2012 NOAA Fisheries Topographic Lidar: Bridge Creek, Oregon

This data set is an LAZ (compressed LAS) format file containing LIDAR point cloud data. This data set is an LAZ (compressed LAS) format file containing LIDAR point cloud data. In March 2012, WSI (Watershed Sciences, Inc.) was contracted by Woolpert, Inc. (Woolpert) to collect Light Detection and Ranging (LiDAR) data and digital imagery in the fall of 2012 for the Bridge Creek LiDAR site in Oregon. The LiDAR survey used a Leica ALS60 laser system, classified to ground and non-ground points, stored in LAS 1.2 format. WSI (Watershed Sciences, Inc.) was contracted by Woolpert, Inc. (Woolpert) to collect Light Detection and Ranging (LiDAR) data for the Bridge Creek LiDAR site in Oregon. The project area delivered is 9163 square acres. These files contain classified topographic lidar data as unclassified valid topographic data (1), and valid topographic data classified as ground (2). Classes 1 and 2 are defined in accordance with the American Society for Photogrammetry and Remote Sensing (ASPRS) classification standards.

This task consists of the collection of LiDAR, and half meter color digital aerial imagery for the Bridge Creek area. Data were collected to aid Woolpert and NOAA Fisheries in assessing channel restoration along Bridge Creek.

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A footprint of this data set may be viewed in Google Earth at:

https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/3676/supplemental/or2012_noaa_bridgecreek_m3676.kmz

The Bridge Creek, OR Lidar Technical Data Report is available at: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/3676/supplemental/or2012_noaa_bridgecreek_projectreport_m3676.pdf

LiDAR points in LAZ format (Classes 1,2)

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Any conclusions drawn from the analysis of this information are not the responsibility of Watershed Sciences, NOAA, NOAA Fisheries, the Office for Coastal Management or its partners.

This data can be obtained on-line at the following URL:

https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=3676;

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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be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual surface conditions.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.

The LiDAR was collected and processed to support a 95% confidence level | Quantitative Value: RMSE less than or equal to 15cm | Quantitative Test Explanation: These data are not attributed

Relative errors for the position must be less than 1.5 cm horizontal and 2.0 cm vertical in order to be accepted.; Quantitative Value: 1.0 meters, Test that produced the value: 100 cm, not tested

Absolute accuracy is described as the mean and standard deviation sigma of divergence of the ground surface model from ground survey point coordinates.; Quantitative Value: 0.019 meters, Test that produced the value: +/- 1.9 cm, RMSE

Topological and attribute accuracy was verified by visually examining the data in its final format

Topologically clean