FLORIDA GEOGRAPHIC DATA LIBRARY DOCUMENTATION
HYDRIC SOILS
Geodataset Name: Hydric 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 where the primary soil component of the map unit meets the NRCS requirements for a hydric soil.
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, Collier, Hernando, Hillsborough,
Lee, Martin, Pasco, and Pinellas.
NOTE: Soils in Lake county have not been ranked.
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
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
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 describe the frequency of annual flooding
Frequency (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 nonirrigated agricultural use.
Capability Class The number indicates progressively greater limitations and narrower
choices for use.
Example:
cl 1 (Capability Class I)
Soils in Class I have few limitations that restrict their use.
cl 2 (Capability Class II)
Soils in Class II have some limitations that reduce the choice
of plants or require moderate conservation practices.
cl 3 (Capability Class III)
Soils in Class III have severe limitations that reduce the choice
of plants or require special conservation practices, or both.
cl 4 (Capability Class IV)
Soils in Class IV have very severe limitations that restrict the
choice of plants, require very careful management, or both.
cl 5 (CapabilityClass V)
Soils in Class V have little or no erosion hazard but have other
limitations impractical remove that limit their use.
cl 6 (CapabilityClass VI)
Soils in Class VI have severe limitations that make them generally
unsuited to cultivation and limit their use largely to pasture, etc.
cl 7 (CapabilityClass VII)
Soils in Class VII have very severe limitations that make them
unsuited to cultivation and that restrict their use to grazing, etc.
cl 8 (CapabilityClass VIII)
Soils (and landforms) in Class VIII have limitations that preclude
their use for commercial plant production and restrict their use.
comppct Component Percent The percentage of the primary component of the map unit.
corcon Corrosion - An interpretation rating of the susceptibility of concrete
Concrete to corrosion when in contact with the primary soil.
corsteel Corrosion - An interpretation rating of the susceptibility of uncoated
Uncoated Steel steel to corrosion when in contact with the primary soil.
drainage Soil Drainage Code identifying the natural drainage condition of the primary soil
Class Component and refers to the frequency and duration of periods when
the soil is free of saturation.
Example:
E (Excessively)
Soils have very high and high hydraulic conductivity and
low water holding capacity. Depth to water table is more than 6 feet.
SE (Somewhat Excessively)
Soils have high hydraulic conductivity and low water holding
capacity. Depth to water table is more than 6 feet.
W (Well)
Soils have intermediate water holding capacity.
Depth to water table is more than 6 feet.
MW (Moderately Well)
Soils have a layer of low hydraulic conductivity, wet state
high in the profile. Depth to water table is 3 to 6 feet.
SP (Somewhat Poorly)
Soils commonly have a layer with low hydraulic conductivity,
wet state high in profile, etc. Depth to water table is 1 to 3 feet.
P (Poorly)
Soils may have a saturated zone, a layer of low hydraulic
conductivity, or seepage. Depth to water table is less than 1 foot.
VP (Very Poorly)
Soils are wet to the surface most of the time. Depth to water
table is less than 1 foot, or is ponded.
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.
mlra Major Land The code used to identify the dominant Major Land Resource
Resource Area Area (MLRA) within which the soil map unit is mapped.
Example:
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 concatenation of the survey area symbol(ssaid)
Symbol 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:
Example:
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.
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 the surface layer or horizon.
Texture Also includes terms used to modify texture and terms used in lieu of texture.
Example:
C - clay
CL - clay loam
FS - fine sand
FSL - fine sandy loam
GR - gravelly
HM - hemic material
L - loam
LFS - loamy fine sand
LS - loamy sand
MARL - marl
MK - mucky
MPT - mucky-peat
MUCK - muck
S - sand
SCL - sandy clay loam
SIC - silty clay
SICL - silty clay loam
SIL - silt loam
SL - sandy loam
UWB - unweathered bedrock
VAR - variable
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 mapunits where hydric = Y.
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 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