The 2 meter Raster bare earth DEM files have been created from LiDAR data collection over the County of Tompkins, NY in Spring 2008. The nominal point spacing of the source LIDAR is 1.4 meter (1.4m GSD). The 2 meter DEM was created by NYS ITS GIS Program Office and reprojected to UTM NAD 83 Zone 18 (extended for New York State), meters and vertical datum of NAVD1988 (GEOID09), meters. The Raster DEM was then clipped to 1500m x1500m tiles using Blue Marble Geographics Global Mapper with an ERDAS IMG file format.2 meter raster DEM files contain the elevation at the bare earth surface. This allows users to get elevations, create contours, and perform other tasks that require elevation. Support of FEMA's Floodplain Map Modernization Program. Multiple other uses expected.Noneelevationremote sensingmodelElevationDEMLIDARISO 19115 Topic CategorieselevationNoneNone. However, users should be aware that changes may have occurred since the source data were collected and that some parts of this dataset may no longer represent actual surface conditions. Users should not use this data for critical applications without a full awareness of its limitations.20130617Tompkins 2008 Collection2008In the spring of 2008, Tompkins County tasked Pictometry International Corp. to acquire 513 square miles of terrestrial LiDAR data (1.4m NPS) in Tompkins County, NY. A Optech ALTM Gemini 3100 LiDAR system was used for the collection. The LiDAR data associated with this metadata file is in LAS binary format, version 1.1 (ASPRS specification, see Cross References). The LIDAR Collection metadata can be viewed at http://gis.ny.gov/elevation/metadata/NYTompkins2008LiDARData.xmlFGDC Content Standard for Digital Geospatial MetadataFGDC-STD-001-1998local time2 meter raster DEM files contain the elevation at the bare earth surface. This allows users to get elevations, create contours, and perform other tasks that require elevation. Support of FEMA's Floodplain Map Modernization Program. Multiple other uses expected.<DIV STYLE="text-align:Left;"><DIV><P><SPAN>The 2 meter Raster bare earth DEM files have been created from LiDAR data collection over the County of Tompkins, NY in Spring 2008. The nominal point spacing of the source LIDAR is 1.4 meter (1.4m GSD). The 2 meter DEM was created by NYS ITS GIS Program Office and reprojected to UTM NAD 83 Zone 18 (extended for New York State), meters and vertical datum of NAVD1988 (GEOID09), meters. The Raster DEM was then clipped to 1500m x1500m tiles using Blue Marble Geographics Global Mapper with an ERDAS IMG file format.</SPAN></P></DIV></DIV>County 2 Meter DEMelevationremote sensingmodelElevationDEMLIDARelevation<DIV STYLE="text-align:Left;"><DIV><P><SPAN>None. However, users should be aware that changes may have occurred since the source data were collected and that some parts of this dataset may no longer represent actual surface conditions. Users should not use this data for critical applications without a full awareness of its limitations.</SPAN></P></DIV></DIV>20140423135241001500000005000FGDC