2014 Oregon Department of Geology and Mineral Industries (DOGAMI) Oregon Lidar DEM: Crooked Ochoco

WSI, a Quantum Spatial company, has collected lidar data for the Oregon LiDAR Consortium (OLC) Crooked Ochoco study area. This study area is adjacent to the Ochoco study area delivered July 31, 2013. The northwestern section of Crooked Ochoco was acquired before snow fell in the study area at the end of 2013. Acquisition of the remaining areas was completed in summer 2014. The collection of high resolution geographic data is part of an ongoing pursuit to amass a library of information accessible to government agencies as well as the general public.

In September and December 2013, and May and June 2014, WSI employed lidar in order to obtain a total area flown of 159,270 acres. Settings for LiDAR data capture produced an average resolution of at least eight pulses per square meter.

September flights utilized a Leica ALS 50 sensor mounted in a Piper Navajo. December flights utilized a Leica ALS 70 sensor mounted in a Cessna Caravan. May 2014 flights used a Leica ALS 60 sensor mounted in a Cessna Caravan and the June 2014 flights used Leica ALS 70 sensor in a Partenavia P68.

Final products included lidar point cloud data, one-meter digital elevation models of bare earth ground model and highest-hit returns, intensity rasters, study area vector shapes, and corresponding statistical data. Final deliverables were projected in Oregon Statewide Lambert Conformal Conic. This metadata was created for the bare earth digital elevation models.

Original contact information:

Contact Name: Jacob Edwards

Contact Org: DOGAMI

Phone: 971-673-1557

Email: jacob.edwards@oregon.gov

Provide high resolution terrain elevation data.

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A final report for this project may be viewed at:

https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/6357/supplemental/2014_OLC_Crooked_Ochoco.pdf

Any conclusions drawn from the analysis of this information are not the responsibility of the Oregon Department of Geology and Mineral Industries (DOGAMI), the Office for Coastal Management or its partners.

This data can be obtained on-line at the following URL: https://coast.noaa.gov/dataviewer

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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.

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Vertical accuracy statistical analysis uses ground survey points in open areas where the LiDAR system has a "very high probability" that the sensor will measure the ground surface and is evaluated at the 95th percentile. For the OLC Crooked Ochoco study area, a total of 2,413 RTK points were collected. No independent survey data were collected, thus statistics are "Compiled to Meet".

For more information about the vertical accuracy, please refer to the final report, listed above in the Supplemental_Information field

of this metadata record.

; Quantitative Value: 0.03 meters, Test that produced the value: Compiled to meet root mean square error.

Lidar data has been collected and processed for all areas within the project study area.

Upon receipt from vendor (WSI), all LiDAR data was independently reviewed by staff from the Oregon Department of Geology and Mineral Industries (DOGAMI) to ensure project specifications were met. All data were inventoried for completeness and data were checked for quality, which included examining LiDAR data for errors associated with internal data consistency, model quality, and accuracy.