This BoiseRiverFinalLiDAR directory has two directories containing raster files, one directory containing metadata and two geodatabases containing point clouds.There is also one shapefile defining the area of LiDAR acquisition. The shapefile named StudyAreaBoundary shows that area where the data were actually collected including the flight lines where the aircraft made turns. Directory:2KGrids The 2KGrids directory contains ERDAS Imagine files of first surface (vegetation on) (fs) and bareearth/bathymetry (bebath) grids at a 2m by 2m cell size tiled by a 2km by 2km mesh. These rasters were created from the Final_Points dataset. It also contains a geodatabase called Lidar2KGridIndex.gdb. The feature class lidar2KGridInex in the geodatabase contains an attribute called namexx. This attribute, based on the UTM 11 northing and easting of the lower left hand corner of the tile, corresponds to the names of the rasters. Additional metadata is contained in the feature class. Directory:Metadata The metadata directory contains a general metadata record for the entire BoiseRiverLidar project. Directory:Rasters_full The Rasters_full directory contains vegetation on or first surface (fs_2m) raster file for the entire study area at a 2m by 2m cell size created from the Final LiDAR point data set. This directory also contains a bare earth/bathymetry (bebath_2m) raster file for the entire study area at a 2m by 2m cell size created from the Final LiDAR point data set. Geodatabase:Final_Points This geodatabase contains three feature data sets called bareearth, bathymetry and firstsurface. bareearth contains feature classes showing the x,y,z point locations generated by ALPS then manually edited to reduce errors in the water/land interface area but additional editing may be required for some applications. These returns also show returns from bridges and buildings. The water areas (Boise River and large waterbodies) were erased from the bare earth data. bathymetry contains feature classes showing the x,y,z point locations generated by ALPS, then manually edited to delete erroneous returns from overhanging vegetation. The bathymetric data were clipped to show just the main river channel and other large bodies of water. firstsurface contains feature classes showing the x,y,z point locations generated by ALPS. Each featureclass contains the following attributes: utm_x UTM Zone 11 NAD 83 easting utm_y UTM Zone 11 NAD 83 northing z_meters NAVD88 elevation value in meters intensity_ Intensity Value return - unitless, it is a backscatter count which ranges from 0 to 255 raster_pul which is a combination of the raster number and pulse number soe seconds of the epoch - the number of seconds elapsed since midnight UTC of Jan 1, 1970 The feature class called FinalPointIndex shows the 2Km wide tile structure of the data. There is an attribute in the table called Number which corresponds to the name of the raster that covers that area. Geodatabase:Preliminary_Points This geodatabase contains two feature data sets named bareearth and bathymetry. Bareearth contains feature classes showing the x,y,z point locations generated by ALPS with no further editing. AS THESE DATA HAVE NOT BEEN MANUALLY CLEANED, BARE EARTH RETURNS MAY SHOW ERRORS IN AREAS WHERE WATER IS PRESENT AND BARE EARTH RETURNS WILL ALSO SHOW RETURNS FROM BUILDINGS. These data are provided for researchers that may want to manually process and refine their own datasets. Most researchers will probably prefer to use the Final_Points.gdb data. Bathymetry contains feature classes showing the x,y,z point locations generated by ALPS with no further editing. BATHYMETRIC RETURNS WILL SHOW ERRORS IN AREAS WHERE WATER IS NOT PRESENT AND WILL GIVE MIXED RETURNS WHERE VEGETATION AND WATER ARE MIXED. These data are provided for researchers that may want to manually process and refine their own datasets. Most researchers will probably prefer to use the Final_Points.gdb data. Each featureclass contains the following attributes: utm_x UTM Zone 11 NAD 83 easting utm_y UTM Zone 11 NAD 83 northing z_meters NAVD88 elevation value in meters intensity_ Intensity Value return - unitless, it is a backscatter count which ranges from 0 to 255 raster_pul which is a combination of the raster number and pulse number soe seconds of the epoch - the number of seconds elapsed since midnight UTC of Jan 1, 1970 The shapefile named StudyAreaBoundary shows that area where the data were actually collected including the flight lines where the aircraft made turns. The feature class called PreliminaryPointIndex shows the 2Km wide tile structure of the data. There is an attribute in the table called Number which corresponds to the name of the raster that covers that area.