2004 Klamath Basin Rangeland Trust Lidar : Wood River, OR

The Klamath Basin Rangeland Trust contracted with a vendor, Watershed Sciences, Inc (WSI) to collect high resolution topographic data for a portion of the Klamath watershed. The 2004 Wood River project area was collected on September 26th & 27th, 2004. The survey area encompassed the Wood River floodplain from Agency Lake at the southern edge to Annie Creek in the north. The data were collected using an Optech ALTM 3100 LiDAR system set to acquire points at average spacing of 8 points per square meter for parallel overlapping areas. The total area of delivered data equals 62,195 acres.

NOAA OCM received the data from Oregon Department of Geology & Mineral Industries (DOGAMI) / The Oregon Lidar Consortium (OLC).

In addition to the processed lidar point data, a bare-earth digital elevation model (DEM) was also received by NOAA's OCM and is available through the Related Items section, below.

This dataset provides high resolution terrain elevation and land cover elevation data in the Wood River Study Area.

xyz location information for objects in the area

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

Data is available online for custom downloads

None

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be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual surface conditions.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

RMSe = 0.07 meters. This is a vendor-reported vertical accuracy calculated with 263 independent ground survey points. See project report for more details.

Data set was found to be complete. See the Acceptance Report for more detailed information.

The study area was buffered by 100 meters to ensure complete coverage. While there may be the appearance of data gaps (outside on the known survey gaps), these are limited to areas under buildings or over very still/calm water surface (ponds, pools, etc.) where the bare ground model required greater than 10 meters to build a triangle. In these cases, the models recorded no data. The GRID data are an average value that fits triangles within a specified area (1 m2). By setting distance limits to triangle length, longer interpolations are avoided for areas with low point density where laser pulses are obstructed or absorbed. It is more typical for commercial LiDAR providers to deliver data sets that allow long triangle lengths to prevent any gaps in the resulting GRID data sets. However, such interpolation of the data may provide a false sense that data are continuous throughout the study area, when in fact, they are not. In the final processing we tend to limit triangle to explicitly demonstrate absence of laser return length and thus allow data gaps where data densities are insufficient to adequately characterize surfaces. This method also effectively displays laser return gaps

Data is backed up to tape and to cloud storage.

Watershed Sciences Inc. has collected Light Detection and Ranging (LIDAR) data in the Wood River Study Area.

NOAA OCM has taken the data and ingested it into the Digital Coast Data Access Viewer for distribution.