR points within Terrascan and correcting errors that occurred during the automated process. These corrections include verifying that all non ground elements, such as vegetation and buildings are removed from the ground model and that all small terrain undulations such as road beds, dykes, rock cuts and hill tops are present within the model. This process is done with the help of hillshades, contours, profiles and crosssections. To correct misclassifications, a full suite of Terrascan and custom inhouse data tools are used. |
Lineage
Process Steps
Process Step 1
Description: |
The following software was used to reduce the GPS kinematic data, compute the 3-D laser points, classify and edit laser points, produce shaded relief images and transform the ellipsoidal heights to Orthometric: ArcView, Flykin, Microstation, TerraScan, TerraModeler, TerraModel, and Terrapoint Proprietary LiDAR processing software |
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Process Date/Time: | 2005-01-01 00:00:00 |
Process Step 2
Description: |
The NOAA Office for Coastal Management (OCM) received topographic files in ASCII .TXT format. The files contained lidar elevation measurements, GPS time measurements (week/second), number of returns, return number, scan angle, intensity, and classification. The data were received in Washington State Plane South Zone 4602, NAD83 coordinates and were vertically referenced to NAVD88 using the Geoid03 model. The vertical units of the data were feet. OCM performed the following processing for data storage and Digital Coast provisioning purposes: 1. The ASCII .TXT files were run through a parser to convert GPS Week/Second Time to Adjusted Standard GPS Time and change the format of the Classification field. 2. The parsed ASCII .TXT files were converted to LAS version 1.2 using LAStools' txt2las tool. 3. The User Data field was set depending on agency which funded the tile. The User Data values are: 0 (COE), 1 (DNR), 2 (DOGAMI), 3 (DOI). 4. The topographic las files were converted from orthometric (NAVD88) heights to ellipsoidal heights using Geoid03. 5. The topographic las files were converted from a Projected Coordinate System (WA SP South) to a Geographic Coordinate system (NAD 83). 6. The topographic las files' vertical units were converted from feet to meters. 7. The topographic las files' horizontal units were converted from feet to decimal degrees. |
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Process Date/Time: | 2013-08-01 00:00:00 |
Catalog Details
Catalog Item ID: | 50147 |
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GUID: | gov.noaa.nmfs.inport:50147 |
Metadata Record Created By: | Anne Ball |
Metadata Record Created: | 2017-11-15 15:24+0000 |
Metadata Record Last Modified By: | SysAdmin InPortAdmin |
Metadata Record Last Modified: | 2022-08-09 17:11+0000 |
Metadata Record Published: | 2022-03-16 |
Owner Org: | OCMP |
Metadata Publication Status: | Published Externally |
Do Not Publish?: | N |
Metadata Last Review Date: | 2022-03-16 |
Metadata Review Frequency: | 1 Year |
Metadata Next Review Date: | 2023-03-16 |