2007 Bureau of Land Management (BLM) Lidar: Panther Creek Watershed, Yamhill County

The dataset represents LiDAR elevations acquired during a leaf-off and a leaf-on vegetative condition for the Upper Panther

Creek Watershed in the Yamhill County study area in Oregon. The date of collection for the leaf off data is 20071208.

The date of collection for the leaf on data is 20070903. The area of interest covers ~5577 acres (~8.71 sq miles).

The LiDAR survey utilized a Leica ALS50 Phase II laser mounted in a Cessna Caravan 208B set to acquire greater than or

equal to 105,000 pulses per second (i.e. 105 kHz pulse rate). The scan angle was plus or minus 14 degrees from nadir.

These settings are designed to yield an average native density (number of pulses emitted by the laser system) of greater

than or equal to 8 points per square meter over terrestrial surfaces. LiDAR intensity values were also collected. 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.

Watershed Sciences, Inc. collected the LiDAR and created this data set for the Bureau of Land Management.

Original contact information:

Contact Name: Ian Madin

Contact Org: Oregon Department of Geology and Mineral Industries (DOGAMI)

Phone: 971-673-1542

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

Provide high resolution terrain elevation and land cover elevation data.

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The report for The LiDAR Remote Sensing Data Collection: Yamhill County, Oregon may be viewed at:

https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/81/supplemental/Yamhill_BLM_LiDAR_Report.pdf

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

of Land Management, the Office for Coastal Management, or its partners.

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

The data set is dynamically generated based on user-specified parameters.

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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this data may no longer represent actual surface conditions.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.

Microsoft Windows 2000 Version 5.2 (Build 3790) Service Pack 2; ESRI ArcCatalog 9.2.0.1324

1/4500th Above Ground Level (AGL).

For more information, please refer to the report for The LiDAR Remote Sensing Data Collection: Yamhill County, Oregon at:

https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/81/supplemental/Yamhill_BLM_LiDAR_Report.pdf

The Root Mean Square Error (RMSE) of the data set is 0.02 meters. Accuracy was

assessed using 524 ground survey (real time kinematic) points.

For more information, please refer to the report for The LiDAR Remote Sensing Data Collection: Yamhill County, Oregon at:

https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/81/supplemental/Yamhill_BLM_LiDAR_Report.pdf

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

LiDAR flight lines have been examined to ensure that there was at least 75% sidelap, there are no 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 1:3500 scale.