Geographic Extent: OLC Grass Valley FEMA Buffered Project Area, covering approximately 95,543 acres. Dataset Description: The OLC Grass Valley FEMA LiDAR project called for the Planning, Acquisition, processing and derivative products of LIDAR data to be collected at a nominal pulse spacing (NPS) of 0.35 m. Project specifications are based on the U.S. Geological Survey National Geospatial Program LIDAR Base Specification, Version 1.2. The data were developed based on the Universal Transverse Mercator (UTM) 10N projection; horizontal datum of NAD83 (2011), meters; and vertical datum of NAVD88 Geoid 12A, meters. LiDAR data were delivered in RAW flight line swath format, processed to create Classified LAS 1.4 Files formatted to a 750 meter by 750 meter tiling scheme; Hydro-flattened Bare Earth DEMs tiled to the same 750 meter by 750 meter tiling scheme; and Bridge and Hydro-Flattening Breaklines in ESRI File-Geodatabase format. Ground Conditions: LiDAR was collected in 2017, while no snow was on the ground and rivers were at or below normal levels. In order to post process the LiDAR data to meet task order specifications, Quantum Spatial established a total of 295 control points that were used to calibrate the LIDAR to known ground locations established throughout the OLC Grass Valley FEMA project area. In addition to these lidar point data, the bare earth Digital Elevation Models (DEM) created from the lidar point data and the breakline data are also available. These data are available for download at the links provided in the URL section of this metadata record. This data set is an LAZ (compressed LAS) format file containing LIDAR point cloud data.