FLORIDA GEOGRAPHIC DATA LIBRARY DOCUMENTATION
VERSION 2005

TITLE: STATEWIDE TIDAL FLATS

Geodataset Name: 	TIDEFL
Geodataset Type: 	SHAPE
Geodataset Feature: 	POLYGON

GENERAL DESCRIPTION:

This dataset contains statewide tidalflat locations for Florida.

DATA SOURCE(S):  			Florida Marine Research Institute (FMRI)

SCALE OF ORIGINAL SOURCE MAPS:    	1:24,000

DATE OF AUTOMATION OR SOURCE:		Source 1999

GEODATASET EXTENT:  			State of Florida

FEATURE ATTRIBUTE TABLES:

Datafile Name: TIDEFL.DBF
 
ITEM NAME         WIDTH      TYPE     PRECISION 

SHAPE		     8	   SHAPEPOLY      -
AREA                19     DECIMAL        3                        
PERIMETER           19     DECIMAL        3                        
TDLFLAT              1     DECIMAL        -                        
SOURCE              10     CHARACTER      -                        
DATE                 8     CHARACTER      -                        
DESCRIPT            50     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.

AREA         Area of the polygon in square meters

PERIMETER    Perimeter of the polygons in meters

TDLFLAT	     NUMERICAL TIDAL FLAT INDICATOR

SOURCE	     SOURCE OF INFORMATION	
		NWI   = NATIONAL WETLANDS INVENTORY
                SWFMD = SOUTHWEST FLORIDA WATER MANAGEMENT DISTRICT

DATE	     DATE OF INFORMATION AUTOMATION

DESCRIPT     BASED ON SOURCE ITEM
		TIDAL FLAT - NWI
		TIDAL FLAT - SWFWMD
		OUTPARCEL

USER NOTES:

These polygons were extracted from the National Wetland Inventory (NWI) Coverages. Additional information provided 
by the Southwest Florida Water Management District.

FGDL QUALITY ASSURANCE STATUS:

-Tolerances Set to Geoplan Standards
-Reprojected to FGDL Albers

DATA LINEAGE SUMMARY:

Contructed by FMRI
Based on data from the U.S. Fish and Wildlife Service (USFWS) National Wetlands Inventory (NWI) and data
from the Southwest Florida Water Management District.

NWI maps are compiled through manual photointerpretation ( using Cartgraphic
Engineering 4X Mirror Stereoscopes) of NHAP or NAPP aerial photography
supplemented by Soil Surveys and field checking of wetland photo signatures.
Delineated wetland boundaries are manually transferred from interpreted
photos to USGS 7.5 minute topographic quadrangle maps and then manually
labelled. Quality control steps occur throughout the photointerpretation,
map compilation, and map reproduction processes.

Digital wetlands data are either manually digitized or scanned from
stable-base copies of the 1:24,000 scale wetlands overlays registered to the
standard U.S. Geological Survey (USGS) 7.5 minute quadrangles into
topologically correct data files using Wetlands Analytical Mapping System
(WAMS) software. Files contain ground planimetric coordinates and wetland
attributes. The quadrangles were referenced to the North American Datum of
1927 (NAD27) horizontal datum. The scanning process captured the digital
data at a scanning resolution of at least 0.001 inches; the resulting raster
data were vectorized and then attributed on an interactive editing station.
Manual digitizing used a digitizing table to capture the digital data at a
resolution of at least 0.005 inches; attribution was performed as the data
were digitized. The determination of scanning versus manual digitizing
production method was based on feature density, source map quality, feature
symbology, and availability of production systems. The data were checked for
position by comparing plots of the digital data to the source material.

U.S. FISH AND WILDLIFE SERVICE
NATIONAL WETLANDS INVENTORY
OFFICE OF BIOLOGICAL SERVICES
WASHINGTON, D.C. 20240
(301) 358-2201

MAP PROJECTION PARAMETERS

PROJECTION 				ALBERS
DATUM 					HPGN
UNITS 					METERS
SPHEROID 				GRS1980
1st standard parallel			24  0  0.000
2nd standard parallel			31 30  0.000
central meridian			-84 00  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: 			Florida Marine Research Institute
			Coastal and Marine Resource Assessment
Abbr.name: 		FMRI (CAMARA)
Address: 		100 8th Ave SE.
			St. Petersburg, FL 33701-5095					
Phone: 			(727) 896-8626, SUNCOM: 523-1011
Website:		www.fmri.usf.edu
Ftp site:	        ftp://ftp.fmri.usf.edu
Contact Person: 	GIS Data Librarian
         Phone: 	(727) 896-8626

FGDL CONTACT:

Name:			Florida Geographic Data Library
Abbr. Name:		FGDL
Address:		Florida Geographic Data Library
                        431 Architecture Building
                        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