Ground Elevation Model
Ground elevation data for the greater Everglades and the digital ground elevation models (DEM) derived from them form the foundation for all EDEN water depth and associated ecological/hydrologic modeling.
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| Download EDEN_EM_OCT07 Files:
NOTE: THIS DEM FILE REPLACES EDEN_EM_JAN07
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This DEM was produced using the version HAED_v01 of the HAED, all available aerial height finder (AHF) data points posted to the SOFIA website as of October 2007. To create a realistic region-wide elevation model for EDEN purposes, the elevation data were segregated by Water Conservation Areas and National Park boundaries so that local trends could be isolated, sub-region specific interpolation models could be developed, and realistic breaks in elevation along sub-region boundaries could be imbedded in a final, region-wide DEM. To-date, the best performing DEMs for all subareas have been produced using the geostatistical approach called "anisotropic ordinary kriging".
Please note: The grid used to break up the EDEN area into equal-sized rectangles ("cells") is at a 400m by 400m resolution. While previous releases of the EDEN DEM were produced at a resolution of 60m by 60m to facilitate satellite-based research, this DEM was produced at 400m by 400m resolution and positioned to match the spatial referencing of the EDEN grid. Also note that the EDEN_EM_OCT07 file is at meter resolution, while EDENapps tools are at centimeter resolution and require a different version of the DEM. See any of the EDENapps pages to download the EDENapps version of this file.
For more information, see "Initial Everglades Depth Estimation Network (EDEN) Digital Elevation Model Research and Development" (USGS Open File Report 2007-1034) and the ground elevation model release log, or contact John Jones.
