Common Land Unit for Trempealeau, WisconsinMetadata also available as
Metadata:
- 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: USDA-FSA Aerial Photography Field Office
- Publication_Date: 20080422
- Title: Common Land Unit for Trempealeau, Wisconsin
- Edition: 20080422
- Geospatial_Data_Presentation_Form: vector digital data
- Series_Information:
- Series_Name: Common Land Units
- Issue_Identification: 20080422
- Publication_Information:
- Publication_Place: USDA-FSA Aerial Photography Field Office
- Publisher: USDA-FSA Aerial Photography Field Office
- Online_Linkage: none
- Description:
- Abstract:
- The common land unit (CLU) dataset consists of digitized farm tract and field boundaries and associated attribute data. The USDA Farm Service Agency (FSA) defines farm fields as agricultural land that is delineated by natural and man-made boundaries such as road ways, tree lines, waterways, fence lines, etc. Field boundaries are visible features that can be identified and delineated on aerial photography and digital imagery. Farm tracts are defined by FSA as sets of contiguous fields under single ownership. Common land units are used to administer USDA farm commodity support and conservation programs in a GIS environment.
The CLU data set was prepared by digitizing farm tracts and fields using 1:7920 scale rectified photomaps that have been maintained by FSA in USDA Field Service Centers. Using the photomaps as reference tract and field boundaries were digitized on-screen with digital orthophotography using ESRIs (Environmental Systems Research Institute) ArcView GIS Product. Each of the boundaries of the CLU are digitized to a tolerance of 3 meters (approximately 10 feet) from ground features visible on the digital orthophotograph.
The base ortho imagery was produced by mosaicking digital orthophoto quarter quads (DOQs) into a seamless county image. The CLU were digitized from an image base of digital ortho quadrangles mosaiked together creating a seamless image base. The moasaicking process eliminates or minimizes any offset that would normally be present between standard USGS quarter quadrangles. CLU datasets are projected in the UTM coordinate system, NAD 83. In counties that are split by two UTM zones, the CLU will be projected in the single, predominant zone. - Purpose:
- This CLU data will aid County Field Service Centers in identifying and delineating farm tracts and field boundaries as they administer USDA programs for their customers. Better providing more accurate time-saving acreage, field and tract information to their customers.
- Time_Period_of_Content:
- Time_Period_Information:
- Single_Date/Time:
- Calendar_Date: 20080422
- Currentness_Reference: Inspection Status of Common Land Unit
- Status:
- Progress: Complete
- Maintenance_and_Update_Frequency: On-going, regular updates.
- Spatial_Domain:
- Bounding_Coordinates:
- West_Bounding_Coordinate: -91.6130
- East_Bounding_Coordinate: -91.1518
- North_Bounding_Coordinate: 44.5970
- South_Bounding_Coordinate: 43.9841
- Keywords:
- Theme:
- Theme_Keyword_Thesaurus: None
- Theme_Keyword: Aerial photograph
- Theme_Keyword: Aerial photo
- Theme_Keyword: rectified
- Theme_Keyword: photo maps
- Theme_Keyword: CLU
- Theme_Keyword: Common Land Unit
- Theme_Keyword: Field Boundaries
- Theme_Keyword: Farm Tracts
- Theme_Keyword: Digitizing
- Theme_Keyword: Farming
- Theme_Keyword: APFO
- Theme_Keyword: USDA
- Theme_Keyword: USA
- Theme_Keyword: FSA
- Theme_Keyword: USDA-FSA-APFO Aerial Photography Field Office
- Theme_Keyword: United States Department of Agriculture (USDA)
- Place:
- Place_Keyword_Thesaurus: None
- Place_Keyword: Trempealeau
- Place_Keyword: Wisconsin
- Place_Keyword: 55121
- Place_Keyword: WI
- Place_Keyword: TREMPEALEAU CO WI FSA
- Access_Constraints:
- Access to this digital data set is currently limited to FSA and Agency partnerships.
- Use_Constraints:
- If digitizing, use a scale of 1:4800 or 1 inch equals 300 feet. This will maintain proper digitizing accuracy.
- Point_of_Contact:
- Contact_Information:
- Contact_Organization_Primary:
- Contact_Organization: USDA-FSA Aerial Photography Field Office
- Contact_Address:
- Address_Type: mailing and physical
- Address: 2222 West 2300 South
- City: Salt Lake City
- State_or_Province: Utah
- Postal_Code: 84119-2020
- Contact_Voice_Telephone: 801-975-3503
- Contact_Facsimile_Telephone: 801-975-3532
- Contact_Electronic_Mail_Address: sales@apfo.usda.gov
- Native_Data_Set_Environment: ESRI GIS Software
- Cross_Reference:
- Citation_Information:
- Originator: USDA Farm Service Agency Digitizing Centers
- Publication_Date: 20080422
- Title: Common Land Unit
- Geospatial_Data_Presentation_Form: Vector Digital Data
- Publication_Information:
- Publication_Place: Trempealeau, Wisconsin TREMPEALEAU CO WI FSA
- Publisher: Trempealeau, Wisconsin TREMPEALEAU CO WI FSA
- Data_Quality_Information:
- Attribute_Accuracy:
- Attribute_Accuracy_Report:
- A sampling of field boundaries were checked to insured the boundary lines fell within the 3 meter (9.8 foot) criteria. Polygon attributes cannot be checked for accuracy due to the absence of the original photomaps with original boundary and attribute information.
All attribute data was collected and transferred from the aerial photographs, that are maintained by the county FSA office to the computerized attribute table. Certain attributes were verified using quality control procedures. The CLU layer is searched for duplicate clu numbers, duplicate tract numbers, and acreage differences between system calculated acrage and official FSA acreage.
- Logical_Consistency_Report:
- Polygon and chain-node topology present, no additional checks for topological consistency were performed on this data set. Attribution of the digital data set includes polygon areas that define agricultural and non-agricultural lands.
- Completeness_Report:
- This digital CLU data set is complete with no required elements left undigitized, as depicted on the reference material.
- Positional_Accuracy:
- Horizontal_Positional_Accuracy:
- Horizontal_Positional_Accuracy_Report:
- All features digitized shall be within 3 meters of their locations as depicted on a display of the digital orthi-imagery. Positional accuracy standard is applicable only to delineated tract and field boundaries that follow visible features.
- Lineage:
- Source_Information:
- Source_Citation:
- Citation_Information:
- Originator: USDA-FSA Aerial Photography Field Office
- Publication_Date: 20080422
- Title: Common Land Unit
- Geospatial_Data_Presentation_Form: Vector Digital Data
- Series_Information:
- Series_Name: Common Land Units
- Issue_Identification: 20080422
- Publication_Information:
- Publication_Place: Trempealeau, Wisconsin TREMPEALEAU CO WI FSA
- Publisher: Trempealeau, Wisconsin TREMPEALEAU CO WI FSA
- Source_Scale_Denominator: 7920
- Type_of_Source_Media: 24x24 inch rectified aerial photographs
- Source_Time_Period_of_Content:
- Time_Period_Information:
- Single_Date/Time:
- Calendar_Date: 1992
- Source_Currentness_Reference: Majority Year of rectified aerial photographs
- Source_Citation_Abbreviation: NAPP
- Source_Contribution:
- County Photomaps (rectified black and white aerial photograph enlargements) measure 24 inch by 24 inch and are produced on sturdy photographic paper with labeled tract and field boundaries delineated with colored ink.
- Process_Step:
- Process_Description:
- The process to digitize the CLU is quite uniform. The photomaps are sent to the digitizing center and then the photomaps are organized into a linear order. A user will then take the photomap and match up the orthophotographic mosaic with the photomap and digitize the tract and field boundaries. When the digitization is complete, the following field attributes are updated with the proper attributes data. STATECD - State Code COUNTYCD - County Code FARMNBR - Farm Number TRACTNBR - Tract Number CLUNBR - Common Land Unit Number CALCACRES - CLU Calculated Acreage HELTYPECD - High Erodable Land Type Code CLUCLSCD - CLU Classification Code FSA_ACRES - FSA Official Acres CLUID - Common Land Unit Identifier
The naming convention of the CLU shapefile according to the "Manual for Managing Geospatial Datasets In Service Centers" Version 3.0 June 2002 is as follows:
clu_a_<stnnn> (with Extensions; .shp, .shx, .dbf, .prj)
.shp - the file that stores the feature geometry. .shx - the file that stores the index of the feature geometry. .dbf - the dBASE file that stores the attribute information of features. When a shapefile is added as a theme to a view, this file is displayed as a feature table. .prj - the file that stores the projection information.
clu - Theme Name ( Common Land Unit ) a - Feature Type ( Area ) st - State Code ( two-letter US Postal Office abbreviations ). nnn - County Codes ( three-digit FIPS number ).
Example: Common Land Units of Boone County, Iowa. clu_a_ia015.shp, clu_a_ia015.shx, clu_a_ia015.dbf, clu_a_ia015.dbf When the CLU have been digitized in the digitizing center, the file is then electronically sent to the Aerial Photography Field Office in Salt Lake City, Utah via File Transfer Protocol (FTP). When the Aerial Photography Field Office receives this file it is loaded into ArcView and inspected. When the Aerial Photography Field Office is finished inspection the CLU layer the shapefiles are saved for future reference. - Source_Used_Citation_Abbreviation: NAPP
- Process_Date: 20080422
- Spatial_Data_Organization_Information:
- Indirect_Spatial_Reference:
- U.S. Department of Commerce, 1987, Codes for the Identification of the States, the District of Columbia and the Outlying areas of the United States, and Associated Areas (FIPS 5-2): Washington, D.C., National Institute of Standards and Technology.
- 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: 42102
- Spatial_Reference_Information:
- Horizontal_Coordinate_System_Definition:
- Planar:
- Map_Projection:
- Map_Projection_Name: Transverse Mercator
- Transverse_Mercator:
- Scale_Factor_at_Central_Meridian:1.000036
- Longitude_of_Central_Meridian: -91.366667
- Latitude_of_Projection_Origin: 43.161111
- False_Easting: 843000.000000
- False_Northing: 0.013000
- Planar_Coordinate_Information:
- Planar_Coordinate_Encoding_Method: coordinate pair
- Coordinate_Representation:
- Abscissa_Resolution: 0.000064
- Ordinate_Resolution: 0.000064
- 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
- Vertical_Coordinate_System_Definition:
- Altitude_System_Definition:
- Altitude_Resolution: 1.000000
- Altitude_Encoding_Method:
- Explicit elevation coordinate included with horizontal coordinates
- Entity_and_Attribute_Information:
- Detailed_Description:
- Entity_Type:
- Entity_Type_Label: dBase
- Entity_Type_Definition:
- The dBASE file that stores the attribute information of features. When a shapefile is added as a theme to a view, this file is displayed as a feature table.
- Entity_Type_Definition_Source: ESRI OnLine Help
- Attribute:
- Attribute_Label: OBJECTID
- 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: COMMENTS
- Attribute:
- Attribute_Label: STATECD
- Attribute:
- Attribute_Label: COUNTYCD
- Attribute:
- Attribute_Label: TRACTNBR
- Attribute:
- Attribute_Label: FARMNBR
- Attribute_Definition: Feature geometry.
- Attribute_Definition_Source: ESRI
- Attribute_Domain_Values:
- Unrepresentable_Domain: Coordinates defining the features.
- Attribute:
- Attribute_Label: CLUNBR
- Attribute:
- Attribute_Label: CALCACRES
- Attribute_Definition: Feature geometry.
- Attribute_Definition_Source: ESRI
- Attribute_Domain_Values:
- Unrepresentable_Domain: Coordinates defining the features.
- Attribute:
- Attribute_Label: FSA_ACRES
- Attribute:
- Attribute_Label: HELTYPECD
- Attribute:
- Attribute_Label: CLUCLSCD
- Attribute:
- Attribute_Label: CLUID
- Attribute:
- Attribute_Label: ADMNSTATE
- Attribute:
- Attribute_Label: ADMNCOUNTY
- Attribute:
- Attribute_Label: HEL_LBL
- Attribute:
- Attribute_Label: CRP
- Attribute:
- Attribute_Label: Shape
- Attribute_Definition: Feature geometry.
- Attribute_Definition_Source: ESRI
- Attribute_Domain_Values:
- Unrepresentable_Domain: Coordinates defining the features.
- Attribute:
- Attribute_Label: Shape.len
- Attribute:
- Attribute_Label: shape
- Attribute_Definition: The representaion of the entity in the data.
- Attribute_Definition_Source: Farm Service Agency
- Attribute_Domain_Values:
- Enumerated_Domain:
- Enumerated_Domain_Value: polygon
- Enumerated_Domain_Value_Definition: 2-dimensional element.
- Enumerated_Domain_Value_Definition_Source:ESRI GIS software
- Attribute:
- Attribute_Label: Shape.area
- Attribute:
- Attribute_Label: statecd
- Attribute_Definition:
- Standard Code used to identify states, this is the state where the CLU is located. The 2-character FIPS code of the State or State equivalent.
- Attribute_Definition_Source: FIPS Pub 5-2
- Attribute_Domain_Values:
- Codeset_Domain:
- Codeset_Name:
- Codes for the Identification of the States, the District of Columbia and the Outlying Areas of the United States, and Associated Areas, FIPS 5-2.
- Codeset_Source:
- U.S. Department of Commerce, National Institute of Standards and Technology
- Attribute:
- Attribute_Label: countycd
- Attribute_Definition:
- Standard code used to identify physical Counties, unique only when combined with Statecd. The 3-character FIPS code of the County or County equivalent.
- Attribute_Definition_Source: FIPS Pub 6-4
- Attribute_Domain_Values:
- Codeset_Domain:
- Codeset_Name: Codes for the Identification of Counties, FIPS Pub 6-4.
- Codeset_Source:
- U.S. Department of Commerce, National Institute of Standards and Technology
- Attribute:
- Attribute_Label: farmnbr
- Attribute_Definition:
- Identifier attached to all land units under the control of a particular operator.
- Attribute_Definition_Source: Farm Service Agency
- Attribute_Domain_Values:
- Unrepresentable_Domain: Range 1 - 9999999
- Attribute:
- Attribute_Label: tractnbr
- Attribute_Definition:
- Identifier given to a collection of land units under the same ownership, unique to a farm number, State and County code.
- Attribute_Definition_Source: Farm Service Agency
- Attribute_Domain_Values:
- Unrepresentable_Domain: Range 1 - 9999999
- Attribute:
- Attribute_Label: clunbr
- Attribute_Definition:
- FSA assigned number to identify CLU for Agencies in a specific Service Center, assist in effective communication with the farmer and customers and provide a link to previous historical tabular data.
- Attribute_Definition_Source: Farm Service Agency
- Attribute_Domain_Values:
- Range_Domain:
- Range_Domain_Minimum: 0
- Range_Domain_Maximum: 999
- Attribute:
- Attribute_Label: calcacres
- Attribute_Definition: GIS system calculated acreage.
- Attribute_Definition_Source: Farm Service Agency
- Attribute_Domain_Values:
- Unrepresentable_Domain:
- Numeric Field value assigned based on irregular shaped field boundary.
- Attribute:
- Attribute_Label: heltypecd
- Attribute_Definition: Highly Erodible Land Type Designation.
- Attribute_Definition_Source: Farm Service Agency ( 6-CP )
- Attribute_Domain_Values:
- Enumerated_Domain:
- Enumerated_Domain_Value: E
- Enumerated_Domain_Value_Definition:Exempt
- Enumerated_Domain_Value_Definition_Source:Farm Service Agency
- Enumerated_Domain:
- Enumerated_Domain_Value: Y
- Enumerated_Domain_Value_Definition:Highly Erodible
- Enumerated_Domain_Value_Definition_Source:Farm Service Agency
- Attribute:
- Attribute_Label: cluclscd
- Attribute_Definition: Primary classification of land unit type.
- Attribute_Definition_Source: FSA Handbook 8-CM, revision 1, Amendment 1
- Attribute_Domain_Values:
- Enumerated_Domain:
- Enumerated_Domain_Value: 0
- Enumerated_Domain_Value_Definition: None
- Enumerated_Domain_Value_Definition_Source:Farm Service Agency
- Enumerated_Domain:
- Enumerated_Domain_Value: 11- 17
- Enumerated_Domain_Value_Definition:Urban CLU
- Enumerated_Domain_Value_Definition_Source:Farm Service Agency
- Enumerated_Domain:
- Enumerated_Domain_Value: 21 - 22
- Enumerated_Domain_Value_Definition:Cropland CLU
- Enumerated_Domain_Value_Definition_Source:Farm Service Agency
- Enumerated_Domain:
- Enumerated_Domain_Value: 41 - 43, 61
- Enumerated_Domain_Value_Definition:Forest CLU
- Enumerated_Domain_Value_Definition_Source:Farm Service Agency
- Enumerated_Domain:
- Enumerated_Domain_Value: 51 - 54
- Enumerated_Domain_Value_Definition:Water Body CLU
- Enumerated_Domain_Value_Definition_Source:Farm Service Agency
- Enumerated_Domain:
- Enumerated_Domain_Value: 71 - 76, 77
- Enumerated_Domain_Value_Definition:Barren Land CLU
- Enumerated_Domain_Value_Definition_Source:Farm Service Agency
- Enumerated_Domain:
- Enumerated_Domain_Value: 81 - 85
- Enumerated_Domain_Value_Definition:Tundra CLU
- Enumerated_Domain_Value_Definition_Source:Farm Service Agency
- Enumerated_Domain:
- Enumerated_Domain_Value: 31 - 33, 62
- Enumerated_Domain_Value_Definition:Range Land CLU
- Enumerated_Domain_Value_Definition_Source:Farm Service Agency
- Enumerated_Domain:
- Enumerated_Domain_Value: 75
- Enumerated_Domain_Value_Definition:Mined Land CLU
- Enumerated_Domain_Value_Definition_Source:Farm Service Agency
- Enumerated_Domain:
- Enumerated_Domain_Value: 23 - 24
- Enumerated_Domain_Value_Definition: Other Agricultural CLU
- Enumerated_Domain_Value_Definition_Source:Farm Service Agency
- Enumerated_Domain:
- Enumerated_Domain_Value: 91 - 92
- Enumerated_Domain_Value_Definition:Perennial Snow and Ice
- Enumerated_Domain_Value_Definition_Source:Farm Service Agency
- Attribute:
- Attribute_Label: fsa_acres
- Attribute_Definition:
- Recorded FSA Acreage (from County Office producer records)
- Attribute_Definition_Source: Farm Service Agency
- Attribute_Domain_Values:
- Unrepresentable_Domain: Numeric Field
- Attribute:
- Attribute_Label: cluid
- Attribute_Definition:
- Each CLU defined in the GIS database will be automatically identifed and tracked, for national purposes, with an ID number assigned by the automated system. This ID is not visible to the user, is a computer generated number that is a combination of the longitude and latitude coordinates of the CLU center point, will be unique to the Nation and will never be reused.
- Attribute_Definition_Source: Farm Service Agency
- Attribute_Domain_Values:
- Unrepresentable_Domain: Mixed Character Field/Numeric Field
- Attribute:
- Attribute_Label: comments
- Attribute_Definition: For County Office Corrections.
- Attribute_Definition_Source: Farm Service Agency
- Attribute_Domain_Values:
- Unrepresentable_Domain: Character Field
- Overview_Description:
- Entity_and_Attribute_Overview:
- SCIMS Name GIS Name Type Length Precision Scale ----------------------- -------- ------ ------ --------- ----- State_Code STATECD String 2 0 0 County_Code COUNTYCD String 3 0 0 Farm_Number FARMNBR Long 7 7 0 Tract_Number TRACTNBR Long 7 7 0 Common_Land_Unit_Number CLUNBR Long 7 7 0 CLU_Calculated_Acreage CALCACRES Float 8 7 2 High_Erodable_Land_ Type_Code HELTYPECD String 1 0 0 Common_Land_Unit_ Classification_Code CLUCLSCD String 2 2 0 FSA_Official_Acres FSA_ACRES Float 8 7 2 Common_Land_Unit_ Identifier CLUID String 36 0 0 UnKnown COMMENTS String 80 0 0
- Entity_and_Attribute_Detail_Citation:
- FSA Handbook 8-CM, revision 1, Amendment 1 Common Land Unit Instruction
- Distribution_Information:
- Distributor:
- Contact_Information:
- Contact_Organization_Primary:
- Contact_Organization: USDA-FSA Aerial Photography Field Office
- Contact_Address:
- Address_Type: mailing address
- Address: 2222 West 2300 South
- City: Salt Lake City
- State_or_Province: Utah
- Postal_Code: 84119-2020
- Contact_Voice_Telephone: 801-975-3503
- Contact_Facsimile_Telephone: 801-975-3532
- Contact_Electronic_Mail_Address: sales@apfo.usda.gov
- Resource_Description: Downloadable Data
- Distribution_Liability:
- In no event shall the creators, custodians, or distributors of this information be liable for any damages arising out of its use ( or the inability to use it).
- Metadata_Reference_Information:
- Metadata_Date: 20080422
- Metadata_Contact:
- Contact_Information:
- Contact_Organization_Primary:
- Contact_Organization: USDA-FSA Aerial Photography Field Office
- Contact_Address:
- Address_Type: mailing address
- Address: 2222 West 2300 South
- City: Salt Lake City
- State_or_Province: Utah
- Postal_Code: 84119-2020
- Contact_Voice_Telephone: 801-975-3503
- Contact_Facsimile_Telephone: 801-975-3532
- Contact_Electronic_Mail_Address: sales@apfo.usda.gov
- Metadata_Standard_Name:
- FGDC Content Standards for Digital Geospatial Metadata
- Metadata_Standard_Version: FGDC-STD-001-1998
- Metadata_Time_Convention: local time
- Metadata_Security_Information:
- Metadata_Security_Classification_System: None
- Metadata_Security_Classification: Unclassified
- Metadata_Security_Handling_Description: None
- Metadata_Extensions:
- Online_Linkage:<http://www.esri.com/metadata/esriprof80.html>
- Profile_Name: ESRI Metadata Profile