This GIS dataset contains points, polygons, and raster grids depicting lidar-derived elevation data for the Oregon Lidar Consortium (OLC) Santiam 2018 area of interest (AOI). The AOI encompasses 106,585 acres within area of interest (AOI), and 110,378 acres within the buffered area of interest (BAOI). All data are in Polk and Marion Counties, Oregon. The nominal pulse density is eight pulses per square meter. The digital elevation model (DEM) and digital surface model (DSM) raster grid cell size is 3 feet. The intensity raster grid cell size is 1.5 feet. The native projection is Oregon Statewide Lambert, Lambert Conformal Conic, units are in international feet. The native horizontal datum is NAD83(2011) and the native vertical datum is NAVD88 (Geoid 12B). Quantum Spatial Inc. collected the lidar and created this dataset for the Oregon Department of Geology and Mineral Industries (DOGAMI). The NOAA Office for Coastal Management received the point data and processed it to the Data Access Viewer (DAV) and http. The data were converted to geographic coordinates and ellipsoidal heights for DAV, and geographic coordinates and orthometric heights using NAVD88 for http. This data set is an LAZ (compressed LAS) format file containing LIDAR point cloud data.