|2007 Oregon Department of Forestry (ODF) Northwest Oregon Lidar
|This lidar dataset encompasses two areas in northwest Oregon. The northern area is
located in Clatsop County, encompassing Clatsop State Forest ownership; the southern
area is located in Tillamook, Washington and Yamhill Counties, encompassing areas
of the Tillamook State Forest. The LiDAR data was collected April 25-28, May 1 and
May 3-9, 2007. The lidar data are multiple return and bare earth classified. The survey
used a Leica ALS50 Pase II laser system mounted in a Cessna Caravan 208. LiDAR flight
lines have been examined to ensure that there was at least 50% sidelap, there are
no gaps between flightlines, and overlapping flightlines have consistent elevation
values. Near nadir scan angles were used to increase penetration of vegetation to
ground surfaces. Ground level GPS and aircraft IMU were collected during the flight.
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 Oregon Department of Forestry and the
Puget Sound LiDAR Consortium.