2008 Oregon Department of Geology and Mineral Industries (DOGAMI) Lidar: Lake Billy Chinook, Oregon

The Oregon Department of Geology & Mineral Industries (DOGAMI) contracted with Watershed Sciences, Inc. to collect high

resolution topographic LiDAR data for Lake Billy Chinook (from the resevoir edge to the surrounding canyon rim). The

total area of this collection, including a 50 meter project buffer, is approximately 46 square miles (29,228 acres).

This LiDAR data set was collected on August 14th and 15th, 2008 and encompasses a portion of Jefferson County. This data

set consists of bare earth, water and unclassified points. There are approximately 7.8 points per square meter over terrestrial surfaces.

In some areas of heavy vegetation or forest cover, there may be relatively few ground points in the LiDAR data. Elevation values for

open water surfaces are not valid elevation values because few LiDAR points are returned from water surfaces. LiDAR intensity values

were also collected.

Original contact information:

Contact Name: Ian Madin

Contact Org: DOGAMI

Phone: 971-673-1542

Email: ian.madin@dogami.state.or.us

Provide high resolution terrain elevation and land cover elevation data.

10546

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

https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/2543/supplemental/or2008_dogami_lakebillychinook_footprint.KMZ

A project report from the vendor may be viewed at:

https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/2543/supplemental/or2008_dogami_lakebillychinook_projectreport.pdf

LiDAR points in LAS 1.2 format (ASPRS Classes 1,2,9)

none

Any conclusions drawn from the analysis of this information are not the responsibility

of Watershed Sciences Inc, David C. Smith and Associates, PSLC, NOAA, 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=2543

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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.

Horizontal accuracies were not specified in the agreement since true horizontal accuracy is regarded as a product of the LiDAR ground

foot print. For more information about the horizontal accuracy, please refer to the reports for each delivery, listed above in

the Supplemental_Information field of this metadata record.

WSI assesses statistical absolute accuracy via direct comparisons of ground classified points to ground RTK survey data. 773 RTK survey

points were used for this data set. For more information about the vertical accuracies, please refer to the survey reports for each of

these deliveries, listed above in the Supplemental_Information field of this metadata record.

; Quantitative Value: 0.026 meters, Test that produced the value:

RMSEz in meters.

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

Upon receipt from vendor (Watershed Sciences), 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.