50180
2014 PSLC Lidar: Willapa River Valley (Delivery 1), WA
wa2014_pslc_willapa_delivery1_m4956_metadata
Data Set
Published / External
49401
Lidar - partner (no harvest)
Project
Completed
2015-04-07
In January, 2014 WSI, a Quantum Spatial (QSI) company, was contracted by the Puget Sound LiDAR Consortium (PSLC) to collect Light Detection and Ranging (LiDAR) data for the Willapa River Valley site in Washington. This initial delivery is for the 35,472 acre western area within the greater study area. Due to weather and resource constraints, the entire Area of Interest (AOI) has not yet been acquired. The remaining acquisition is scheduled to occur during the Fall 2014 leaf-off season. Data are being collected to aid PSLC in assessing the topographic and geophysical properties of the study area. This report accompanies the delivery 1 LiDAR data, and documents contract specifications, data acquisition procedures, processing methods, and analysis of the final dataset including LiDAR accuracy and density. Acquisition dates and acreage are shown in Table 1, a complete list of contracted deliverables provided to PSLC.
In addition to these lidar point data, the bare earth Digital Elevation Models (DEM) created from the lidar point data are also available. These data are available for custom download at the link provided in the URL section of this metadata record.
Provide high resolution surface elevation data from the Willapa River Valley Delivery 1 LiDAR dataset.
10824
A footprint of this data set may be viewed in Google Earth at:
https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/4956/supplemental/wa2014_pslc_willapa_delivery1_m4956.kmz
The final report for this project can be viewed at:
https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/4956/supplemental/wa2014_pslc_willapa_delivery1_m4956_lidarreport.pdf
Theme
Global Change Master Directory (GCMD) Science Keywords
EARTH SCIENCE
Theme
Global Change Master Directory (GCMD) Science Keywords
EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION
Theme
Global Change Master Directory (GCMD) Science Keywords
EARTH SCIENCE > OCEANS > COASTAL PROCESSES > COASTAL ELEVATION
Theme
ISO 19115 Topic Category
elevation
Spatial
Global Change Master Directory (GCMD) Location Keywords
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA
Spatial
Global Change Master Directory (GCMD) Location Keywords
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > WASHINGTON
Spatial
Global Change Master Directory (GCMD) Location Keywords
VERTICAL LOCATION > LAND SURFACE
Instrument
Global Change Master Directory (GCMD) Instrument Keywords
LIDAR > Light Detection and Ranging
Platform
Global Change Master Directory (GCMD) Platform Keywords
Airplane > Airplane
Office for Coastal Management
Charleston
SC
Data Set
None Planned
las
LiDAR points in LAZ format (ASPRS Classes 1,2)
none
Any conclusions drawn from the analysis of this information are not the responsibility
of Quantum Spatial, PSLC, NOAA, the Office for Coastal Management or its partners.
Please credit the Puget Sound LiDAR Consortium (PSLC) for these data. The PSLC is supported by the Puget Sound Regional Council and numerous partners in local, state, and tribal government.
Data Steward
2015-04-07
Organization
NOAA Office for Coastal Management
NOAA/OCM
coastal.info@noaa.gov
2234 South Hobson Ave
Charleston
SC
29405-2413
(843) 740-1202
https://coast.noaa.gov
NOAA Office for Coastal Management Home Page
Online Resource
Distributor
2015-04-07
Organization
NOAA Office for Coastal Management
NOAA/OCM
coastal.info@noaa.gov
2234 South Hobson Ave
Charleston
SC
29405-2413
(843) 740-1202
https://coast.noaa.gov
NOAA Office for Coastal Management Home Page
Online Resource
Metadata Contact
2015-04-07
Organization
NOAA Office for Coastal Management
NOAA/OCM
coastal.info@noaa.gov
2234 South Hobson Ave
Charleston
SC
29405-2413
(843) 740-1202
https://coast.noaa.gov
NOAA Office for Coastal Management Home Page
Online Resource
Point of Contact
2015-04-07
Organization
NOAA Office for Coastal Management
NOAA/OCM
coastal.info@noaa.gov
2234 South Hobson Ave
Charleston
SC
29405-2413
(843) 740-1202
https://coast.noaa.gov
NOAA Office for Coastal Management Home Page
Online Resource
Ground Condition
-123.753707
-123.68382
46.626452
46.560733
Range
2014-04-10
2014-04-14
Yes
Geographic 3D
EPSG:6319
NAD83(2011)
NAD83 (National Spatial Reference System 2011)
GRS 1980
6378137
298.257222101
1
Geodetic Latitude
Lat
degree
north
2
Geodetic Longitude
Lon
degree
east
3
Elipsoidal height
h
metre
up
Unclassified
This data can be obtained on-line at the following URL:
https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=4956;
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.
https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=4956
2015-04-07
Organization
NOAA Office for Coastal Management
Customized Download
Create custom data files by choosing data area, product type, map projection, file format, datum, etc.
Zip
Zip
https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/4956/index.html
2015-04-07
Organization
NOAA Office for Coastal Management
Bulk Download
Simple download of data files.
LAZ
LAS/LAZ - LASer
Zip
https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/4956/supplemental/wa2014_pslc_willapa_delivery1_m4956.kmz
Browse Graphic
Browse Graphic
kmz
This graphic shows the lidar coverage for the first delivery of the 2014 Willapa Valley acquisition.
https://coast.noaa.gov/dataviewer
NOAA's Office for Coastal Management (OCM) Data Access Viewer (DAV)
Online Resource
HTML
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.
https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=9479/details/9479
Custom DEM Download
Online Resource
Zip
Link to custom download, from the Data Access Viewer (DAV), the raster Digital Elevation Model (DEM) data that were created from this lidar data set.
https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/4956/supplemental/wa2014_pslc_willapa_delivery1_m4956_lidarreport.pdf
Lidar Report
Online Resource
pdf
Link to the lidar report.
2016-10-25
Date that the source FGDC record was last modified.
2017-11-14
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.
2018-02-08
Partial upload of Positional Accuracy fields only.
2018-03-13
Partial upload to move data access links to Distribution Info.
All discernible laser returns were processed for the output dataset. The discrepancy between native and delivered density will vary depending on terrain, land cover, and the prevalence of water bodies.
Ground survey points were collected using real time kinematic (RTK) and post-processed kinematic (PPK) survey techniques. A Trimble R7 base unit was positioned at a nearby monument to broadcast a kinematic correction to a roving Trimble R8 GNSS receiver. All GSP measurements were made during periods with a Position Dilution of Precision (PDOP) of less than 3.0 with at least six satellites in view of the stationary and roving receivers. When collecting RTK and PPK data, the rover records data while stationary for five seconds, then calculates the pseudorange position using at least three one-second epochs.; Quantitative Value: 0.02 meters, Test that produced the value: Relative errors for the position must be less than 1.5 cm horizontal and 2.0 cm vertical in order to be accepted.
The Root Mean Square Error (RMSE) of the vertical accuracy of delivery 1 is 0.125 ft. Please see the LiDAR data report for a discussion of the statistics related to this dataset.; Quantitative Value: 0.125 meters, Test that produced the value: Accuracy was assessed using 794 ground survey RTK (real time kinematic) and PPK (post processed kinematic) points.
LiDAR data has been collected and processed for all areas within the delivery 1 area.
All areas were surveyed with an opposing flight line side-lap of more than 50% (more than 100% overlap) in order to reduce laser shadowing and increase surface laser painting. To accurately solve for laser point position (geographic coordinates x, y and z), the positional coordinates of the airborne sensor and the attitude of the aircraft were recorded continuously throughout the LiDAR data collection mission. Position of the aircraft was measured twice per second (2 Hz) by an onboard differential GPS unit, and aircraft attitude was measured 200 times per second (200 Hz) as pitch, roll and yaw (heading) from an onboard inertial measurement unit (IMU). To allow for post-processing correction and calibration, aircraft and sensor position and attitude data are indexed by GPS time.
The NOAA Office for Coastal Management (OCM) downloaded topographic files in .laz format from PSLC's FTP site.
Puget Sound Lidar Consortium (PSLC)
Organization
Puget Sound Lidar Consortium
Originator
1
Acquisition. Quantum Spatial collected the Willapa River Valley Delivery 1 LiDAR data between 04/10/14 and 04/14/14. The survey used a Leica ALS70 laser system mounted in a Partenavia. Data was collected using a single pulse flight plan. Ground level GPS and aircraft IMU were collected during the flight.
Leica ALS70 Instrument Parameters: Beam diameter: 32 cm, Pulse rate: 180 - 199 kHz, Maximum returns: 4, Speed: 110 knots, Overlap: 70 %, Laser power: 71 %, Field of view (FOV): 30 degrees, Beam wavelength: 1064 nm, Frequency of GPS sampling: 2 Hz, Frequency of IMU sampling: 200 Hz, Swath width: 750 m, AGL: 1400 m, Average pulse density: 8.
2014-04-14T00:00:00
2
1. Flight lines and data were reviewed to ensure complete coverage of the study area and positional accuracy of the laser points.
2. Laser point return coordinates were computed using ALS Post Processor and IPAS TC software based on independent data from the LiDAR system, IMU, and aircraft.
3. The raw LiDAR file was assembled into flight lines per return with each point having an associated x, y, and z coordinate.
4. Visual inspection of swath to swath laser point consistencies within the study area were used to perform manual refinements of system alignment.
5. Custom algorithms were designed to evaluate points between adjacent flight lines. Automated system alignment was computed based upon randomly selected swath to swath accuracy measurements that consider elevation, slope, and intensities. Specifically, refinement in the combination of system pitch, roll and yaw offset parameters optimize internal consistency.
6. Noise (e.g., pits and birds) was filtered using ALS post processing software, based on known elevation ranges and included the removal of any cycle slips.
7. Using TerraScan and Microstation, ground classifications utilized custom settings appropriate to the study area.
8. The corrected and filtered return points were compared to the RTK and PPK ground survey points collected to verify the vertical accuracy.
9. The highest hit algorithm was used to create this highest hit DSM.
2014-07-25T00:00:00
3
The NOAA Office for Coastal Management (OCM) downloaded topographic files in .laz format from PSLC's FTP site. The files contained lidar elevation, intensity, return number, class, scan angle and GPS time measurements. 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 las files were converted from orthometric (NAVD88) heights to ellipsoidal heights using Geoid03, and from feet to meters.
2. The las files were converted from a Projected Coordinate System (WA SP South) to a Geographic Coordinate system (NAD83), converting from feet to decimal degrees.
3. Erroneous points were removed.
2015-08-19T00:00:00
Organization
Office for Coastal Management
OCM
2234 South Hobson Avenue
Charleston
SC
29405-2413
https://www.coast.noaa.gov/
66903
Data Set
2014 PSLC Lidar DEM: Willapa River Valley (Delivery 1), WA
Cross Reference
gov.noaa.nmfs.inport:50180
Anne Ball
2017-11-15T15:24:45
SysAdmin InPortAdmin
2023-10-17T16:12:16
2022-03-16
OCM Partners
OCMP
1002
Public
No
2022-03-16
1 Year
2023-03-16