2006 IndianaMap Reflight Elevation and Surface Models
Due to an early spring, the 2005 IndianaMap Orthophotography Project contains images with leaf-on conditions. The State of Indiana's vendor, Earth Data, created new 2006 elevation and surface models based on the 2006 Reflight Orthophotography dataset collected during February and March leaf-off conditions. The following counties have select areas involved in reflights. The involved counties are Adams, Brown, Clark, Crawford, Daviess, Greene, Harrison, Hendricks, Huntington, Jackson, Jasper, Lawrence, Morgan, Newton, Noble, Orange, Owen, Pike, Porter, Posey, Spencer, St. Joseph, Wabash, Warrick, Wells, White, Dubois, Elkhart, Floyd, Kosciusko, Lake, Marion, Monroe, Perry, Steuben, Tippecanoe, and Vanderburgh. EarthData reflew Dubois and Perry Counties in their entirety.
For the DEM, the files are named as xxxxyyyy_DEM_SPW, where xxxx and yyyy represent the easting and northing coordinates (respectively) in state plane feet, divided by 1000, of the tile origin (the top-left pixel) and SPW designates State Plane West Zone. For the DSM, the files are names as xxxxyyyy_DSM_SPW, where xxxx and yyyy represent the easting and northing coordinates (respectively) in state plane feet, divided by 1000, of the tile origin (the top-left pixel) and SPW designates State Plane West Zone.
These files can be used with GIS software to view the tiling system for the high-resolution 2005/2006 ortho tiles.
Download Index Shapefile -State Plane East (722KB ZIP)
Download Index Shapefile -State Plane West (697KB ZIP)
Coordinate System: Indiana State Plane Coordinate System 1983
Horizontal Datum: NAD83
Vertical spheroid name: WGS84
Vertical datum name: NAVD, 88 CONTUS, GEOID99
Vertical elevation unit: feet
Vertical elevation type: height
Pixel Resolution: 5 foot
File Format: ERDAS IMAGINE and geotiff
Individual File Size: 1-3 MB
GeoTIFF images in Indiana state plane map projections may not display correctly in some applications due to differences in linear units specified in EPSG codes. For more information, please see Why do GeoTiff images display incorrectly in some GIS applications?
When working with .tif DEM files in ArcGIS, the raster may be displayed with all black space. This can be corrected by calculating statistics for the .tif file. This process will create an .aux file where auxiliary information about the raster, such as statistics, will be stored.