Dataset Identification:
- USGS Contract Number: 01CRCN0014 In Spring, 2006 Sanborn was contracted by the USGS to survey aprocimately 1,735 square miles of western Whatcom and Skagit Counties in Washington state. All data was collected during ideal conditions (rivers at or below mean level, leaf off, etc.). For this collect two sensors were used: The Leica ALS-50 (High Relief Collection) and Optech 2050 (High and Low Relief Collection). LiDAR calibrations were performed to determine and therefore eliminate systematic biases that occur between the the two sensors. Once the biases were determined they were modeled out. The Leica ALS-50 produced an average point spacing of 1.4 meters. The Optech 2050 produced an average point spacing of 1.3 meters. All points are classified as Class 2 (Ground) which includes water points and any possibly remaining artifacts. Leica ALS-50 LiDAR Acquisition Paramters: Avg. Altitude: 1,500 meters AGL Airspeed: ~120 Knots Scan Freq: 36 Hertz Scan Width Half Angle: 36 Degrees Pulse Rate: 60,000 Hertz Overlap: 44-60% Optech 2050 LiDAR Acquisition Parameters: Avg. Altitude: 1,200 meters AGL Airspeed: ~120 Knots Scan Freq: 30 Hertz Scan Width Half Angle: 40 Degrees Pulse Rate: 50,000 Hertz Overlap: 30-50%
- Title 2006 U.S. Geological Survey (USGS) Bare Earth Topographic LiDAR: North Puget Sound, Washington
- publication Date 2013-01-01
- organisation Name NOAA's Ocean Service, Office for Coastal Management (OCM)
- Contact information
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- Address
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- , Charleston, SC
- organisation Name Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Office for Coastal Management (OCM)
- organisation Name United States Geological Survey (USGS)
- organisation Name
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- Linkage for online resource
- organisation Name
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- Linkage for online resource
- organisation Name
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- Linkage for online resource
- organisation Name
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- Linkage for online resource
Theme keywords (theme):
Topography/Bathymetry
Elevation
Model
LiDAR
LAS
Remote Sensing
- Title none
Location keywords:
US
Washington
North Puget Sound
Whatcom County
Skagit County
- Title None
purpose:
Browse image (thumbnail):
- maintenance or update frequency: asNeeded
- Constraints
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- Use limitation statement:
- Any conclusions drawn from the analysis of this information are not the responsibility of Photo Science, NOAA, GADNR, the Office for Coastal Management or its partners.
- Legal Constraints
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- use constraint: otherRestrictions
- Other constraints
- 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.
- Legal Constraints
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- Access Constraints otherRestrictions
- Other constraints
- Access Constraints: None
Resource extent
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- westBoundLongitude -85.215673
- eastBoundLongitude -83.908630
- northBoundLatitude 34.576794
- southBoundLatitude 32.854996
Geographic Bounding Box - Temporal Extent
Geographic Extent
2006-05-05
2006-09-03
- The third-party QA report for this data set may be accessed at: ftp://coast.noaa.gov/pub/DigitalCoast/lidar1_z/geoid12a/data/1451/supplemental/2006_NorthPugetSound_lidar_Task_Order.pdf A footprint of this data set may be viewed in Google Earth at: ftp://coast.noaa.gov/pub/DigitalCoast/lidar1_z/geoid12a/data/1451/supplemental/2006_NorthPugetSound_lidar_geo_footprint.kmz
- Sanborn acquired and post-processed the LiDAR for North Puget Sound.
Content information: feature catalog description
- Included With Dataset
Data quality information
Scope of quality information
- name Of Measure Horizontal Positional Accuracy Report
- evaluation Method Description The LiDAR data was compiled to meet a 1 meter horizontal accuracy. The calibration of the LiDAR sensor itself and the calibration process of the data produced by this sensor ensure that this accuracy is met.
- name Of Measure Horizontal Positional Accuracy
- measure Description Value stated as RMSE @ 95% confidence in meters
- Quantitative Result
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- result value 100
- value Units
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- name Of Measure Vertical Positional Accuracy Report
- evaluation Method Description The LiDAR data was tested by Sanborn for vertical accuracy. Sanborn collected a total of 60 ground control points for use in verifying the vertical accuracy of the classified LiDAR data in North Puget Sound. Only 45 ground control points proved valid. These points were tested against the classified LiDAR data.
- name Of Measure Vertical Positional Accuracy
- measure Description RMSEz in meters
- Quantitative Result
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- result value 0.55
- value Units
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- evaluation Method Description Datasets contain complete coverage of tiles except where previously discussed.
- measure Description Deliverables were tested by Sanborn for vertical accuracy and consistency. There are two small unsurveyed areas near the North Fork Nooksack River. There are three areas of sparse returns located along Finney Creek south of Concrete, near Marblemount and along the Skagit River near Ross Dam.
Resource distribution information
Distributor
- organisation Name NOAA Office for Coastal Management
- Contact information
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- Telephone
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- Voice 843-740-1202
- Address
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- 2234 South Hobson Avenue, Charleston, SC, 29405-2413
- electronic Mail Address coastal.info@noaa.gov
- maintenance or update frequency: annually
- notes: This metadata was automatically generated from the FGDC Content Standards for Digital Geospatial Metadata standard (version FGDC-STD-001-1998) using the 2015-05-04 version of the FGDC RSE to ISO 19115-2 transform.
- notes: Translated from FGDC 2015-06-11T11:44:56.381-04:00
- organisation Name NOAA Office for Coastal Management
- Contact information
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- Telephone
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- Voice 843-740-1202
- Address
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- 2234 South Hobson Avenue, Charleston, SC, 29405-2413
- electronic Mail Address coastal.info@noaa.gov