FLORIDA GEOGRAPHIC DATA LIBRARY DOCUMENTATION

TITLE: THREATS TO FLORIDA'S FRESHWATER HABITATS - 2008

Geodataset Name:       FRESHWTRTHREAT_JUL08
Geodataset Type:       SHAPEFILE
Geodataset Feature:    Polygon
Feature Count:         1347
GENERAL DESCRIPTION:
This shapefile shows raw data for 10 categories representing threats to Florida's freshwater habitats as listed in the Comprehensive Wildlife Conservation Strategy, 2005, from the Florida Fish & Wildlife Conservation Commission. The raw data from these 10 uncorrelated threat categories were transformed to index values and a composite map of threats was created, the data is displayed as polygons of HUC 12 units within Florida that show levels of threats to freshwater habitats. The ten threat categories are; Non-Native/Exotic Invasive Aquatic Plants, Waterway Modification, Federal Dam Structure(s), Ground Water Withdrawal, Non-Native/Exotic Invasive Aquatic Animals, Riparian/Freshwater Buffer Zone Agricultural Land Concentration, Surface Water Withdrawal, Verified Impaired Waters, Water Control Structures, Weighted Road Density. The ten categories listed here do not represent all threat data available. Please see the final report "Mapping Threats to Florida's Freshwater Habitats" for more information.
DATA SOURCE(S):                    Florida Fish and Wildlife Conservation Commission-Fish and Wildlife Research Institute
SCALE OF ORIGINAL SOURCE MAPS:     N/A
GEODATASET EXTENT:                 State of Florida
PUBLICATION DATE: 20080708 TIME PERIOD OF CONTENT: 20080708 DOWNLOAD LINK: http://www.fgdl.org/metadataexplorer/explorer.jsp

FEATURE ATTRIBUTE TABLES:

Datafile Name: FRESHWTRTHREAT_JUL08.DBF
ITEM NAME WIDTH TYPE
OBJECTID
4 OID
Shape
4 Geometry
FLHUA_ID
4 Integer
HUC_12
12 String
LC_OVERLAP
8 Double
animal_I
8 Double
dam_avg_I
8 Double
ground_I
8 Double
plants_I
8 Double
ag_I
8 Double
surface_I
8 Double
quality_I
8 Double
WSC_I
8 Double
pct_mod_I
8 Double
road_I
8 Double
sum
8 Double
max
8 Double
overall
8 Double
ANIMAL
8 Double
DAM_AVG
8 Double
GROUND_AVG
8 Double
PLANTS
8 Double
RAGT90
8 Double
TGRFDOT_RD
8 Double
SURFACE
8 Double
WATER_QUAL
8 Double
WCS_DENSIT
8 Double
PCT_MOD
8 Double
COUNT4_
8 Double
MAIN_FACTO
254 String
dam_S
8 Double
ground_S
8 Double
surface_S
8 Double
pct_S
8 Double
mod_S
8 Double
road_S
8 Double
animal_S
8 Double
plant_S
8 Double
WCS_S
8 Double
RAGT90_S
8 Double
DESCRIPT
110 String
FGDLAQDATE
36 Date
AUTOID
4 Integer
SHAPE.AREA
0 Double
SHAPE.LEN
0 Double

FEATURE ATTRIBUTE TABLES CODES AND VALUES:

Item
Item Description
OBJECTID Internal feature number.

Shape Feature geometry.

FLHUA_ID Internal reference ID links records to the Florida Hydrography Dataset (FHD)

HUC_12 Hydrologic Unit Code

LC_OVERLAP This value represents percent overlap between the HUC 12 unit and the 2003 Vegetation and Land Cover Data from FL FWC. Data summarized by HUC 12 units that span the Alabama or Georgia border represent conditions only within the state boundary of Florida. No information on conditions within Alabama or Georgia was included. It is recommended to use with care those HUC 12 units with less than 95% overlap. Otherwise the condition of the HUC 12s which border Alabama or Georgia may be misrepresented.

animal_I Index value for the number of unique invasive non-native/exotic aquatic animal species per HUC 12 unit-- recoded from raw data

dam_avg_I Index value for average normal storage of federal dam structures summarized by HUC 12 unit -- recoded from raw data

ground_I Index value for total permitted average daily withdrawal rate of ground water per HUC 12 unit-- recoded from raw data

plants_I Index value for the number of invasive non-native/exotic aquatic plant species per HUC 12 unit-- recoded from raw data

ag_I Index value for percent agricultural land cover within 90 meters of freshwater summarized by HUC 12 unit-- recoded from raw data

surface_I Index value for total permitted average daily rate of surface water withdrawal per HUC 12 unit-- recoded from raw data

quality_I Index value for water quality impairment summarized by HUC 12 unit-- recoded from raw data

WSC_I Index value for water control structure density summarized by HUC 12 unit -- recoded from raw data

pct_mod_I Index value for percent waterway modification from channelization or canals summarized by HUC 12 unit -- recoded from raw data

road_I Index value for weighted road density per HUC 12 unit-- recoded from raw data

sum Cumulative index values summed across all 10 threat categories for each HUC 12 unit

max Maximum index value of the 10 threat categories for each HUC 12 unit

overall 3-digit number where the first digit represents the max. index value and the second two digits represent the cumulative index value for a HUC 12 unit

ANIMAL Raw data on the number of unique invasive non-native/exotic aquatic animal species established within a HUC 12 unit

DAM_AVG Raw data on the average normal storage of federal dam structures within a HUC 12 unit

GROUND_AVG Raw data on the total permitted average daily rate of ground water withdrawal per HUC 12 unit

PLANTS Raw data on the total number of unique invasive non-native/exotic aquatic plant species within a HUC 12 unit

RAGT90 Raw data on the percent agricultural land cover within 90 meters of freshwater for each HUC 12 unit

TGRFDOT_RD Raw data on the weighted road density (km of roads/square km of HUC 12 unit area) for each HUC 12 unit

SURFACE Raw data on the total permitted average daily rate of surface water withdrawal per HUC 12 unit

WATER_QUAL Raw data on verified impaired water quality based on FL DEP and US EPA standards summarized by HUC 12 unit

WCS_DENSIT Raw data on non federal water control structure density (# of structures per km of waterways) per HUC 12 unit

PCT_MOD Raw data on the percent of modified waterways due to channelization and/or canals per HUC 12 unit

COUNT4_ The number of threat categories out of 10 with an index value of 4, 5, or 6 in each HUC 12 unit

MAIN_FACTO This text field lists the threat category or categories responsible for the maximum index value for a HUC 12 unit
AGRICULTURE = Riparian/Freshwater Buffer Zone Agricultural Land Concentration.

ANIMALS = Non-Native/Exotic Invasive Aquatic Animals.

CONTROL STRUCTURES = Water Control Structures.

FED. DAMS = Federal Dam Structure(s).

GROUND WATER USE = Ground Water Withdrawal.

MODIFICATION = Waterway Modification.

PLANTS = Non-Native/Exotic Invasive Aquatic Plants.

ROAD DENSITY = Weighted Road Density.

SURFACE WATER USE = Surface Water Withdrawal.

WATER QUALITY = Verified Impaired Waters.


dam_S Standardized raw data for federal dams, 999 values represent true zeros

ground_S Standardized raw data for ground water, 999 values represent true zeros

surface_S Standardized raw data for surface water, 999 values represent true zeros

pct_S Standardized raw data for water quality, 999 values represent true zeros

mod_S Standardized raw data for waterway modification, 999 values represent true zeros

road_S Standardized raw data for weighted road density, 999 values represent true zeros

animal_S Standardized raw data for animals, 999 values represent undetermined zeros

plant_S Standardized raw data for plants, 999 values represent undetermined zeros

WCS_S Standardized raw data for water control structure density, 999 values represent undetermined zeros

RAGT90_S Standardized raw data for agricultural land cover, 999 values represent true zeros

DESCRIPT Based on the field MAIN_FACTO.

FGDLAQDATE Date FGDL acquired the data from the Source.

AUTOID Unique ID added by GeoPlan

SHAPE.AREA Area in meters

SHAPE.LEN Perimeter in meters


USER NOTES:
FFWCC: all attributes fall within defined values
FFWCC: index values were obtained using natural breaks method in ArcGIS to categorize 
the raw data of each threat category into 5 categories (representing index values 
2-6).  True zero values along with "undetermined/unknown zero" values were 
excluded from the natural breaks categorization and were assigned the lowest 
index value, 1.  Three out of 10 threat categories had "undetermined 
zeros"--animals, plants and water control structures.  In these cases it is unknown
if a zero value for a HUC 12 unit represents the true absence of that threat or if 
the threat is there but has not yet been documented.  For the water quality data 
categorization, all raw data with values <1 were assigned the lowest index value 1 
due to slivers created by the overlap of FL DEP data and HUC 12 boundary units.
 Please see "Mapping Threats to Florida's Freshwater Habitats" final report or the 
metadata for the water quality shapefile for additional information.
GeoPlan relied on the integrity of the attribute information within
the original data.
A.1.1. DATA LAYERS/SHAPEFILES FOR COMPOSITE ASSESSMENT
The 10 individual data layers (a-j) in this section are also included in the composite
index.  Some of these data layers have associated intermediate point data layers.

a. Non-native/exotic invasive aquatic plants
b. Waterway modification
c. Federal dam location summary
d. Ground water withdrawal points and summary
e. Non-native/exotic invasive aquatic animals
f. Riparian/freshwater buffer zone landcover analysis - subwatershed (HUC 12) level
g. Surface water withdrawal points and summary
h. Verified impaired waters
i. Water control structures points and summary
j. Weighted road density


------------------------------------------------------------------------

Prior to July 1, 2004, the Fish and Wildlife Research Institute (FWRI) was known 
as the Florida Marine Research Institute (FMRI). The institute name has not been 
changed in historical data sets or references to work completed by the Florida 
Marine Research Institute. The institute name has been changed in references to 
ongoing research, new research, and contact information.

To assess threats to Florida's freshwater habitats.

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

FWCC: Acknowledgment of the Florida Fish and Wildlife Conservation Commission-Fish 
and Wildlife Research Institute as the data source would be appreciated in any 
products developed from these data, and such acknowledgment as is standard 
for citation and legal practices for data source is expected by users of this data.  
Please cite the original metadata when using portions of the record to create a 
similar record of slightly altered data, such as reprojection. If any data are modified 
or adjusted, please share the edited information with FWC. Users should be aware 
that comparison with other data sets for the same area from other time periods may
be inaccurate due to inconsistencies resulting from changes in mapping 
conventions, data collection, and computer processes over time. FWC shall not 
be liable for improper or incorrect use of this data. These data are not legal 
documents and are not to be used as such.  This is not a survey data set and 
should not be utilized as such. These data are not to be used for navigation.

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:
Mapping Threats to Florida Freshwater Habitats
http://research.myfwc.com/features/view_article.asp?id=31464

Mapping Threats to Florida Freshwater Habitats - Final Report: Project # CWT 0708-03
http://www.myfwc.com/GIS/freshwater/cwt0708-03_final.pdf

DATA LINEAGE SUMMARY:
See: Mapping Threats to Florida Freshwater Habitats - Final Report: Project # CWT 0708-03, 
for the original data, methods, and process steps.
http://www.myfwc.com/GIS/freshwater/cwt0708-03_final.pdf
Process Date: 20080708

The GeoPlan Center downloaded the index_final_rev.shp dataset on June 16th, 2010 from the FFWCC Mapping Threats to Florida Freshwater Habitats Website. (http://research.myfwc.com/features/view_article.asp?id=31464) (http://www.myfwc.com/GIS/freshwater/threats_data.zip) The original dataset was renamed to freshwtrthreat_jul08.shp The dataset's projection file was redefined from FFWCC Albers to FGDL Albers. The dataset's fields were upcased and two new fields were added. DESCRIPT - based on MAIN_FACTO. FGDLAQDATE - based on the data the data was downloaded from the source. Process Date: 20100616
Data imported to ArcSDE and exported as a shapefile. Process Date: 20100921
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 Fish and Wildlife Conservation Commission-Fish and Wildlife Research Institute
FFWCC
100 Eighth Avenue Southeast
St. Petersburg, Florida
33701
727-896-8626

http://research.myfwc.com/features/view_article.asp?id=31464 GISLibrarian@MyFWC.com GISLibrarian

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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