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

FEATURE ATTRIBUTE TABLES:
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