Info: Soils

Symbology:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Iowa Cooperative Soil Survey and IDNR Geological Survey

Publication_Date: 09/11/1998

Title:

Digital Soil Map Data of Allamakee, Clayton, and Winneshiek County, Iowa

Edition: 02/09/2001

Geospatial_Data_Presentation_Form: vector digital data

Publication_Information:

Publication_Place: Iowa City, IA

Publisher: IDNR - Iowa Geological Survey

Other_Citation_Details:

Data does not include the Giard Purchase Area of Clayton County.

Online_Linkage: http://www.igsb.uiowa.edu/nrgislibx/

Online_Linkage: ftp://ftp.igsb.uiowa.edu/gis_library/Counties

Description:

Abstract:

This coverage contains polygons representing soil mapping units from the published soil survey report of Allamakee, Clayton, and Winneshiek County.  The soil survey was digitized by the Iowa Cooperative Soil Survey (ICSS), which includes the USDA Natural Resources Conservation Service, the Iowa Department of Agriculture and Land Stewardship, and Iowa State University, Cooperative Extension Service and Iowa Agriculture and Home Economics Experiment Station. The soil mapping units are linked to the Iowa Soil Properties and Interpretations Database (ISPAID).  Minimum size delineation of soil polygons is 2 acres.  This coverage in its present form, including the township edge-matching, final editing and finishing was assembled by the Iowa DNR, Geological Survey.

Purpose:

This digital, geographically referenced data set was developed by the Iowa Department of Natural Resources to carry out agency responsibilities related to management, protection, and development of Iowa's natural resources.

Supplemental_Information:

The township-level data was appended to county-level & projected to UTM Zone 15 NAD83 and converted to ESRI Shapefile format by USDA-NRCS GIS Office, Ames, IA

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1998

Currentness_Reference:

publication date

Status:

Progress: Complete

Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -91.615448

East_Bounding_Coordinate: -90.882511

North_Bounding_Coordinate: 43.086309

South_Bounding_Coordinate: 42.633076

Keywords:

Theme:

Theme_Keyword_Thesaurus: none

Theme_Keyword: Soils

Place:

Place_Keyword: Allamakee, Clayton, and Winneshiek County, Iowa

Access_Constraints: None

Use_Constraints:

None

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: James D. Giglierano

Contact_Organization: Iowa Department of Natural Resources - Iowa Geological Survey

Contact_Address:

Address_Type: mailing and physical address

Address:

109 Trowbridge Hall

City: Iowa City

State_or_Province: IA

Postal_Code: 52242

Contact_Voice_Telephone: 319-335-1575

Contact_Electronic_Mail_Address: jgiglierano@igsb.uiowa.edu

Hours_of_Service: 8:00 AM - 4:30 PM CST

Native_Data_Set_Environment:

Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 4; ESRI ArcCatalog 8.3.0.800

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Data_Quality_Information:

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

The spatial accuracy of this coverage is not known, but has been estimated based on several known factors and some assumptions about its processing history. The actual on ground transition between map units is variable: on long gently sloping landscapes the transition may occur gradually over 18 meters (50 feet) or more; on steep slopes it may change sharply, 2 meters (5 feet) or less. Based on a maximum local relief per section in Clayton County of around 135 meters, the terrain distortions caused by using non-orthorectified aerial imagery can contribute up to 100 meters of displacement. Georeferencing and transformation to the UTM coordinate system is accurate to 22 meters. Using a root mean squared (RMS) error calculation, the worse case positional accuracy of this coverage is estimated to be around 104 meters ((18**2 + 100**2 + 22**2)**1/2). Displacement of soil polygons is evident in drainage ways of sections with steep, variable relief. Users should be aware of these accuracy issues particularly when overlaying soils data with higher quality data.

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: USDA Soil Conservation Service

Publication_Date: 1982

Title:

Soil Survey of Clayton County, Iowa

Source_Scale_Denominator: 15,840

Type_of_Source_Media: Mylar copies of individual soil survey map sheets

Source_Citation_Abbreviation:

Soil Survey of Clayton County, Iowa

Process_Step:

Process_Description:

- 1:15,840 scale mylar map sheets scanned with Optronics camera at 200 DPI (ground resolution 2 meters).  Map sheets were originally drawn on black and white rectified aerial photos.  These aerial photos were not ortho rectified and thus soil lines contain terrain distortions inherited from the imagery. 

- edited with MES (Map Editing Software - Univ. of Minnesota), completed  2/28/91

- soil polygons were clipped to individual sections having a raster resolution of 320 x 200 pixels (typical ground resolution 5 x 8 meters)

- raster to vector conversion (ISOIL format)

- conversion to Arc/Info format

- soil data transformed to UTM coordinate system using registration tic files from Iowa DNR NRGIS county public land survey system (PLSS) files.  PLSS coverages were digitized from 24k USGS topo maps and have 22 meter RMS accuracy.

- individual sections of soil polygon data were joined into townships using Arc macro language scripts (soilprog2.aml and soilmatch.aml).  Section boundaries of soil polygons were snapped (30 meter search tolerance) to IDNR PLSS coverages using Arc/Info ADJUST command.  Outer 50 meters of soil coverage warped to fit section lines.  Macro developed by Calvin Wolter and Jim Giglierano, Iowa DNR.  Processed by GIS Support and Research Lab, Iowa State University.

- sliver polygons eliminated and lines between sections dissolved.

- linked ISPAID soil properties file to polygon attribute table by a join on map unit name

Process_Step:

Process_Description:

Metadata imported.

Source_Used_Citation_Abbreviation:

X:\Data_NAD83\Counties\Clay\SOIL_21\soils_21.shp.xml

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Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Vector

Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: G-polygon

Point_and_Vector_Object_Count: 30989

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Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Grid_Coordinate_System:

Grid_Coordinate_System_Name: Universal Transverse Mercator

Universal_Transverse_Mercator:

UTM_Zone_Number: 15

Transverse_Mercator:

Scale_Factor_at_Central_Meridian: 0.999600

Longitude_of_Central_Meridian: -93.000000

Latitude_of_Projection_Origin: 0.000000

False_Easting: 500000.000000

False_Northing: 0.000000

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair

Coordinate_Representation:

Abscissa_Resolution: 0.000128

Ordinate_Resolution: 0.000128

Planar_Distance_Units: meters

Geodetic_Model:

Horizontal_Datum_Name: North American Datum of 1983

Ellipsoid_Name: Geodetic Reference System 80

Semi-major_Axis: 6378137.000000

Denominator_of_Flattening_Ratio: 298.257222

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Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: soils_22

Attribute:

Attribute_Label: FID

Attribute_Definition:

Internal feature number.

Attribute_Definition_Source:

ESRI

Attribute_Domain_Values:

Unrepresentable_Domain:

Sequential unique whole numbers that are automatically generated.

Attribute:

Attribute_Label: Shape

Attribute_Definition:

Feature geometry.

Attribute_Definition_Source:

ESRI

Attribute_Domain_Values:

Unrepresentable_Domain:

Coordinates defining the features.

Attribute:

Attribute_Label: AREA

Attribute:

Attribute_Label: PERIMETER

Attribute:

Attribute_Label: SOILS_22_

Attribute:

Attribute_Label: SOILS_22_I

Attribute:

Attribute_Label: MUSYM

Attribute:

Attribute_Label: SMU

Attribute:

Attribute_Label: SCSSOIL5

Attribute:

Attribute_Label: SOILNAME

Attribute:

Attribute_Label: LCC

Attribute:

Attribute_Label: PRIMELND

Attribute:

Attribute_Label: LEAGFMLND

Attribute:

Attribute_Label: CSR

Attribute:

Attribute_Label: CORNYLD

Attribute:

Attribute_Label: SOYBNYLD

Attribute:

Attribute_Label: OATYLD

Attribute:

Attribute_Label: WHEATYLD

Attribute:

Attribute_Label: ALFBRMYLD

Attribute:

Attribute_Label: TIGRSYLD

Attribute:

Attribute_Label: KYBGYLD

Attribute:

Attribute_Label: MSA

Attribute:

Attribute_Label: MLRA

Attribute:

Attribute_Label: ADDMLRA

Attribute:

Attribute_Label: ACREAGE

Attribute:

Attribute_Label: DSMACRES

Attribute:

Attribute_Label: SLOPERNGL

Attribute:

Attribute_Label: SLOPERNGH

Attribute:

Attribute_Label: SLOPE_RANG

Attribute:

Attribute_Label: ORDER

Attribute:

Attribute_Label: SUBORDER

Attribute:

Attribute_Label: GREATGROUP

Attribute:

Attribute_Label: SUBGROUP

Attribute:

Attribute_Label: FAMILY

Attribute:

Attribute_Label: SMUKIND

Attribute:

Attribute_Label: COMPKIND

Attribute:

Attribute_Label: HYDROGRP

Attribute:

Attribute_Label: HYDSOILCD

Attribute:

Attribute_Label: FLOODFRQ

Attribute:

Attribute_Label: FLOODFRQCD

Attribute:

Attribute_Label: AVWATCAPL

Attribute:

Attribute_Label: AVWATCAPH

Attribute:

Attribute_Label: AVWATCAPAV

Attribute:

Attribute_Label: SURBDL

Attribute:

Attribute_Label: SURBDH

Attribute:

Attribute_Label: SURBDMID

Attribute:

Attribute_Label: SUBSLBDL

Attribute:

Attribute_Label: SUBSLBDH

Attribute:

Attribute_Label: SBSLBDMID

Attribute:

Attribute_Label: SUBSOILP

Attribute:

Attribute_Label: SUBSOILK

Attribute:

Attribute_Label: SUBSOILGRP

Attribute:

Attribute_Label: NATIVEVEG

Attribute:

Attribute_Label: PARENTMAT

Attribute:

Attribute_Label: LNDSCPPOS

Attribute:

Attribute_Label: DEPTHCNTRS

Attribute:

Attribute_Label: DEPTHCNTRD

Attribute:

Attribute_Label: DEPTHCNTRM

Attribute:

Attribute_Label: TXCMPD060S

Attribute:

Attribute_Label: TXCMPD060D

Attribute:

Attribute_Label: TXCMPD060M

Attribute:

Attribute_Label: TXCMP060CD

Attribute:

Attribute_Label: TXCMPD080S

Attribute:

Attribute_Label: TXCMPD080D

Attribute:

Attribute_Label: TXCMPD080M

Attribute:

Attribute_Label: TXCMP080CD

Attribute:

Attribute_Label: DPTHHIWTRS

Attribute:

Attribute_Label: DPTHHIWTRD

Attribute:

Attribute_Label: DPTHHIWTRR

Attribute:

Attribute_Label: PERM

Attribute:

Attribute_Label: PERMCODE

Attribute:

Attribute_Label: DRNCLASS

Attribute:

Attribute_Label: DRNCLSCD

Attribute:

Attribute_Label: TEXTSURHOR

Attribute:

Attribute_Label: EROSIONC

Attribute:

Attribute_Label: OMM

Attribute:

Attribute_Label: OMR

Attribute:

Attribute_Label: OMRL

Attribute:

Attribute_Label: OMRH

Attribute:

Attribute_Label: PHSURL

Attribute:

Attribute_Label: PHSURH

Attribute:

Attribute_Label: PHSURMID

Attribute:

Attribute_Label: CECL

Attribute:

Attribute_Label: CECH

Attribute:

Attribute_Label: CECMID

Attribute:

Attribute_Label: KFACTOR

Attribute:

Attribute_Label: KFFACTOR

Attribute:

Attribute_Label: TFACTOR

Attribute:

Attribute_Label: WINDERGRP

Attribute:

Attribute_Label: CLAYSURL

Attribute:

Attribute_Label: CLAYSURH

Attribute:

Attribute_Label: CLAYSURMID

Attribute:

Attribute_Label: SANDCONTSL

Attribute:

Attribute_Label: SANDCONTSH

Attribute:

Attribute_Label: SANDCONTSM

Attribute:

Attribute_Label: SANDSIZESH

Attribute:

Attribute_Label: TOPSOILMP

Attribute:

Attribute_Label: TOPSOILRNG

Attribute:

Attribute_Label: SURCOLVL

Attribute:

Attribute_Label: SURCOLCHR

Attribute:

Attribute_Label: MOLCOLMD

Attribute:

Attribute_Label: MOLCOLRNG

Attribute:

Attribute_Label: DPTFREECAR

Attribute:

Attribute_Label: TONSRES

Attribute:

Attribute_Label: TILTHRTG

Attribute:

Attribute_Label: PWRINDX

Attribute:

Attribute_Label: HEL

Attribute:

Attribute_Label: CONO

Attribute:

Attribute_Label: MUID

Attribute:

Attribute_Label: SSMU

Attribute:

Attribute_Label: DRNCL_DESC

Attribute:

Attribute_Label: EROSC_DESC

Attribute:

Attribute_Label: HEL_DESC

Attribute:

Attribute_Label: HYDCD_DESC

Attribute:

Attribute_Label: NVEG_DESC

Attribute:

Attribute_Label: PTMAT_DESC

Attribute:

Attribute_Label: PERM_DESC

Attribute:

Attribute_Label: TXTSH_DESC

Attribute:

Attribute_Label: TXTSH_DESC

Attribute:

Attribute_Label: TXTSH_DESC

Overview_Description:

Entity_and_Attribute_Overview:

AREA: area of the polygon in square meters

   PERIMETER: Length of polygon perimeter in meters

   SOILS_22_I: Internal polygon identifier

   SOILS_22: Sequential polygon identifier

   Musym:   Map Unit Symbol                       

   SMU:     soil map unit                               

   SCSSOIL5:  scs-soils-5 number                          

   SOILNAME:  soil name                                   

   LCC:     land capability class                       

   PRIMELND:  USDA prime farmland                         

   LEAGFMLND:  LEAG farmland units                         

   CSR:       corn suitability rating                     

   CORNYLD:  corn yield                                  

   SOYBNYLD:  soybean yield                               

   OATYLD:   oat yield                                   

   WHEATYLD:  wheat yield                                 

   ALFBRMYLD: alfalfa-bromegrass yield                    

   TIGRSYLD:  tall introduced grasses yield               

   KYBGYLD:   kentucky bluegrass yield                    

   MSA:    major soil area                             

   MLRA:   major land resource area                    

   ADDMLRA:  number of additional MLRAs                  

   ACREAGE:   acreage                                     

   SLOPERNGL: slope range low                             

   SLOPERNGH: slope range high                            

   ORDER:     taxonomic classification - order            

   SUBORDER:  taxonomic classification - suborder         

   GREATGROUP:  taxonomic classification - great group      

   SUBGROUP:  taxonomic classification - subgroup         

   FAMILY:    taxonomic classification - family           

   SMUKIND:   kind of map unit                            

   COMPKIND:  kind of component                           

   HYDROGRP:  hydrological group                          

   HYDSOILCD:  hydric soil code                            

   FLOODFRQ:  flooding frequency                          

   FLOODFRQCD: flooding frequency code                     

   AVWATCAPL: available water capacity (low               

   AVWATCAPH: available water capacity (high              

   SURBDL:    surface bulk density low                    

   SURBDH:    surface bulk density high                   

   SUBSLBDL:  subsoil bulk density low                    

   SUBSLBDH:  subsoil bulk density high                  

   SUBSOILP:  subsoil P                                   

   SUBSOILK: subsoil K                                   

   SUBSOILGRP:  subsoil group                               

   NATIVEVEG:  native vegetation                           

   PARENTMAT:  parent material                             

   LNDSCPPOS:  landscape position                          

   DEPTHCNTRL: depth to constrasting particle-size low     

   DEPTHCNTRH: depth to constrasting particle-size high    

   TXCMPD060L: Dep Textural or Comp discontinuity  0-60 low

   TXCMPD060H: Dep Textural or Comp discontinuity  0-60 high

   TXCMP060CD:Textural or comp. discontinuity code        

   TXCMPD080L: Dep Textural or Comp discontinuity  0-80 low

   TXCMPD080H: Dep Textural or Comp discontinuity  0-80 high

   TXCMP080CD:Dep Textural or Comp discontinuity  code    

   DPTHHIWTRL: depth to high water table low               

   DPTHHIWTRH:  depth to high water table high              

   PERM:   permeability                                

   PERMCODE:  permeability code                           

   DRNCLASS:  drainage class (natural)                    

   DRNCLSCD:  drainage class code (natural)               

   TEXTSURHOR: texture (surface horizon)                   

   EROSIONC:  erosion class                               

   OMM:  organic matter midpoint (%)                 

   OMR:  organic matter range (+-) (%)               

   OMRL:  Organic matter range low                    

   OMRH:    Organic matter range high                   

   PHSURL:   pH (surface horizon) low                    

   PHSURH:  pH (surface horizon) high                   

   CECL:  CEC range low                               

   CECH:   CEC range high                              

   KFACTOR:  K factor                                    

   KFFACTOR:                                              

   TFACTOR:   T factor                                    

   WINDERGRP: wind erodibility group                      

   CLAYSURL:  clay content (surface) low                  

   CLAYSURH:  clay content (surface) high                 

   SANDCONTSL: sand content (surface) low                  

   SANDCONTSH: sand content (surface) high                 

   SANDSIZESH: sand size (surface horizon)                 

   TOPSOILMP: topsoil depth midpoint                      

   TOPSOILRNG: topsoil depth range                         

   SURCOLVL:  surface layer color value                   

   SURCOLCHR: surface layer color chroma                  

   MOLCOLMD:  thickness of mollic colors midpoint         

   MOLCOLRNG: thickness of mollic colors range            

   DPTFREECAR: depth to free carbonates                    

   TONSRES:   tons of residue /acre (T/ac)                

   TILTHRTG:  tilth rating                                

   PWRINDX:   power index                                 

   HEL:       highly erodible land (HEL) code             

   CONO:      county number                               

   MUID:       map unit ID                                           

   SSMU:      soil map unit symbol

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Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: IDNR - Iowa Geological Survey

Contact_Person: Casey J Kohrt

Contact_Address:

Address_Type: mailing and physical address

Address:

109 Trowbridge hall

City: Iowa City

State_or_Province: IA

Postal_Code: 52242

Contact_Voice_Telephone: 319-335-1353

Contact_Electronic_Mail_Address: gis_library@igsb.uiowa.edu

Hours_of_Service: 8:00 AM - 4:30 PM CST

Resource_Description: Downloadable Data

Distribution_Liability:

This digital, geographically referenced data set was developed by the Iowa Department of Natural Resources to  carry out agency responsibilities related to management, protection, and development of Iowa's natural resources.  It resides in the Natural Resources Geographic Information System library. Although efforts have been made to make it useful to the Department, the Department assumes no responsibility for errors in the information.  Similarly the Department assumes no responsibility for the consequences of inappropriate uses or interpretations of the data made by anyone to whom this data has been made available.  The Department bears no responsibility to inform users of any changes made to this data.  Anyone using this data is advised that precision implied by the coverage may far exceed actual precision.  Comments on this data are invited and the Department would appreciate that documented errors be brought to staff attention.  The development of the coverages in the NRGIS Library represents a major investment of staff time and effort.

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Transfer_Size: 68.385

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name: http://www.igsb.uiowa.edu/nrgislibx/

Network_Resource_Name: ftp://ftp.igsb.uiowa.edu/gis_library/Counties

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Metadata_Reference_Information:

Metadata_Date: 20040429

Metadata_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Casey J Kohrt

Contact_Organization: IDNR- Iowa Geological Survey

Contact_Address:

Address_Type: mailing and physical address

Address:

109 Trowbridge Hall

City: Iowa City

State_or_Province: IA

Postal_Code: 52242

Contact_Voice_Telephone: 319-335-1353

Contact_Electronic_Mail_Address: gis_library@igsb.uiowa.edu

Hours_of_Service: 8:00 AM - 4:30 PM CST

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: local time

Metadata_Extensions:

Online_Linkage: http://www.esri.com/metadata/esriprof80.html

Profile_Name: ESRI Metadata Profile

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