FLORIDA GEOGRAPHIC DATA LIBRARY DOCUMENTATION

TITLE: PRIME FARMLAND (SPATIAL VIEW OF NRCS_SOILS) - SEPTEMBER 2018

Geodataset Name:       SV_PRIMEFARM_SEP18
Geodataset Type:       SDE Feature Class
Geodataset Feature:    Polygon
Feature Count:         160714
GENERAL DESCRIPTION:
This data set represents the prime farmland and farmland of unique and local importance based on the layer nrcs_soils. This layer is a spatial view and is created by the following sql query: FRMLNDCL = 'ALL AREAS ARE PRIME FARMLAND' OR FRMLNDCL = 'PRIME FARMLAND IF DRAINED AND EITHER PROTECTED FROM FLOODING OR NOT FREQUENTLY FLOODED DURING THE GROWING SEASON' OR FRMLNDCL = 'PRIME FARMLAND IF DRAINED' OR FRMLNDCL = 'FARMLAND OF LOCAL IMPORTANCE' OR FRMLNDCL = 'FARMLAND OF UNIQUE IMPORTANCE'
DATA SOURCE(S):                    U.S. Department of Agriculture, Natural Resources Conservation Service
SCALE OF ORIGINAL SOURCE MAPS:     24000
GEODATASET EXTENT:                 State of Florida
PUBLICATION DATE: Varies by County TIME PERIOD OF CONTENT: Begin Date: 1990 End Date: 201809 DOWNLOAD LINK: http://www.fgdl.org/metadataexplorer/explorer.jsp

FEATURE ATTRIBUTE TABLES:

Datafile Name: SV_PRIMEFARM_SEP18
ITEM NAME WIDTH TYPE
OBJECTID
4 OID
SHAPE
4 Geometry
AREASYMBOL
20 String
SPATIALVER
8 Double
MUSYM
6 String
MUKEY
30 String
COMPNAME
60 String
COMPPCT
2 SmallInteger
MUNAME
175 String
MUACRES
4 Integer
TEXTURE
30 String
BROCKDEPMI
2 SmallInteger
HYDRICRATI
10 String
DRAINAGECL
30 String
NIRRCAPCL
5 String
HYDRGRP
5 String
CORCON
10 String
CORSTEEL
10 String
MUKIND
25 String
FRMLNDCL
125 String
FLODFREQDC
15 String
FLODFREQMA
15 String
ENGLRSDCD
30 String
DESCRIPT
60 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.

AREASYMBOL Area Symbol: A symbol that uniquely identifies a single occurrence of a particular type of area (e.g. Lancaster Co., Nebraska)

SPATIALVER Spatial Version: A sequential integer number used to denote the serial version of the spatial data for a soil survey area.

MUSYM Mapunit Symbol: The symbol used to uniquely identify the soil mapunit in the soil survey.

MUKEY Mapunit Key: A non-connotative string of characters used to uniquely identify a record in the Mapunit table.

COMPNAME Component Name: Name assigned to a component based on its range of properties.

COMPPCT Component Percent: The percentage of the component of the map unit.

MUNAME Mapunit Name: Correlated name of the mapunit (recommended name or field name for surveys in progress).

MUACRES Total Acres: The number of acres of a particular map unit within the geographic area to which the legend applies. The number listed here may differ from that measured using GIS software due to different measuring techniques and rounding practices, or due to the fact that the value has been adjusted so that the sum total of all map units in the legend equals that listed for soil survey area.

TEXTURE Tex Mod & Class: Name for the concatenation of TEXTURE_MODIFIER and TEXTURE_CLASS.

BROCKDEPMI Bedrock Depth - Minimum: The distance from the soil surface to the top of a bedrock layer, expressed as a shallowest depth of components whose composition in the map unit is equal to or exceeds 15%.

HYDRICRATI Hydric Rating: A yes/no field that indicates whether or not a map unit component is classified as a "hydric soil". If rated as hydric, the specific criteria met are listed in the Component Hydric Criteria table.

DRAINAGECL Drainage Class: Identifies the natural drainage conditions of the soil and refers to the frequency and duration of wet periods. An example of a drainage class is well drained.

NIRRCAPCL Non Irrigation Capability Class: The broadest category in the land capability classification system for nonirrigated soils.

HYDRGRP Hydrologic Group: A group of soils having similar runoff potential under similar storm and cover conditions. Examples are A and A/D. (NSSH)

CORCON Corrosion Concrete: Susceptibility of concrete to corrosion when in contact with the soil.

CORSTEEL Corrosion Steel: Susceptibility of uncoated steel to corrosion when in contact with the soil.

MUKIND Mapunit Kind: Code identifying the kind of mapunit. Example: C - consociation.

FRMLNDCL Farmland Classification: Identification of map units as prime farmland, farmland of statewide importance, or farmland of local importance.

FLODFREQDC Flooding Frequency - Dominant Condition: The annual probability of a flood event expressed as a class. This column displays the dominant flood frequency class for the map unit, based on composition percentage of map unit components whose composition in the map unit is equal to or exceeds 15%.

FLODFREQMA Flooding Frequency - Maximum: The annual probability of a flood event expressed as a class. This column displays the highest probability class assigned to an individual component of the map unit whose composition in the map unit is equal to or exceeds 15%.

ENGLRSDCD The rating of the map unit as a site for local roads and streets, expressed as the dominant rating class for the map unit, based on composition percentage of each map unit component.

DESCRIPT GeoPlan added field based on Compname

FGDLAQDATE Date GeoPlan acquired data from source.

AUTOID Unique ID added by GeoPlan

SHAPE.AREA Area in meters

SHAPE.LEN Perimeter in meters

Map Unit Delineations are closed polygons that may be dominated
by a single soil or nonsoil component plus allowable similar or
dissimilar soils, or they can be geographic mixtures of groups
of soils or soils and nonsoil areas.

The map unit symbol uniquely identifies each closed delineation
map unit. Each symbol is linked to a map unit name. The map unit
symbol is also the key for linking information in the National Soil
Information System tables. The map unit symbols are not carried
within the modified Digital Line Graph file; however, they are made
available in a companion attribute file. The attribute file links
the minor codes in the Digital Line Graph files to the map unit
symbols.

Map Unit Delineations are described by the National Soil
Information System database. This attribute database gives the
proportionate extent of the component soils and the properties for
each soil. The database contains both estimated and measured data
on the physical and chemical soil properties and soil
interpretations for engineering, water management, recreation,
agronomic, woodland, range, and wildlife uses of the soil.

The National Soil Information System database contains static
metadata. It documents the data structure and includes such
information as what tables, columns, indexes, and relationships
are defined as well as a variety of attributes of each of these
database objects.  Attributes include table and column
descriptions and detailed domain information.

The National Soil Information System database also contains a
distribution metadata. It records the criteria used for selecting
map units and components for inclusion in the set of distributed
data.

Special features are described in the feature table.  It includes a
feature label, feature name, and feature description for each
special and ad hoc feature in the survey area.
USER NOTES:
Certain node/geometry and topology GT- polygon/chain relationships
are collected or generated to satisfy topological requirements
(the GT-polygon corresponds to the soil delineation). Some of these
requirements include: chains must begin and end at nodes, chains
must connect to each other at nodes, chains do not extend through
nodes, left and right GT-polygons are defined for each chain
element and are consistent throughout, and the chains representing
the limits of the file (neatline) are free of gaps. The tests of
logical consistency are performed using vendor software. The
neatline is generated by connecting the explicitly entered four
corners of the digital file. All data outside the enclosed region
are ignored and all data crossing these geographically straight
lines are clipped at the neatline. Data within a specified tolerance
of the neatline are snapped to the neatline. Neatline straightening
aligns the digitized edges of the digital data with the generated
neatline (i.e., with the longitude/latitude lines in geographic
coordinates). All internal polygons are tested for closure with
vendor software and are checked on hard copy plots. All data are
checked for common soil lines (i.e., adjacent polygons with the
same label). Quadrangles are edge matched within the soil survey
area and edge locations generally do not deviate from centerline to
centerline by more than 0.01 inch.
A map unit is a collection of areas defined and named the same in
terms of their soil and/or nonsoil areas. Each map unit differs
in some respect from all others in a survey area and is uniquely
identified. Each individual area is a delineation. Each map unit
consists of one or more components.

Soil scientists identify small areas of soils or miscellaneous
(nonsoil) areas that have properties and behavior significantly
different than the named soils in the surrounding map unit. These
minor components may be indicated as special features. If they
have a minimal effect on use and management, or could not be
precisely located, they may not be indicated on the map.

Specific National Cooperative Soil Survey standards and procedures
were used in the classification of soils, design and name of map
units, and location of special soil features. These standards are
outlined in Agricultural Handbook 18, Soil Survey Manual, 1993,
USDA, SCS; Agricultural Handbook 436, Soil Taxonomy, Soil Survey
Staff, 1975, USDA, SCS; and all Amendments; Keys to Soil Taxonomy,
Soil Survey Staff, (current issue); National Soil Survey
Handbook, title 430-VI, (current issue).

The actual composition and interpretive purity of the map unit
delineations were based on data collected by scientists during
the course of preparing the soil maps. Adherence to National
Cooperative Soil Survey standards and procedures is based on
peer review, quality control, and quality assurance. Quality
control is outlined in the memorandum of understanding for the
soil survey area and in documents that reside with the Natural
Resources Conservation Service state soil scientist. Four kinds
of map units are used in soil surveys: consociations, complexes,
associations, and undifferentiated groups.

Consociations - Consociations are named for the dominant soil. In
a consociation, delineated areas are dominated by a single soil
taxon and similar soils. At least one half of the pedons in each
delineation are of the same soil component so similar to the
named soil that major interpretations are not affected
significantly. The total amount of dissimilar inclusions of
other components in a map unit generally does not exceed about
15 percent if limiting and 25 percent if nonlimiting. A single
component of a dissimilar limiting inclusion generally does not
exceed 10 percent if very contrasting.

Complexes and associations - Complexes and associations are named
for two or more dissimilar components with the dominant component
listed first. They occur in a regularly repeating pattern. The major
components of a complex cannot be mapped separately at a scale of
about 1:24,000. The major components of an association can be
separated at a scale of about 1:24,000. In each delineation of
either a complex or an association, each major component is normally
present, though their proportions may vary appreciably from one
delineation to another. The total amount of inclusions in a map unit
that are dissimilar to any of the major components does not exceed
15 percent if limiting and 25 percent if nonlimiting. A single kind
of dissimilar limiting inclusion usually does not exceed 10 percent.

Undifferentiated groups - Undifferentiated groups consist of two
or more components that do not always occur together in the same
delineation, but are included in the same named map unit because
use and management are the same or similar for common uses. Every
delineation has at least one of the major components and some may
have all of them. The same principles regarding proportion of
inclusions apply to undifferentiated groups as to consociations.

Minimum documentation consists of three complete soil profile
descriptions that are collected for each soil added to the legend,
one additional per 3,000 acres mapped; three 10 observation
transects for each map unit, one additional 10 point transect per
3,000 acres.

A defined standard or level of confidence in the interpretive
purity of the map unit delineations is attained by adjusting the
kind and intensity of field investigations. Field investigations
and data collection are carried out in sufficient detail to name
map units and to identify accurately and consistently areas of
about 3 or 4 acres.
GeoPlan relied on the integrity of the attribute information within
the original data.
This data set consists of georeferenced digital map data and
computerized attribute data. The map data are in a 7.5 minute
quadrangle format and include a detailed, field verified inventory
of soils and nonsoil areas that normally occur in a repeatable
pattern on the landscape and that can be cartographically shown at
the scale mapped. A special soil features layer (point and line
features) is optional. This layer displays the location of features
too small to delineate at the mapping scale, but they are large
enough and contrasting enough to significantly influence use and
management. The soil map units are linked to attributes in the
National Soil Information System relational database, which gives
the proportionate extent of the component soils and their properties.

Digital versions of hydrography, cultural features, and other
associated layers that are not part of the SSURGO data set may be
available from the primary organization listed in the Point of
Contact.

SSURGO depicts information about the kinds and distribution of
soils on the landscape. The soil map and data used in the SSURGO
product were prepared by soil scientists as part of the National
Cooperative Soil Survey.

This soil survey contains information that can be applied in
managing farms and wetlands; in selecting sites for roads, ponds,
buildings, and other structures; and in judging the suitability
of tracts of land for farming, industry, and recreation.

This soil survey depicts information about the kinds and
distribution of soils on the landscape. The soil map and data
used in the SSURGO product were prepared by soil scientists as
part of the National Cooperative Soil Survey

The accuracy of these digital data is based upon their
compilation to base maps that meet National Map Accuracy
Standards. The difference in positional accuracy between the
soil boundaries and special soil features locations in the
field and their digitized map locations is unknown. The
locational accuracy of soil delineations on the ground varies
with the transition between map units.

For example, on long gently sloping landscapes the transition
occurs gradually over many feet. Where landscapes change
abruptly from steep to level, the transition will be very
narrow. Soil delineation boundaries and special soil features
generally were digitized within 0.01 inch of their locations on
the digitizing source. The digital map elements are edge matched
between data sets. The data along each quadrangle edge are
matched against the data for the adjacent quadrangle. Edge
locations generally do not deviate from centerline to centerline
by more than 0.01 inch.

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

The U.S. Department of Agriculture, Natural Resources Conservation
Service, should be acknowledged as the data source in products
derived from these data.

This data set is not designed for use as a primary regulatory tool
in permitting or citing decisions, but may be used as a reference
source. This is public information and may be interpreted by
organizations, agencies, units of government, or others based on
needs; however, they are responsible for the appropriate
application. Federal, State, or local regulatory bodies are not to
reassign to the Natural Resources Conservation Service any
authority for the decisions that they make. The Natural Resources
Conservation Service will not perform any evaluations of these maps
for purposes related solely to State or local regulatory programs.

Photographic or digital enlargement of these maps to scales greater
than at which they were originally mapped can cause misinterpretation
of the data. If enlarged, maps do not show the small areas of
contrasting soils that could have been shown at a larger scale. The
depicted soil boundaries, interpretations, and analysis derived from
them do not eliminate the need for onsite sampling, testing, and
detailed study of specific sites for intensive uses. Thus, these data
and their interpretations are intended for planning purposes only.
Digital data files are periodically updated. Files are dated, and
users are responsible for obtaining the latest version of the data.

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:
Natural Resources Conservation Service Soils:
https://www.nrcs.usda.gov/wps/portal/nrcs/site/soils/home/

DATA LINEAGE SUMMARY:
GeoPlan downloaded this data from the NRCS in February 2019  from the NRCS 
webpage: https://websoilsurvey.sc.egov.usda.gov in access and 
shapefile format. Python scripts in ArcGIS 9.3.1 were run  that joined various fields 
from the access tables to the shapefile. Because the soils database is a relational 
database and data has been joined to a shapefile some  data will be lost. Data 
was joined from 5 different tables within the access  database: MUAGGATT, 
MAPUNIT, COMPONENT, CHORIZON,  CHTEXTUREGRP. In order to 
accommodate the flat file nature of the shapefile only the soils with the highest 
component percentage from the COMPONENT  table were used. In addition, only 
the surface Horizon was used from the CHORIZON table.

From these 5 tables only data from a selected group of fields were joined to the 
shapefile. If you wish to get more data then you can visit NRCS website and 
download the access database for your county.

Detailed metadata is available for each individual county in FGDC format. A generic 
metadata was created based on the county metadata. If more detailed information is 
needed than what is found in this generic metadata, please locate the metadata for 
the area of interest. To find the correct source metadata find the FL### value from 
the AREASYMBOL field. An FGDC text format metadata should be distributed along 
with the data.

-When received the shapefiles were in WGS84 and were projected to Albers HPGN
using the ITRF00 transformation
-DESCRIPT field added based on COMPNAME
-FGDLAQDATE added based on date GeoPlan acquired data.

The previous version from 2012 was downloaded in Geographic NAD83 
and the latest data is in WGS84. During the projection from WGS84 to Albers
HARN the ITFR00 transformation was used.
Process Date: 20190205

This layer is a spatial view based on the following selection of NRCS_SOILS: "FRMLNDCL = 'ALL AREAS ARE PRIME FARMLAND' OR FRMLNDCL = 'PRIME FARMLAND IF DRAINED AND EITHER PROTECTED FROM FLOODING OR NOT FREQUENTLY FLOODED DURING THE GROWING SEASON' OR FRMLNDCL = 'PRIME FARMLAND IF DRAINED' OR FRMLNDCL = 'FARMLAND OF LOCAL IMPORTANCE' OR FRMLNDCL = 'FARMLAND OF UNIQUE IMPORTANCE'" Process Date: 20190228
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:
U.S. Department of Agriculture, Natural Resources Conservation Service
USGS, NRCS, SSURGO
PO Box 141510
Gainesville, FL
32614
352.338.9535

http://websoilsurvey.sc.egov.usda.gov tom.weber@fl.usda.gov

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