FLORIDA GEOGRAPHIC DATA LIBRARY DOCUMENTATION

TITLE: FLORIDA AQUIFER SYSTEM FAVA RESPONSE THEME

Geodataset Name:       FAS_RESPONSE
Geodataset Type:       RASTER
Geodataset Feature:    
Feature Count:         
GENERAL DESCRIPTION:
The Floridan Aquifer System Response theme grid is the relative vulnerability map for the Floridan Aquifer System. It was calculated using the ArcSDM extension and applying the weights of evidence and logistical regression method. The total number of unique conditions, number of training points per unique condition, evidential theme generalizations and posterior probability are contained in the table. A relative vulnerability class field is also in the table so that the grid can be symbolized based on FAVA vulnerability zones.
DATA SOURCE(S):                    Florida Department of Environmental Protection, Florida Geological Survey
SCALE OF ORIGINAL SOURCE MAPS:     Unknown
GEODATASET EXTENT:                 State of Florida
PUBLICATION DATE: Unknown TIME PERIOD OF CONTENT: unknown DOWNLOAD LINK: http://www.fgdl.org/metadataexplorer/explorer.jsp

FEATURE ATTRIBUTE TABLES:

Datafile Name: FAS_RESPONSE
ITEM NAME WIDTH TYPE
OBJECTID
4 OID
Value
4 Integer
Count
4 Integer
Area_sqm
8 Double
Trngpoints
4 Integer
Vul_int
4 Integer
VUL_CLASS2
16 String
Soil_perm
8 Double
Ias_thk
8 Double
K_buff60m
8 Double
Head_diff
8 Double
Lrpost_prob
8 Double
Lr_std_dev
8 Double
DESCRIPT
16 String
FGDLAQDATE
36 Date

FEATURE ATTRIBUTE TABLES CODES AND VALUES:

Item
Item Description
OBJECTID Internal feature number.

Value Number of unique conditions

Count Number of cells per unique condition

Area_sqm Area (sq meters)

Trngpoints Number of training points per unique condition

Vul_int Vulnerability class

VUL_CLASS2 Vulnerability class name

Soil_perm Generalization of soil permeability evidential theme

Ias_thk Generalization of IAS thickness evidential theme

K_buff60m Generalization of proximity to effective karst evidential theme

Head_diff Generalization of hydraulic head difference evidential theme

Lrpost_prob Logistic regression posterior probability - The probability that a unit cell contains a training point after considering the evidential themes.

Lr_std_dev Logistic regression standard deviation

DESCRIPT GeoPlan added field based on VUL_CLASS2

FGDLAQDATE Date GeoPlan downloaded data from source


USER NOTES:
This data is provided 'as is'. GeoPlan relied on the integrity
of the original data layer's topology
This data is provided 'as is' by GeoPlan and is complete to our
knowledge.
GeoPlan relied on the integrity of the attribute information within
the original data.

Development of a relative vulnerability map for the Floridan Aquifer System

This data is provided 'as is' and its horizontal positional accuracy
has not been verified by GeoPlan

This data is provided 'as is' and its vertical positional accuracy
has not been verified by GeoPlan

DISCLAIMER:
This geologic data was developed by the Florida Department of Environmental 
Protection (FDEP) - Florida Geological Survey (FGS) to carry out agency 
responsibilities related to management, protection, and development of Florida's 
natural resources. Although efforts have been made to make the information 
accurate and useful, the FDEP/FGS assumes no responsibility for errors in the 
information and does not guarantee that the data are free from errors or 
inaccuracies. Similarly FDEP/FGS assumes no responsibility for the consequences 
of inappropriate uses or interpretations of the data. As such, these digital data are 
distributed on "as is" basis and the user assumes all risk as to their quality, the 
results obtained from their use, and the performance of the data. FDEP/FGS bears 
no responsibility to inform users of any subsequent changes made to this data. 
Anyone using this data is advised that precision implied by the data may far 
exceed actual precision. Comments on this data are invited and FDEP/FGS would 
appreciate that documented errors be brought to staff attention. The development 
of these data sets represents a major investment of staff time and effort. As a 
professional responsibility, we expect that the FDEP/FGS will receive proper credit 
when you utilize these data sets. Further, since part of this data was developed 
and collected with U.S. Government or State of Florida funding, no proprietary 
rights may be attached to it in whole or in part, nor may it be sold to the U.S. 
Government or the Florida State Government as part of any procurement of 
products or services.

The Florida Geographic Data Library is a collection of Geospatial Data
compiled by the University of Florida GeoPlan Center with support from
the Florida Department of Transportation. GIS data available in FGDL is
collected from various state, federal, and other agencies (data sources)
who are data stewards, producers, or publishers. The data available in
FGDL may not be the most current version of the data offered by the
data source. University of Florida GeoPlan Center makes no guarantees
about the currentness of the data and suggests that data users check
with the data source to see if more recent versions of the data exist.

Furthermore, the GIS data available in the FGDL are provided 'as is'.
The University of Florida GeoPlan Center makes no warranties, guaranties
or representations as to the truth, accuracy or completeness of the data
provided by the data sources. The University of Florida GeoPlan Center
makes no representations or warranties about the quality or suitability
of the materials, either expressly or implied, including but not limited
to any implied warranties of merchantability, fitness for a particular
purpose, or non-infringement. The University of Florida GeoPlan Center
shall not be liable for any damages suffered as a result of using,
modifying, contributing or distributing the materials.

A note about data scale: 

Scale is an important factor in data usage.  Certain scale datasets
are not suitable for some project, analysis, or modeling 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.
1:125000 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 analysis. 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 webpage at:
http://geoplan.ufl.edu/education.html

REFERENCES:
Florida Geological Survey:
http://www.dep.state.fl.us/geology/

DATA LINEAGE SUMMARY:
The Floridan Aquifer Response theme grid is the relative vulnerability map for the 
Floridan Aquifer System.  It was calculated using the ArcSDM extension and 
applying the weights of evidence and logistic regression methods.  An analysis 
extent (study area), training point theme (fas_training_pts.shp), and modeling 
method (weights of evidence, logistic regression) are selected in the set analysis 
parameters.  Weights are then calculated on each evidential theme and then the 
themes are generalized (into binary patterns, ias_thk is the exception with three 
classes). A generalization of 1 represents "more vulnerable" areas, 2 represents 
"less vulnerable areas and -99 represents missing data.   A response theme is then 
calculated based on the association between training points and evidential 
themes. 

The total number of unique conditions, number of training points per unique 
condition, evidential theme generalizations and logistic regression posterior 
probability are contained in the table.  A relative vulnerability class field is also in 
the table so that the grid can be symbolized based on FAVA vulnerability zones.
Process Date: Unknown

GeoPlan downloaded this data from the following webpage on 3/5/10: http://www.dep.state.fl.us/geology/programs/hydrogeology/fava_gis_data.htm When received the raster data was in Albers HPGN. When the data was data was downloaded the following disclaimer had to be approved before download would initialize: This geologic data was developed by the Florida Department of Environmental Protection (FDEP) - Florida Geological Survey (FGS) to carry out agency responsibilities related to management, protection, and development of Florida's natural resources. Although efforts have been made to make the information accurate and useful, the FDEP/FGS assumes no responsibility for errors in the information and does not guarantee that the data are free from errors or inaccuracies. Similarly FDEP/FGS assumes no responsibility for the consequences of inappropriate uses or interpretations of the data. As such, these digital data are distributed on an "as is" basis and the user assumes all risk as to their quality, the results obtained from their use, and the performance of the data. FDEP/FGS bears no responsibility to inform users of any changes made to this data. Anyone using this data is advised that precision implied by the data may far exceed actual precision. Comments on this data are invited and FDEP/FGS would appreciate that documented errors be brought to staff attention. The development of these data sets represents a major investment of staff time and effort. As a professional responsibility, we expect that the FDEP/FGS will receive proper credit when you utilize these data sets. Further, since part of this data was developed and collected with U.S. Government or State of Florida funding, no proprietary rights may be attached to it in whole or in part, nor may it be sold to the U.S. Government or the Florida State Government as part of any procurement of products or services. -Added DESCRIPT based on VUL_CLASS2 -Added FGDLAQDATE based on date data downloaded from source Process Date: 20100308
Dataset copied. Process Date: 20100309
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 SOURCE CONTACT (S):

Name:
Abbr. Name:
Address:


Phone:

Web site:
E-mail:
Contact Person:
         Phone:
        E-mail:
Florida Department of Environmental Protection, Florida Geological Survey
FDEPFGS
Gunter Building MS #720, 903 W. Tennessee St.
Tallahassee, FL
32304-7700
850-488-4191

http:\\dep.state.fl.us\geology James Cichon

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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