Identification_Information: Citation: Citation_Information: Originator: Heather Henkel Publication_Date: 200711 Title: Everglades Depth Estimation Network (EDEN) Water Surfaces Data Geospatial_Data_Presentation_Form: digital files Online_Linkage: http://sofia.usgs.gov/eden/models/watersurfacemod.php Description: Abstract: Spatially continuous interpolation of water surface across the greater Everglades is generated for daily mean values of the water level gages for the EDEN network beginning January 1, 2000. Surfaces are recorded as elevations in centimeters relative to the North American Vertical Datum of 1988 (NAVD 88). These surfaces are served on the web as GIS data layers. Purpose: Spatially explicit hydrologic information can be critical in understanding and predicting changes in biotic communities in wetland ecosystems. Repeated field measurements, the traditional method of collecting water surface information, is labor intensive and doesn't produce spatially continuous data across large areas. For this reason the EDEN project was started to collect data from over 200 real time stage monitoring gages that automatically record and radio-transmit data. The project integrates existing and new telemetered water level gages into a single network. Combined with a high resolution ground elevation model it generates a daily continuous water surface and water depth for the freshwater greater Everglades. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20000101 Ending_Date: 20070930 Currentness_Reference: ground condition Status: Progress: In Work Maintenance_and_Update_Frequency: As needed Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -81.3 East_Bounding_Coordinate: -80.16 North_Bounding_Coordinate: 26.75 South_Bounding_Coordinate: 25 Keywords: Theme: Theme_Keyword_Thesaurus: none Theme_Keyword: water level Theme_Keyword: hydrology Theme_Keyword: gages Theme_Keyword: water surface Theme_Keyword: stage Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: environment Theme_Keyword: inlandWaters Theme_Keyword: elevation Theme_Keyword: 006 Theme_Keyword: 007 Theme_Keyword: 012 Place: Place_Keyword_Thesaurus: 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 Place_Keyword: United States Place_Keyword: US Place: Place_Keyword_Thesaurus: 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 Place_Keyword: Florida Place_Keyword: FL Place: Place_Keyword_Thesaurus: 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 Place_Keyword: Broward County Place_Keyword: Collier County Place_Keyword: Miami-Dade County Place_Keyword: Monroe County Place_Keyword: Palm Beach County Place: Place_Keyword_Thesaurus: USGS Geographic Names Information System Place_Keyword: Everglades National Park Place_Keyword: Big Cypress National Preserve Place_Keyword: Florida Bay Place_Keyword: Gulf of Mexico Place: Place_Keyword_Thesaurus: none Place_Keyword: Greater Lake Okeechobee Place_Keyword: Central Everglades Place_Keyword: SW Big Cypress Place_Keyword: Water Conservation Area 1 Place_Keyword: Water Conservation Area 2 Place_Keyword: Water Conservation Area 3 Place_Keyword: WCA1 Place_Keyword: WCA2 Place_Keyword: WCA3 Access_Constraints: none Use_Constraints: none. The data from 10/1/2005 to 9/30/2007 are provisional. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Heather Henkel Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing and physical address Address: 600 Fourth Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: 727 803-8747 ext 3028 Contact_Facsimile_Telephone: 727 803-2030 Contact_Electronic_Mail_Address: sofia-metadata@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: http://sofia.usgs.gov/eden/models/watersurfacemod.php Browse_Graphic_File_Description: The graphic shows the area covered by the water surface data and the colors represent the differences in water surface elevation meters, The graphic is only representative of a single day, other maps will display differently. Browse_Graphic_File_Type: JPEG Data_Set_Credit: The Water Stage surfacing team includes Monica Palaseanu, Leonard Pearlstine, and Ikuko Fujisaki at the University of Florida, Ft Lauderdale Research and Education Center Native_Data_Set_Environment: Data are available as NetCDF files and as GeoTiff files. Daily Median Output Files are available as text files Cross_Reference: Citation_Information: Originator: Pearlstine, Leonard Higer, Aaron; palaseanu, Monica; Fujisaki, Ikuko; Mazzotti, Frank Publication_Date: 2007 Title: Spatially Continuous Interpolation of Water Stage and Water Depths Using the Everglades Depth Estimation Network (EDEN) Geospatial_Data_Presentation_Form: report Series_Information: Series_Name: CIR Issue_Identification: 1521 Publication_Information: Publication_Place: Gainesville, Fl Publisher: Institute of Food and Agricultural Services, University of Florida Other_Citation_Details: Full text of the document is available at: http://edis.ifas.ufl.edu/pdffiles/UW/UW27800.pdf Online_Linkage: http://edis.ifas.ufl.edu/UW278 Data_Quality_Information: Logical_Consistency_Report: The Daily Median Output Files "median" files contain a list of the stations that were used to create water surfaces for that day. The "median_reject" files contain a list of gages that were not used during the creation of that day's water surface. Completeness_Report: Data from all the gages were collected and evaluated for use in calculating the water surface for each day. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: 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). Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: Source data (HAED) collected to better than +/- 15cm. Standard errors of cross-validation for the DEM range from ~7cm to 17cm depending on the EDEN subarea. This version is composed of new models created for WCA3N and the BCNP combined with the mosaic of two versions (i.e., eden_v002a for WCA1 and eden_v002c for all other EDEN subregions) that comprised EDEN_EM_JAN07. The previous mosaic was selected based on analysis of model performance in the water depth estimation process. The WCA1 surface was produced by removing all "upland" AHF points as defined by a reclassification of the Florida GAP process. For WCA1, the krigging model was developed based on statistics from the entire EDEN domain (the process for eden_v002a production). For each other EDEN sub-area (i.e., the other WCAs and the National Park) region specific krigging models were developed and applied. Lineage: Process_Step: Process_Description: The water surface model was created by the following steps: 1. Water-level data for all the EDEN gages are retrieved from an ftp server 2. Water-level data reported in NGVD 29 are converted to NAVD 88 3. Daily median water level is calculated 4. Linear interpolation is used to create boundary conditions along canals and levees 5. Radial Bias Function multiquadric interpolation of extended data (median water level from gages in marsh and interpolated values along canals) is used to generate continuous water level surfaces daily 6. The continuous water surface is predicted on the EDEN grid (400m x 400m) 7. Water depth is estimated by subtracting the EDEN ground digital elevation model (DEM) from the predicted water surface The USGS retrieves water level data daily from 253 gaging stations including 225 telemetry-enhanced gages that record and transmit several water level values throughout the day, most hourly from recorders ranging from approximately 81 deg, 07 min 19 sec to 80 deg 13 min 05 sec West and from 25 deg 13 min 27 sec to 26 deg 40 min 47 sec North. An additional 28 gages do not have telemetry and are manually read and added to the network. All transmitted data are entered and stored in the National Water Information System (NWIS), a database operated by the USGS. There are a total of 240 gages used for water surface interpolation of the freshwater Everglades. All gages in the EDEN network are operated and maintained by four separate agencies including Everglades National Park, South Florida Water Management District, Big Cypress National Preserve, and the USGS. Process_Date: 2007 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Heather Henkel Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing and physical address Address: 600 Fourth Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: 727 803-8747 ext 3028 Contact_Facsimile_Telephone: 727 803-2030 Contact_Electronic_Mail_Address: sofia-metadata@usgs.gov Process_Step: Process_Description: Surfacing Process: The steps in preparing a daily surface from Everglades stage gaging stations are to collect the gaging station values as daily medians, create boundary conditions along canals/levees, generate the continuous surface using multiquadric radial basis function, and save the output into 400 meter output grids in netCDF and geoTIFF formats. For each day that the surface is run, values for water stage are obtained from the USGS NWIS server for each gage listed in the EDEN master station list maintained by USGS, St Petersburg, Florida. Median daily values are calculated at each gage and stored in UTM, zone 17, NAD 1983 projection and datum, meter horizontal units. Vertical units are centimeters, NAVD 88. Where gage data is obtained in NGVD 29, it is converted to NAVD 88 using difference values for each gage. The difference values are provided in the EDEN master list. Median stage values along specific canals are linearly interpolated every 200m between gages and extrapolated up to 3 kilometers beyond a gage when canals extend beyond the last gage. This interpolation/extrapolation will be used in the surfacing process to enforce boundaries at the canals between Everglades water conservation areas. The specific canals and the point locations interpolated/extrapolated in the canals are read from files maintained by USGS, St Petersburg, Florida. Median stage for the day at each gage and each interpolated/extrapolated canal point location are combined as input for surface interpolation using the radial basis function routine in ArcGIS geostatistical analyst. The parameters are: Kernel Functions: Multiquadric; Parameter = 16.77 Neighbors to Include = 1 Include at least = 1 shape type = 8 sectors angle = 350 major semiaxis = 31000 minor semiaxis = 30000 A boundary data layer is used to clip the surface interpolation to the EDEN area. The surface interpolation is saved to an ESRI GRID with 400m cell resolution aligned to the EDEN grid data layer. The prediction grid value at each cell is obtained from the interpolation surface by assigning to the grid cell the prediction value that corresponds to the center position of the grid cell. Both the boundary data layer and the EDEN GRID are maintained by USGS, St Petersburg, Florida. Interpolation surface GRID files for each day are converted to geoTIFF and CF compliant netCDF files for achieving. The netCDF files collect 3 months of daily surfaces together in each file. Process_Date: 2007 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Leonard Pearlstine Contact_Organization: Everglades and Dry Tortugas Parks Contact_Address: Address_Type: mailing and physical address Address: South Florida Natural Resources Center 950 Krome Avenue City: Homestead State_or_Province: FL Postal_Code: 33030 Country: USA Contact_Voice_Telephone: 305 224-4228 Contact_Facsimile_Telephone: 305 224-4147 Contact_Electronic_Mail_Address: Leonard_Pearlstine@nps.gov Spatial_Data_Organization_Information: Indirect_Spatial_Reference: greater Everglades Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 17 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.9996 Longitude_of_Central_Meridian: -81 Latitude_of_Projection_Origin: 0 False_Easting: 500000 False_Northing: 0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: Coordinate Pair Coordinate_Representation: Abscissa_Resolution: 400 Ordinate_Resolution: 400 Planar_Distance_Units: meters Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 Ellipsoid_Name: Geodetic Reference System 80 Semi-major_Axis: 6378137 Denominator_of_Flattening_Ratio: 298.257 Vertical_Coordinate_System_Definition: Altitude_System_Definition: Altitude_Datum_Name: North American Vertical Datum of 1988 Altitude_Resolution: 0.0001 Altitude_Distance_Units: centimeters Altitude_Encoding_Method: Explicit elevation coordinate included with horizontal coordinates Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: The CF-compliant metadata in the header of the NetCDF file provides spatial information for projecting the data into a GIS as well as the start date and time step for the time-series of data in the file. It also provides information about the conventions used for attributes in the dataset and the source software used to create the dataset. The Daily Median Output text files provide the following information: the agency responsible for the data, the station id, X and Y location in UTM coordinates, median water values in cm, the year, month, and day of collection, Head or Tail gage, and area of data collection Entity_and_Attribute_Detail_Citation: NetCDF Climate and Forecast (CF) Metadata Conventions, Version 1.0, 28 October, 2003 at http://cf-pcmdi.llnl.gov/documents/cf-conventions/1.0/ Distribution_Information: Distributor: Contact_Information: Contact_Person_Primary: Contact_Person: Heather S.Henkel Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing address Address: 600 Fourth St. South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: 727 803-8747 ext 3028 Contact_Facsimile_Telephone: 727 803-2030 Contact_Electronic_Mail_Address: hhenkel@usgs.gov Resource_Description: Water Surfaces Distribution_Liability: No warrantees are implied or explicit for the data Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: netCDF Format_Version_Number: CF-1.0 Format_Specification: .zip Format_Information_Content: Each file contains the daily data for 3 months File_Decompression_Technique: The files must be unzipped before use Transfer_Size: 16 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://sofia.usgs.gov/eden/models/watersurfacemod.php Access_Instructions: The data may be downloaded from the SOFIA website Digital_Form: Digital_Transfer_Information: Format_Name: GeoTiff Format_Version_Number: unknown Format_Specification: .zip Format_Information_Content: Each file contains the daily data for 3 months File_Decompression_Technique: The files must be unzipped before use Transfer_Size: 55 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://sofia.usgs.gov/eden/models/watersurfacemod.php Access_Instructions: The data may be downloaded from the SOFIA website Fees: none Distribution_Information: Distributor: Contact_Information: Contact_Person_Primary: Contact_Person: Heather S.Henkel Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing address Address: 600 Fourth St. South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: 727 803-8747 ext 3028 Contact_Facsimile_Telephone: 727 803-2030 Contact_Electronic_Mail_Address: hhenkel@usgs.gov Resource_Description: Water Surfaces Daily Median Output Files Distribution_Liability: No warrantees are implied or explicit for the data Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ASCII Format_Version_Number: unknown Format_Specification: .zip Format_Information_Content: Each file contains 3 months (one-quarter year) of daily datasets File_Decompression_Technique: The files must be unzipped before use Transfer_Size: 0.5 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://sofia.usgs.gov/eden/models/watersurfacemod.php Access_Instructions: The data may be downloaded from the SOFIA website Fees: none Metadata_Reference_Information: Metadata_Date: 20080201 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Heather Henkel Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing and physical address Address: 600 Fourth Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: 727 803-8747 ext 3028 Contact_Facsimile_Telephone: 727 803-2030 Contact_Electronic_Mail_Address: sofia-metadata@usgs.gov Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998