Ground Elevation Model – Archive

Please note: a newer version of this file is available

EDEN DEM | EDENapps DEM

EDEN DEM

2010 (January) Version:

January 2010 EDEN Digital Elevation Model (DEM)
Map highlighting areas with new digital elevation models [larger version]	WCA1: Map showing location of four new models [larger version]
What has changed? The shaded polygons in the maps above represent the areas of the EDEN study area for which new digital elevation models have been created: Water Conservation Area 1: 4 subzone models created; least confidence should be placed on the southern zones Northwest corner of Everglades National Park and a significant portion of Big Cypress National Preserve
	Download EDEN_EM_JA10 Files: PDF: 473 KB (quick view) 861 KB (print-quality) Arc .e00: zipped, with metadata files, 243 KB EDEN DEM Metadata file NOTE: THIS DEM FILE REPLACES EDEN_EM_OCT07

2007 (October) Version:

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".

The ground elevation, and therefore water depth, in the Everglades can vary by centimeters or tens of centimeters within a few meters of a given location as a result of microtopographic features. In addition, ground surface elevations in the peat soils of the Everglades can drop during droughts due to compaction as the peat dries and can rise again in the wet season with re-hydration. The elevation value for each EDEN 400m by 400m grid cell is a modelled value influenced by variation in the AHF data surrounding the grid cell. Users are cautioned to use the EDEN data appropriately for site-specific assessments.

Archived File: EDEN_EM_OCT07
	Download EDEN_EM_OCT07 Files: PDF (502 KB) Arc .e00 (zipped, with metadata file, 212 KB) EDEN DEM Metadata file NOTE: THIS DEM FILE REPLACES EDEN_EM_JAN07 and has been replaced by EDEN_EM_JA10

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. Download the EDENapps DEM directly or visit any of the EDENapps pages to download this file.

EDENapps DEM Archived Files

2010 (January) Version:

The released January 2010 data was modified in two ways.

• First, elevation values have been converted from meters (m) to centimeters (cm)
• Second, data has been removed from the southern Big Cypress National Preserve and northwestern Everglades National Park area so that this DEM boundary matches the boundary or domain of the EDEN surface-water model still in use in EDEN applications software. This is the area noted in yellow in the right-hand map below.

EDENapps January 2010 Digital Elevation Model (DEM)
January 2010 EDENapps DEM (cm)	January 2010 EDEN DEM (m)	Map Showing Coverage of January 2010 EDEN DEMs and EDEN Surface Water Boundary
EDENapps DEM coverage (pink area is the current EDEN surface water domain with no DEM) [larger version]	EDEN DEM coverage (pink area is the current EDEN surface water domain with no DEM) [larger version]	Both DEMs with current EDEN surface water boundary [larger version]
Download: EDENapps January 2010 DEM (for use with EDENapps Tools only) (.zip, 168 KB) Metadata for January 2010 DEM

2007 (October) Version:

EDENapps DEM file for ground elevation (.zip, 170 KB)

• Please note: This file is a modification of the EDEN DEM released in October of 2007 (i.e., eden_em_oct07) in which the elevation values have been converted from meters (m) to centimeters (cm) for use by EDEN applications software. This file is intended specifically for use in the EDEN applications software.
• Metadata is also available for this DEM and has been included in the EDEN DEM zip 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.