FLORIDA GEOGRAPHIC DATA LIBRARY DOCUMENTATION

TITLE: PHYSIOGRAPHIC DIVISIONS OF FLORIDA - LINES

Geodataset Name:      PHYRGL
Geodataset Type:      SHAPE
Geodataset Feature:   LINE 

GENERAL DESCRIPTION:

This dataset contains the locations and names of physiographic units as defined by Dr. H.K. Brooks's "Physiographic Divisions of Florida" map and its accompanying guide.

DATA SOURCE(S):                  St. Johns River Water Management District
SCALE OF ORIGINAL SOURCE MAPS:   1:500,000
DATE OF AUTOMATION OR SOURCE:    Source: 1981;  Automation: 1997
GEODATASET EXTENT:               State of Florida

FEATURE ATTRIBUTE TABLES

Datafile Name: PHYRGL.DBF

NAME        WIDTH   TYPE      PRECISION
FNODE_       5      DECIMAL      -                        
TNODE_       5      DECIMAL      -                        
LPOLY_       5      DECIMAL      -                        
LENGTH      18      DECIMAL      5     
PHYRGL_      5      DECIMAL      -                      
PHYRGL_ID    5      DECIMAL      -                     
VERSION      1      DECIMAL      -                     
TYPE         2      DECIMAL      -                     
DESCRIPT    50      CHARACTER    -                    

FEATURE ATTRIBUTE TABLES CODES AND VALUES:

   ITEM              DESCRIPTION/VALUES
   
   VERSION           Distinguishes features digitized on 12/8/97 from those
                     digitized at an earlier date.
                     
   TYPE              Code for boundary type in the arc attribute table.
                          
                          1    Scarp Only
                          2    Unknown Feature, connected to 'Scarp Only'
                               feature
                          3    Unknown Feature, disconnected
                         10    Section boundary, no scarp
                         11    Section boundary, scarp
                         19    Section boundary, added to close polygon
                         20    District boundary, no scarp
                         21    District boundary, scarp
                         29    District boundary, added to close polygon
                         30    Province boundary, no scarp
                         31    Province boundary, scarp
                         39    Province boundary, added to close polygon
   DESCRIPT         Item added for FGDL; Based on TYPE item.

USER NOTES:

Please note the original data is in regions, therefore this data layer is made of both lines and polygons.

Fairly detailed descriptions for each physiographic division are given in "The Guide to Physiographic Divisions of Florida." Descriptions include information about elevation, geology, soils, and vegetation.

FGDL QUALITY ASSURANCE STATUS:

-Coverage was rePROJECTed from UTM Zone 17 to FGDL Albers.
-Tolerances were set to FGDL standards.
-All attribute records were converted to uppercase format.
-DESCRIPT item added based on TYPE

REFERENCES:

Brooks, H. K. 1981. Physiographic Divisions of Florida. Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. 1 map : col. ; 150 x 105 cm. + 1 accompanying text, "Guide to Physiographic....", (<12> p. ; 28 cm.)

DATA LINEAGE SUMMARY:

   The source map was developed in 1981 on a 1:500:000 scale basemap provided by
   U.S. Geological Survey.
     
   The Physiographic Regions layer was developed in two stages.  At first,
   only the area within St. Johns River Water Management District was digitized
   sometime before October 1995.  Then in December 1997, the rest of the 
   features on the map were added to the data layer.  Initial arc features 
   possess a VERSION value of 1, while secondary arc features possess a VERSION
   value of 2.
   Spatial accuracy is questionable with this data layer and should be assessed
   before the layer is determined to be an appropriate component for a
   particular analysis.  This problem is due to the condition of the source
   document, the two-step development process.
   
   The original dataset existed in UTM, Zone 17, NAD 1983, 1990 Adjustment.

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:               ST. JOHN'S RIVER WATER MANAGEMENT 
                    DISTRICT
Abbr. Name:         SJRWMD
Address:            St. John's River Water Management District
                    P.O. Box 1429
                    Palatka FL 32178-1429
Phone:              (904) 329-4500
Fax:                1-800-451-7106
Web site:           http://sjr.state.fl.us
Contact Person:     Data Administrator

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

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