Susan D. Price 2011 v02 (version 2) vector digital data http://sofia.usgs.gov/eden/models/edengrid.php This shapefile serves as a net (fishnet or grid) to be placed over the South Florida study area to allow for sampling within the 400 meter cells (grid cells or polygons). The origin and extent of the Everglades Depth Estimation Network (EDEN) grid were selected to cover not only existing Airborne Height Finder (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. This will allow for future expansion of analyses throughout the Greater Everglades region should resources allow and scientific or management questions require it. Combined with the chosen extent, the 400m cell resolution produces a grid that is 675 rows and 375 columns.. The shapefile contains the 253125 grid cells described above. 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. These characteristics were selected to design as robust a grid as possible and to ensure the grid’s long-term utility. 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. Each cell, grid-cell or polygon (choose your terminology) may be uniquely identified by 1) MasterID 2) X-Coord and Y-Coord pairs 3) Net_v01-ID provided that this has not been altered by ArcGIS idedit/build commands after subsetting. Therefore, it is safer to use the MasterID 20050509 publication date Complete As needed -81.51 -79.9 27.2 24.7 none sampling framework grid net fishnet geography mapping ISO 19115 Topic Category planningCadastre 015 Department of Commerce, 1995, Countries, Dependencies, Areas of Special Sovereignty, and Their Principal Administrative Divisions, Federal Information Processing Standard (FIPS) 10-4, Washington, DC, National Institute of Standards and Technology United States US U.S. Department of Commerce, 1987, Codes for the identification of the States, the District of Columbia and the outlying areas of the United States, and associated areas (Federal Information Processing Standard 5-2): Washington, DC, NIST Florida FL Department of Commerce, 1990, Counties and Equivalent Entities of the United States, Its Possessions, and Associated Areas, FIPS 6-3, Washington, DC, National Institute of Standards and Technology Broward County Collier County Hendry County Miami-Dade County Monroe County Palm Beach County Martin County Glades County USGS Geographic Names Information System Everglades National Park Big Cypress National Preserve Loxahatchee National Wildlife Refuge none Water Conservation Area 1 Water Conservation Area 2 Water Conservation Area 3 WCA1 WCA2 WCA3 BCNP none none Susan D. Price U.S. Geological Survey mailing address

521 National Center

Reston VA 20192 USA 703 648 6692 sprice@usgs.gov http://sofia.usgs.gov/publications/ofr/2007-1200/spatial.html Overall extent of the EDEN grid GIF Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 1; ESRI ArcInfo Workstation 9.0 Any use of trade, product, or firm name is for descriptive purposes only and does not constitute endorsement by the U.S. Government Desmond, G. B. 2003 fact sheet USGS Fact Sheet 021-03 Reston, VA U.S. Geological Survey http://sofia.usgs.gov/publications/fs/021-03/index.html Jones, John W. Price, Susan D. 2007 report USGS Open-File Report 2007-1034 Reston, VA U.S. Geological Survey http://sofia.usgs.gov/publications/ofr/2007-1034 Jones, John W. Price, Susan D. 2007 report USGS Open-File Report 2007-1200 Reston, VA U.S. Geological Survey http://sofia.usgs.gov/publications/ofr/2007-1200/ Pearlstine, Leonard Higer, Aaron; Palaseanu, Monica; Fujisaki, Ikuko; Mazzotti, Frank 2007 report CIR 1521 Gainesville, Fl Institute of Food and Agricultural Services, University of Florida Full text of the document is available at: http://edis.ifas.ufl.edu/pdffiles/UW/UW27800.pdf http://edis.ifas.ufl.edu/UW278 Conrads, Paul A. Roehl, Edwin A., Jr. 2007 report USGS Open-File Report 2007-1350 Reston, VA U.S. Geological Survey http://pubs.usgs.gov/of/2007/1350 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. 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. 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 nearly 50,000 AHF points constitute the foundation for the EDEN grid and were used to initially assign elevation values to each cell. The polygon coverage was exported to shapefile, feature polygon 20050507 Susan D. Price U.S. Geological Survey mailing address

521 National Center

Reston VA 20192 USA 703 648 6692 sprice@usgs.gov Everglades Depth Estimation Network Vector GT-polygon composed of chains 253125 Universal Transverse Mercator 17 0.9996 -81 0 500000 0 Coordinate Pair 0.000512 0.000512 meters North American Datum of 1983 Geodetic Reference System 80 6378137 298.257 net_v01_poly feature class U.S. Geological Survey Masterid uniques identifier for the cell, grid-cell or polygon which can not be changed by subsetting USGS unique cell identifier Net_v01-ID identifier for a cell, grid-cell or polygon which may be modified by the idedit/build commands after subsetting USGS subset identifier X_coord UTM Easting in meters USGS UTM easting of the cell Y_coord UTM Northing in meters USGS UTM northing Heather Henkel U.S. Geological Survey mailing and physical address

600 Fourth Street South

St. Petersburg FL 33701 USA 727 803-8747 ext 3028 727 803-2030 sofia-metadata@usgs.gov EDEN grid poly shapefile No warrantees are implied or explicit for the data ArcGIS shapefile 9 32.8 http://sofia.usgs.gov/eden/data/gis/EDEN_grid_poly.zip The shapefile may be downloaded from the SOFIA website none 20111027 Heather Henkel U.S. Geological Survey mailing and physical address

600 Fourth Street South

St. Petersburg FL 33701 USA 727 803-8747 ext 3028 727 803-2030 sofia-metadata@usgs.gov Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 none This metadata record may have been copied from the SOFIA website and may not be the most recent version. Please check http://sofia.usgs.gov/metadata to be sure you have the most recent version.