FLORIDA GEOGRAPHIC DATA LIBRARY DOCUMENTATION

TITLE: RECHARGE AREAS OF THE FLORIDAN AQUIFER

Geodataset Name:      RCHARG
Geodataset Type:      SHAPE
Geodataset Feature:   POLYGON

GENERAL DESCRIPTION:

This dataset contains generalized recharge to and discharge from the
Floridan Aquifer System for the State of Florida.
DATA SOURCE(S):                   SOUTHWEST FLORIDA WATER MANAGEMENT DISTRICT
SCALE OF ORIGINAL SOURCE MAPS:    1,000,000
DATE OF AUTOMATION OR SOURCE:     1994
GEODATASET EXTENT:                Southwest Florida Water Management District Boundary

Datafile Name: RCHARG.DBF

ITEM NAME       WIDTH     TYPE      PRECISION

SHAPE             8      SHAPEPOLY      0
AREA              19     DECIMAL        5
PERIMETER         19     DECIMAL        5
FRRATE            24     CHARACTER      0
DATESTAMP         8      DATE           0
DESCRIPT          24     CHARACTER      0    

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 polygon in square meters

PERIMETER   Perimeter of polygon in meters
FRRATE      The recharge or discharge rate in inches per year
DATESTAMP   The date the feature was last edited or entered into the map libraries
            by SWFWMD staff
 
DESCRIPT    FGDL added item based on FRRATE 

USER NOTES:

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).
-DESCRIPT item added based on FRRATE
-Dropped old internal coverage items: FLRECHARGE, FLRECHAR_1
-Dropped FRSHADE item - the shade symbol used for drawing the layer in ArcPlot.

REFERENCES:

"Areal Variation in Recharge to and Discharge from the Floridan Aquifer System 
in Florida", U.S. Geological Survey Water-Resources Investigations Report 88-4057 
Walter R. Aucott, 1988. 

DATA LINEAGE SUMMARY:

In 2001, the GeoPlan Center downloaded this data in shapefile format from 
the Southwest Florida Water Management District website at:
http://www.swfwmd.state.fl.us/data/gis/shape_search.htm. When received, the 
data was in the following projection: UTM, Datum: NAD83, Spheroid: GRS1980, 
Units: Meters. The shapefile was reprojected to FGDL Albers HPGN (See "Map 
Projection Parameters" below), renamed from flrecharge to rcharg and old 
internal coverage items were dropped.

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:       Southwest Florida Water Management District                        
Abbr.name:  SWFWMD               
Address:    2379 Broad Street, Brooksville, Florida 34604                  
Phone:      (352) 796-7211                                      
Web site:   http://www.swfwmd.state.fl.us 
Ftp site:   http://www.swfwmd.state.fl.us/data/gis/libraries/physical_sparse.htm

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