2009 - 2010 PSLC LiDAR: USGS Wenas Valley
Data Set (DS) | OCM Partners (OCMP)GUID: gov.noaa.nmfs.inport:50154 | Updated: July 27, 2023 | Published / External
Summary
Short Citation
OCM Partners, 2024: 2009 - 2010 PSLC LiDAR: USGS Wenas Valley, https://www.fisheries.noaa.gov/inport/item/50154.
Full Citation Examples
The dataset encompasses portions of Wenas Valley in Kitittas and Yakima Counties, Washington.
The bare earth digital elevation models (DEMs) represent the earth's surface with all
vegetation and human-made structures removed. The bare earth DEMs were derived from
LiDAR data using TIN processing of the ground point returns. Some elevation values
have been interpolated across areas in the ground model where there is no elevation
data (e.g. over dense vegetation).
The DEM grid cell size is 3-ft. The projection is NAD83 (HARN) Washington State Plane,
South. The elevation units are in U.S. Survey Feet.
Watershed Sciences, Inc. collected the LiDAR and created this data set for the Puget
Sound LiDAR Consortium.
Watershed Sciences, Inc. (WS) initially collected 37,969 acres of Light Detection
and Ranging (LiDAR) data of the Wenas Valley area of interest (AOI) in Kittitas and Yakima
Counties, WA on October 28th, 2009. This data was delivered on November 21st, 2009.
After the AOI was clear of snow, the remaining 110,255 acres were collected on March
22nd and from June 12th to June 16th, 2010. The total deliverable area including a
100 m buffer is 148,224 acres.
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may no longer represent actual surface conditions.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
-120.9799304° W,
-120.5481886° E,
46.90926281° N,
46.71685056° S
2009-11-21 - 2010-06-16
Item Identification
Title: | 2009 - 2010 PSLC LiDAR: USGS Wenas Valley |
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Short Name: | wa2009_2010_usgs_pslc_wenasvalley_m2588_metadata |
Status: | Completed |
Publication Date: | 2013-11-18 |
Abstract: |
The dataset encompasses portions of Wenas Valley in Kitittas and Yakima Counties, Washington. The bare earth digital elevation models (DEMs) represent the earth's surface with all vegetation and human-made structures removed. The bare earth DEMs were derived from LiDAR data using TIN processing of the ground point returns. Some elevation values have been interpolated across areas in the ground model where there is no elevation data (e.g. over dense vegetation). The DEM grid cell size is 3-ft. The projection is NAD83 (HARN) Washington State Plane, South. The elevation units are in U.S. Survey Feet. Watershed Sciences, Inc. collected the LiDAR and created this data set for the Puget Sound LiDAR Consortium. Watershed Sciences, Inc. (WS) initially collected 37,969 acres of Light Detection and Ranging (LiDAR) data of the Wenas Valley area of interest (AOI) in Kittitas and Yakima Counties, WA on October 28th, 2009. This data was delivered on November 21st, 2009. After the AOI was clear of snow, the remaining 110,255 acres were collected on March 22nd and from June 12th to June 16th, 2010. The total deliverable area including a 100 m buffer is 148,224 acres. |
Purpose: |
Provide high resolution terrain elevation and land cover elevation data. |
Notes: |
10798 |
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/geoid18/2588/supplemental/wa2009_pslc_usgs_wenasvalley.KMZ Reports explaining collection and quality assurance is available at: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/2588/supplemental/wa2009_pslc_usgs_wenasvalley.pdf |
Keywords
Theme Keywords
Thesaurus | Keyword |
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ISO 19115 Topic Category |
elevation
|
UNCONTROLLED | |
None | LAZ |
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 LAZ format (ASPRS Classes 1,2) |
Entity Attribute Detail Citation: |
none |
Distribution Liability: |
Any conclusions drawn from the analysis of this information are not the responsibility of Watershed Sciences, PSLC, 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: | 2013-11-18 |
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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: | 2013-11-18 |
---|---|
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: | 2013-11-18 |
---|---|
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: | 2013-11-18 |
---|---|
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: | -120.9799304 | |
---|---|---|
E° Bound: | -120.5481886 | |
N° Bound: | 46.90926281 | |
S° Bound: | 46.71685056 |
Extent Group 1 / Time Frame 1
Time Frame Type: | Range |
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Start: | 2009-11-21 |
End: | 2010-06-16 |
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=2588 ; |
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=2588 |
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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/geoid18/2588/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/geoid18/2588/supplemental/wa2009_pslc_usgs_wenasvalley.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 2009-2010 Wenas Valley area in Washington. |
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: |
Elevations are recorded in floating-point meters and the vertical datum is ellipsoidal (GEOID03). |
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Horizontal Positional Accuracy: |
Horizontal positional accuracy for LiDAR is dependent upon the quality of the GPS/INS solution, sensor calibration and ground conditions at the time of data capture. The standard system results for horizontal accuracy are less than 1 meter. Not reported, assumed as 1.0 m. ; Quantitative Value: 1.0 meters, Test that produced the value: See LiDAR data report. |
Vertical Positional Accuracy: |
The vertical accuracy of the LiDAR data is described as the mean and standard deviation (sigma ~ ) of divergence of LiDAR point coordinates from RTK ground survey point coordinates. To provide a sense of the model predictive power of the dataset, the root mean square error (RMSE) for vertical accuracy is also provided. These statistics assume the error distributions for x, y, and z are normally distributed, thus we also consider the skew and kurtosis of distributions when evaluating error statistics. Statements of statistical accuracy apply to fixed terrestrial surfaces only and may not be applied to areas of dense vegetation or steep terrain. To calibrate laser accuracy for the LiDAR dataset, 3120 RTK ground check points were collected on fixed, hard-packed road surfaces within the survey area. ; Quantitative Value: 0.05 meters, Test that produced the value: The Root Mean Square Error (RMSE) of the data set is 0.17 ft (5.19 cm). Accuracy was assessed using 3120 ground survey (real time kinematic) points. Please see LiDAR data report for a discussion of statistics related to these datasets. |
Completeness Report: |
LiDAR data has been collected and processed for all areas within the project study area. |
Conceptual Consistency: |
LiDAR flight lines have been examined to ensure that there was at least 60% sidelap, there are minimal gaps between flightlines, and overlapping flightlines have consistent elevation values. Shaded relief images have been visually inspected for data errors such as pits, border artifacts, gaps, and shifting. The data was examined at a 1:2000 scale. |
Lineage
Process Steps
Process Step 1
Description: |
Acquisition. The LiDAR data was collected on October 28th, 2009, March 22, 2010 and June 12th-16th, 2010. The survey used both the Leica ALS50 Pase II and ALS 60 laser systems mounted in a Cessna Caravan 208. Near nadir scan angles were used to increase penetration of vegetation to ground surfaces. Ground level GPS and aircraft IMU were collected during the flight. |
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Process Step 2
Description: |
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 software, IPAS Pro GPS/INS software, and Waypoint GPS, 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 postprocessing 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 ground survey points collected to verify the vertical and horizontal accuracies. 9. Points were output as laser points, TINed and GRIDed surfaces |
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Process Step 3
Description: |
The NOAA Office for Coastal Management (OCM) downloaded topographic files in text format from PSLC's website. The files contained lidar easting, northing, elevation, intensity, return number, class, scan angle and GPS time measurements. The data were received in Washington State Plane South Zone 4601, 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 All-Return ASCII txt files were parsed to LAS files. 2. The All-Return ASCII files were converted from txt format to las format using LASTools' txt2las tool and reclassified to fit the OCM class list, N=1 (unclassified), G=2 (ground). 3. The las files were converted from orthometric (NAVD88) heights to ellipsoidal heights using Geoid03. 4. The las files' vertical units were converted from feet to meters, removing bad elevations. 5. The las files were converted from a Projected Coordinate System (WA SP South) to a Geographic Coordinate system (NAD83) 6. The las files' horizontal units were converted from feet to decimal degrees and converted to laz format. |
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Process Date/Time: | 2013-11-18 00:00:00 |
Catalog Details
Catalog Item ID: | 50154 |
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GUID: | gov.noaa.nmfs.inport:50154 |
Metadata Record Created By: | Anne Ball |
Metadata Record Created: | 2017-11-15 15:24+0000 |
Metadata Record Last Modified By: | Rebecca Mataosky |
Metadata Record Last Modified: | 2023-07-27 13:04+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 |