FLORIDA GEOGRAPHIC DATA LIBRARY DOCUMENTATION
USDA PRIMARY FARMLAND SOILS
Geodataset Name: PRIMFARM Geodataset Type: Shape Geodataset Feature: Polygon
GENERAL DESCRIPTION:
Soil map units selected from the United States Department of Agriculture (USDA) Natural Resources Conservation Service (NRCS) as the Soil Service Geographic (SSURGO) data set that have been classified by the NRCS as prime farmland.
DATA SOURCE(S): SOUTHWEST FLORIDA WATER
MANAGEMENT DISTRICT
ST. JOHNS WATER MANAGEMENT
DISTRICT
SOUTH FLORIDA WATER MANAGEMENT
DISTRICT
LEON COUNTY GIS
UNITED STATES DEPARTMENT OF
AGRICULTURE - NATURAL RESOURCES
CONSERVATION SERVICE
SCALE OF ORIGINAL SOURCE MAPS: 1:24000
DATE OF AUTOMATION OR SOURCE: Varies by data source, aproximately 1990
GEODATASET EXTENT: Citrus, Hernando, and Pasco Counties
(No Prime Farmlands classified in Collier, Lee,
Lake, Martin, Hillsborough, or Pinellas)
FEATURE ATTRIBUTE TABLES
ITEM NAME WIDTH TYPE PRECISION SOURCE TABLE
MUID 6 DECIMAL 0 MAPUNIT.DBF
MUSYM 2 DECIMAL - MAPUNIT.DBF
MUNAME 58 CHARACTER - MAPUNIT.DBF
MUKIND 1 CHARACTER - MAPUNIT.DBF
MLRA 4 CHARACTER - MAPUNIT.DBF
PRIMFML 1 DECIMAL - MAPUNIT.DBF
MUACRES 5 DECIMAL - MAPUNIT.DBF
COMPPCT 3 DECIMAL - COMP.DBF
SURFTEX 6 CHARACTER - COMP.DBF
ANFLOOD 5 CHARACTER - COMP.DBF
ROCKDEPL 2 DECIMAL - COMP.DBF
ROCKDEPH 2 DECIMAL - COMP.DBF
ROCKHARD 4 CHARACTER - COMP.DBF
HYDGRP 3 CHARACTER - COMP.DBF
DRAINAGE 5 CHARACTER - COMP.DBF
HYDRIC 1 CHARACTER - COMP.DBF
CORCON 8 CHARACTER - COMP.DBF
CORSTEEL 8 CHARACTER - COMP.DBF
CLNIRR 1 DECIMAL - COMP.DBF
ATTRIBUTE FEATURE TABLES CODES AND VALUES
Item name Long name Description
anflood Annual Flooding Descriptive term used to
Frequency describe the frequency of
annual flooding (flooding
likely to occur during
the year) that is likely to
occur.
*Frequent (FREQ) - 50%
chance of flooding;
*Occasional (OCCAS) - 5 to
50% chance of flooding;
*Rare (RARE) - 0 to 5% chance
of flooding.
clnirr Nonirrigated A rating of the primary soil for
Capability Class nonirrigated agricultural use.
The number indicates
progressively greater
limitations and narrower
choices for use.
comppct Component Percent The percentage of the primary
component of the map unit.
corcon Corrosion - An interpretation rating of
Concrete the susceptibility of concrete
to corrosion when in contact
with the primary soil.
corsteel Corrosion - An interpretation rating of
Uncoated Steel the susceptibility of uncoated
steel to corrosion when in
contact with the primary soil.
drainage Soil Drainage Code identifying the natural
Class drainage condition of the primary soil
Component and refers to the frequency
and duration of periods when
the soil is free of
saturation.
Example: Well Drained (W);
Excessive (E); Moderately Well
(MW); Poorly (P); Somewhat
Excessively (SE); Somewhat
Poorly (SP).
hydgrp Hydrologic Group The hydrologic group for the primary
soil.
A = High infiltration rates. Soils are deep,
well drained to excessively drained sands and gravels.
A/D = Drained/undrained hydrology class of
soils that can be drained and are classified.
B = Moderate infiltration rates. Deep and
moderately deep, moderately well and well drained
soils that have moderately coarse textures.
B/D = Drained/undrained hydrology class of
soils that can be drained and are classified.
C = Slow infiltration rates. Soils with layers
impeding downward movement of water, or soils that
have moderately fine or fine textures.
C/D = Drained/undrained hydrology class of
soils that can be drained and classified.
D = Very slow infiltration rates. Soils are clayey,
have a high water table, or are shallow to an
impervious layer.
hydric Hydric Soil The symbol (Y/N) identifying
Rating inclusion hydric soils in the
primary component.
N = No, Soil does not meet the requirements for a hydric soil.
U = Unranked, Soil has not been ranked with hydric criteria.
Y = Yes, Soil meets the requirements for a hydric soil.
mlra Major Land The code used to identify the
Resource Area dominant Major Land Resource
Area (MLRA) within which the
soil map unit is mapped.
150A = Gulf Coast Prairies
150B = Gulf Coast Saline Prairies
151 = Gulf Coast Marsh
152A = Eastern Gulf Coast Flatwoods
152B = Western Gulf Coast Flatwoods
153A = Atlantic Coast Flatwoods
153B = Tidewater Area
153C = Mid-Atlantic Coastal Plain
154 = South-Central Florida Ridge
155 = Southern Florida Flatwoods
156A = Florida Everglades and
Associated Areas
muacres Mapunit Acres The acreage of the soil map
unit in the soil survey area.
muid Identification A symbol created by
Symbol concatenation of the survey area symbol(ssaid)
and mapunit symbol(musym). It
uniquely identifies a mapunit
within a state. For example,
ssaid 061 and musym 1 is
stored as muid 061001. The
muid is used as a key
for linking information in the
MUIR tables.
mukind Mapunit Kind Code identifying the kind of
map unit:
A = Association, Two or more soils with a repeating
pattern.
C = Consociation, Seventy-five percent (75%) of map unit
within range of taxon.
U = Undifferentiated Group, Two or more soils that are not continuously
coterminous.
X = Complex, Two or more soils that cannot be mapped
separately caused by map scale limitations.
muname Mapunit Name Correlated name of the map
unit (recommended name or
field name for surveys in
progress).
musym Mapunit Symbol The symbol used to identify
the soil map unit on the soil
map.
primfml Prime Farmland The prime farmland
Classification classification of the map
unit. State codes have
been developed for some
states.
0 = Not prime farmland.
1 = All areas are prime farmland.
2 = Only drained areas are prime farmland.
3 = Only areas protected from flooding or not
frequently flooded during the growing
season are prime farmland.
4 = Only irrigated areas are prime farmland.
5 = Only drained areas that are either
protected from flooding or not frequently
flooded during the growing season
prime farmland.
6 = Only irrigated areas that have been
drained are prime farmland.
7 = Only irrigated areas that are either
protected from flooding or not frequently
flooded during the growing season are
prime farmland.
8 = When subsoiled (completely remove root
inhibiting soil inhibiting soil layer) are prime farmland.
9 = Only irrigated area that the product of I
(soil erodibility) and C (climate factor)
does not exceed 60 are prime farmland.
rockdeph Depth to Bedrock The maximum value for the
range in depth to bedrock,
expressed in inches.
rockdepl Depth to Bedrock The minimum value for the
range in depth to bedrock,
expressed in inches.
rockhard Bedrock Hardness The degree of hardness of the
underlying rock. Rated as:
HARD - Excavation requires
blasting or special equipment
or SOFT - Excavation can be
made with trenching machines,
backhoes, or small rippers.
surftex Surface Soil Code for the USDA texture for
Texture the surface layer or horizon.
Example: Loam (L); Sandy loam
SL). Also includes terms
used to modify texture and
terms used in lieu of
texture.
USER NOTES:
The data are designed to provided a guidance for the use of soils at the county level. The data contain 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 SSOILS data base provides the most detailed level of information and was designed primarily for farm and ranch, landowner/user, township, county, or parish natural resource planning and management. Using the soil attributes, this data base serves as an excellent source for determining erodible areas and developing erosion control practices; reviewing site development proposals and land use potential; making land use assessments and chemical fate assessments; and identifying potential wetlands and sand and gravel aquifer areas.
Additional information about the soils are available through the FGDL; these tables include:
*comp (map unit component) - stores soil component
information
*compyld (component crop yield) - stores crop yield information
for soil components
*forest (forest understory) - stores information for plant
cover as forest understory
for soil components
*interp (interpretation) - stores soil interpretation
ratings (both limitation
ratings and suitability
ratings) for soil components
*layer (soil layer) - stores characteristics of soil
layers for soil components
*mapunit (map unit) - stores information that
applies to all components of a
soil map unit
*windbrk (windbreak) - stores information on
recommended windbreak
plants for soil components
*wlhabit (wildlife habitat) - stores wildlife habitat
information for soil
components
*woodland(woodland) - stores information on common
indicator trees for soil
components
*woodmgt (woodland management) - stores woodland management
information for soil
components
The spatial data base will be updated when the information becomes available.
The following ssoils attribute data files are incomplete.
compyd.dbf - MONROE
woodld.dbf - MONROE
woodmg.dbf - MONROE
windbk.dbf - MONROE
These tables were not developed for this county by the NRCS.
FGDL QUALITY ASSURANCE STATUS:
-Reprojected data to FGDL Albers
-Set Precision to DOUBLE
-Set Tolerances to FGDL Standards
REFERENCES:
USDA-NRCS. 1995. Soil Survey Geographic (SSURGO) Database. USDA-NRCS, NSSC. Miscellaneous Publication Number 1527.
This publication is available from:
National Cartography and GIS Center
USDA Natural Resources
Conservation Service
P.O. Box 6567
Fort Worth, TX 76115-0567
This publication can also be found in the file ssurgo.txt on the CDROM.
DATA LINEAGE SUMMARY:
Using NCSS mapping standards, soil maps in the SSOILS data base are made using field methods. Surveyors observe soils along delineation boundaries and determine map unit composition by field traverses and transects. Aerial photographs are interpreted and used as the field map base. Maps are made at scales ranging from 1:12,000 to 1:63,360. Typically scales are 1:15,840, 1:20,000, or 1:24,000. The maps, along with comprehensive descriptions, produce an attribute and spatial data base for NCSS publications.
ETDM Processing - Joined attributes from the mapunit.dbf table. From the comp.dbf file, selected descriptive information about about the primary soil making up each map unit. Joined this selected set of the comp.dbf to the attribute table. Deleted records with no data (typically enclosed water bodies that were not sampled for soil composition) from the data set. Extracted polygons where primfml > 0.
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 SOURCE CONTACT(S):
Name: SOUTHWEST FLORIDA WATER MANAGEMENT DISTRICT
Abbr. Name: SWFWMD
Address: South West Florida Water Management District
2379 Broad St.
Brooksville, FL 34609-6899
Phone: (352) 796-7211
Fax: N/A
Web site: http://www.swfwmd.state.fl.us/
Ftp site: N/A
Contact Person: GIS Data Administrator
Phone: (352) 796-7211
E-mail: N/A
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
Name: SOUTH FLORIDA WATER MANAGEMENT DISTRICT
Abbr. Name: SFWMD
Address: South Florida Water Management District
P.O. Box 24680
301 Gun Club Rd
West Palm Beach, FL 33416-4680
Web site: http://www.sfwmd.gov/
Phone: 1-800-662-turn or (561) 686-8800
Contact Person: GIS Data Administrator
Phone: (561) 687- 6718
Name: LEON COUNTY GIS, GIS CENTRAL
Address: 301 S. Monroe St.
Tallahassee, Fl 32301
Phone: (850) 488-8020
Fax: (850) 922-0099
Web site: http://www.co.leon.fl.us
Contact Person:
Phone: (850) 413-0149
Name: UNITED STATES DEPARTMENT OF AGRICULTURE (USDA) -
NATURAL RESOURCES CONSERVATION SERVICE (NRCS)
(Florida State Office)
Address: P.O. Box 141510
Gainesville, FL 32614-1510
Phone: (352) 338-9533
Fax: (352) 338-9578
Ftp site: http://www.nrcs.usda.gov/
Contact Person:
Phone: (352) 338-9538
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