FLORIDA GEOGRAPHIC DATA LIBRARY DOCUMENTATION
VERSION 2005
TITLE: SALINITY ZONES
Geodataset Name: SALZON Geodataset Type: SHAPE Geodataset Feature: POLYGON
GENERAL DESCRIPTION:
This data set contains 3-Zone Average Annual Salinity Digital Geography. These salinity geographies represent the average annual salinity found in certain estuaries along the coast of Florida.
DATA SOURCE(S): NOAA National Ocean Services Special Projects Office SCALE OF ORIGINAL SOURCE MAPS: N/A DATE OF AUTOMATION OR SOURCE: 1999 GEODATASET EXTENT: State of Florida
Datafile Name: SALZON.DBF ITEM NAME WIDTH TYPE PRECISION SHAPE 8 SHAPEPOLY 0 EDA_SZNAME 40 CHARACTER - REGION 1 CHARACTER - EDASUBEDA 5 CHARACTER - SZ_NAME 16 CHARACTER - AREA_MI2 8 DECIMAL 4 DESCRIPT 16 CHARACTER -
FEATURE ATTRIBUTE TABLES CODES AND VALUES:
ITEM ITEM DESCRIPTION SHAPE Data attribute inherent to the ESRI shapefile format, which defines the data as a point, polyline, or polygon. EDA_SZNAME A unique polygon name created by concatenating watershed (EDASUBEDA) code and Salinity Zone (SZ_NAME). REGION Region of the Coastal Assessment Framework. N - Polygons of the North Atlantic region. M - Polygons of the Middle Atlantic region. S - Polygons of the South Atlantic region. G - Polygons of the Gulf of Mexico region. P - Polygons of the Pacific region. L - Polygons of the Great Lakes region. U - Polygons within the US border, but not a part of the CAF. X - Polygons outside US boundaries. EDASUBEDA A code assigned to each derived spatial area (e.g., an EDA or CDA). Concatenated from the EDACDA attribute and SUBEDA attribute from NOAA's Coastal Assessment Framework. SZ_NAME A text description of each salinity zone Mixing Zone - 5 - 25 parts per thousand salinity. Seawater Zone - 25 parts per thousand or greater salinity Tidal Fresh Zone - 0 - 5 parts per thousand salinity AREA_MI2 Area of salinity zone in square statute miles (calculated from geographies in Albers equal-area conic projection; minor distortion above and below standard parallels). DESCRIPT FGDL added item based on SZ_NAME
USER NOTES:
The salinity zones are: - Tidal Fresh (0 - 0.5 parts per thousand) - Mixing Zone (0.5 - 25 parts per thousand) - Seawater Zone (25 parts per thousand or greater) The zones have been defined by drawing boundaries across open water from shoreline to shoreline. The shoreline and international boundaries in the geography come for NOAA's Coastal Assessment Framework. These salinity geographies cover the entire Atlantic, Gulf of Mexico, and Pacific coasts of the contiguous U.S.Currently, no salinity characterizations for Alaska, Hawaii, or any U.S. territories are available. The geography encompasses 100 percent of the land area within the contiguous United States. A note concerning data scale: Scale is an important factor in data usage. Certain scale datasets are not suitable for some project, analysis, or modelling purposes. Please be sure you are using the best available data. 1:24000 scale datasets are recommended for projects that are at the county level. 1:24000 data should NOT be used for high accuracy base mapping such as property parcel boundaries. 1:100000 scale datasets are recommended for projects that are at the multi-county or regional level. 1:250000 scale datasets are recommended for projects that are at the regional or state level or larger. Vector datasets with no defined scale or accuracy should be considered suspect. Make sure you are familiar with your data before using it for projects or analyses. Every effort has been made to supply the user with data documentation. For additional information, see the References section and the Data Source Contact section of this documentation. For more information regarding scale and accuracy, see our web pages at: http://www.geoplan.ufl.edu/education.html
FGDL QUALITY ASSURANCE STATUS:
-Projected data to FGDL Albers HPGN (See "Map Projection Parameters" below). -Clipped to the State of Florida -DESCRIPT item added based on SZ_NAME -Upcased all character records.
DATA LINEAGE SUMMARY:
The dataset was downloaded as a shapefile from the NOAA Special Project Office website (http://cammp.nos.noaa.gov/spo/prodlist.taf?alltype=3). When received, the data was in the following projection: Geographic, Datum: NAD 83, Spheroid: GRS80, Units: Decimal Degrees. The shapefile was clipped to the State of Florida, projected to FGDL Albers HPGN (See "Map Projection Parameters" below), DESCRIPT item was added, and all character items were upcased.
MAP PROJECTION PARAMETERS:
Projection ALBERS Units METERS Datum HPGN Spheroid GRS1980 1st standard parallel 24 0 0.000 2nd standard parallel 31 30 0.000 Central meridian -84 0 0.000 Latitude of projection's origin 24 0 0.000 False easting (meters) 400000.00000 False northing (meters) 0.00000
DATA SOURCES CONTACT(S):
Name: National Oceananic and Atmospheric Administration Abbr.name: NOAA/NOS/SPO Address: NOAA, N/SPO, 9th Floor 1305 East-West Highway Silver Spring, MD 20910 Phone: (301) 713-3000 x204 Fax: (301) 713-4384 Web site: http://cammp.nos.noaa.gov/spo/prodlist.taf?alltype=3 Ftp site: ftp://sposerver.nos.noaa.gov/datasets/CADS/GIS_Files/ShapeFiles/ Rivers_and_Lakes/RF1_Rivers/RF1_display/ Contact Person: Jacobsen, Mark Phone: (301) 713-3000 x204 Email: mark.jacobsen@noaa.gov
FGDL CONTACT:
Name: Florida Geographic Data Library Abbr. Name: FGDL Address: Florida Geographic Data Library 431 Architecture PO Box 115706 Gainesville, FL 32611-5706 Web site: http://www.fgdl.org Contact FGDL: Technical Support: http://www.fgdl.org/fgdlfeed.html FGDL Frequently Asked Questions: http://www.fgdl.org/fgdlfaq.html FGDL Mailing Lists: http://www.fgdl.org/fgdl-l.html For FGDL Software: http://www.fgdl.org/software.html