Quantum Spatial, Inc. 20181011 Raster Product: WA 3 County LiDAR 2017 lidar Intensity Imagery. Geographic Extent: This dataset and derived products encompass an area covering approximately 2,917 square miles of south eastern Washington. The full area is a mix of QL1 and QL2 lidar. Dataset Description: RAW flight line swaths were processed to create 9,312 classified LAS 1.4 files delineated in 3000 ft x 3000 ft tiles. (Please note that 5 tiles contain no data due to their size and location over water and therefore do not exist. These tiles include WA3_07786, WA3_08558, WA3_08745, WA3_08821, and WA3_08825.) Each LAS file contains LiDAR point information, which has been calibrated, controlled, and classified. Additional derived products include hydroflattened bare earth DEM, highest hit surface models, and 3D breaklines of rivers and lakes within the study area. Ground Control Points were acquired and calibrated by Quantum Spatial, Inc. Data acquisition was coordinated by Quantum Spatial and all lidar data calibration, and follow-on processing were completed by Quantum Spatial Ground Conditions: Acquisition below aircraft free of smoke, fog and cloud cover. A small area with remaining snow on the ground was noticed in the data. The difference was only noticed due to the area being acquired at two different times. The high snow level was classified to class 21 and the overlapping mission acquired without snow on the ground was used for ground model creation. A shape of this area has been provided. The purpose of the lidar data was to produce a high accuracy 3D dataset that meets all necessary standards laid out by the 3DEP initiative. The raw lidar point cloud data were used to create classified lidar LAS files, intensity images, hydro-flattened DEMs, highest hit surface models, and 3D breaklines of rivers and lakes within the study area. Raster File Type = TIFF Bit Depth/Pixel Type = 8 bit Raster Cell Size = 3 feet Intensity Values Normalized To = 16 bit 20171003 20180704 ground condition Complete None Planned -119.048030 -117.183731 46.732836 45.961812 2009394.211531 2472308.459371 513792.507063 246441.682612 none LAS Point Cloud remote sensing Intensity Image lidar none Washington No restrictions apply to these data. None. However, users should be aware that temporal changes may have occurred since this dataset was collected and that some parts of these data may no longer represent actual surface conditions. Users should not use these data for critical applications without a full awareness of its limitations. Acknowledgement of the U.S. Geological Survey would be appreciated for products derived from these data. Data covers the entire area specified for this project. These LAS data files include all data points collected. No points have been removed or excluded. A visual qualitative assessment was performed to ensure data completeness. No void areas or missing data exist. The raw point cloud is of good quality and data passes Non-Vegetated Vertical Accuracy specifications. Intensity Image creation: Intensity images were created for each tile from all valid first returns as 8 bit TIFFs using Quantum Spatial and ArcGIS software. Classified_LiDAR 20181011 Intensity Images Raster Pixel 3000 3000 State Plane Coordinate System 1983 4602 45.83333333333334 -120.5 45.33333333333334 1640416.666666667 0.0 coordinate pair 3 3 US survey feet North American Datum of 1983 2011 Geodetic Reference System 80 6378137.0 298.257222101 20181011 Quantum Spatial, Inc. mailing and physical

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