Price, Susan D. , 2011, EDEN Grid Shapefile.Online Links:
Planar coordinates are encoded using Coordinate Pair
Abscissae (x-coordinates) are specified to the nearest 0.000512
Ordinates (y-coordinates) are specified to the nearest 0.000512
Planar coordinates are specified in meters
The horizontal datum used is North American Datum of 1983.
The ellipsoid used is Geodetic Reference System 80.
The semi-major axis of the ellipsoid used is 6378137.
The flattening of the ellipsoid used is 1/298.257.
unique cell identifier
subset identifier
UTM easting of the cell
UTM northing
703 648 6692 (voice)
sprice@usgs.gov
The Everglades Depth Estimation Network (EDEN) offers a consistent and documented dataset that can be used to guide large-scale field operations, to integrate hydrologic and ecological responses, and to support biological and ecological assessments that measure ecosystem responses to the Comprehensive Everglades Restoration Plan (Telis, 2006). Ground elevation data for the greater Everglades and the digital ground elevation models derived from them form the foundation for all EDEN water depth and associated ecologic/hydrologic modeling (Jones, 2004, Jones and Price, 2007). To use EDEN water depth and duration information most effectively, it is important to be able to view and manipulate information on elevation data quality and other land cover and habitat characteristics across the Everglades region. These requirements led to the development of the EDEN grid.
To allow for simplicity of design and use, the EDEN area was broken into a large number of equal-sized rectangles ("cells") that in total are referred to here as the "grid". Some characteristics of this grid, such as the size of its cells, its origin, the area of Florida it is designed to represent, and individual grid cell identifiers, could not be changed once the grid database was developed. The field, MasterID, will remain consistent as subsets of this shapefile are created.
Person who carried out this activity:
703 648 6692 (voice)
sprice@usgs.gov
Desmond, G. B., 2003, Measuring and mapping the topography of the Florida Everglades for Ecosystem Restoration: USGS Fact Sheet 021-03, U.S. Geological Survey, Reston, VA.Online Links:
Jones, John W. Price, Susan D., 2007, Initial Everglades Depth Estimation Network (EDEN) digital elevation model reseach and development: USGS Open-File Report 2007-1034, U.S. Geological Survey, Reston, VA.Online Links:
Jones, John W. Price, Susan D., 2007, Conceptual design of the Everglades Depth Estimation Network (EDEN) grid: USGS Open-File Report 2007-1200, U.S. Geological Survey, Reston, VA.Online Links:
Pearlstine, Leonard Higer, Aaron; Palaseanu, Monica; Fujisaki, Ikuko; Mazzotti, Frank, 2007, Spatially Continuous Interpolation of Water Stage and Water Depths Using the Everglades Depth Estimation Network (EDEN): CIR 1521, Institute of Food and Agricultural Services, University of Florida, Gainesville, Fl.Online Links:
Conrads, Paul A. Roehl, Edwin A., Jr., 2007, Hydrologic Record Extension of Water-Level Data in the Everglades Depth Estimation Network (EDEN) Using Artificial Neural Network Models 2000-2006: USGS Open-File Report 2007-1350, U.S. Geological Survey, Reston, VA.Online Links:
Horizontal positions are established by GPS observations and are referenced to the North American Datum of 1983 (NAD83). The desired horizontal accuracy is +/- 15 centimeters. This level of accuracy is consistent with GPS differential techniques which use two stations - a high-quality dual-frequency GPS receiver base station and a roving GPS station. The density and accuracy of a given GPS data observation varies from a few meters to a few centimeters according to the Position Dilution of Precision (PDOP) in the study area. Generally if the PDOP is observed to be excessive, data collection is discontinued or the data are discarded. The PDOP is an indicator of the positional accuracy of the GPS that be can derived from the current GPS satellite geometry, which varies continuously. Generally the smaller the PDOP number, the higher the data quality. The PDOP is a permanent part of the recorded data and is also included in the post processing procedures during reduction of the GPS observations to NAD 83. Where possible, the GPS base station has an ellipsoid height to an accuracy of two centimeters relative to the Continuously Operating Reference Stations (CORS) or the High Accuracy Reference Network (HARN), both operated by the National Geodetic Survey (NGS).
The origin and extent of the EDEN grid were selected to cover not only existing AHF data and current regions of interest for Everglades restoration, but to cover a rectangular area that includes all landscape units (USACE, 2004) and conservation areas in place at the time of its development.
To match the Airborne Height Finder (AHF) system sample spacing, the spatial resolution or the dimension (in ground distance) of each grid cell is 400m on each side.
Are there legal restrictions on access or use of the data?
- Access_Constraints: none
- Use_Constraints: none
727 803-8747 ext 3028 (voice)
727 803-2030 (FAX)
sofia-metadata@usgs.gov
EDEN grid poly shapefile
No warrantees are implied or explicit for the data
| Data format: | ArcGIS shapefile (version 9) Size: 32.8 |
|---|---|
| Network links: |
<http://sofia.usgs.gov/eden/data/gis/EDEN_grid_poly.zip> |
727 803-8747 ext 3028 (voice)
727 803-2030 (FAX)
sofia-metadata@usgs.gov
U.S. Department of the Interior, U.S. Geological Survey
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