Tillage Practices in the Conterminous United States, 1989-2004--Datasets by Aggregated Watershed; ds573_tillage_lu01

Dataset Identification:

Resource Abstract:
This dataset is an aggregation of county-level tillage practices to the 8-digit hydrologic unit watershed. The original county-level data were collected by the Conservation Technology Information Center (CTIC) and is a proprietary dataset. The CTIC collects tillage data by conducting surveys about tillage systems for all counties in the United States. Watershed aggregations were done by overlying the 8-digit HUC polygons with a raster of county boundaries and a raster of the 2001 National Land Cover Data for land use 82 (cultivated land) to derive a county/land-use area weighting factor. The weighting factor was then applied to the county-level tillage data for the counties within each 8-digit HUC and summed to yield the total acreage of each tillage type within each 8-digit HUC watershed. Tillage systems include three types of conservation tillage (no-till, ridge-till, and mulch-till), reduced tillage, and intensive tillage. Total planted acreage for each tillage practice for each crop grown is reported to the CTIC. The dataset includes total planted acreage by tillage type for selected crops (corn, cotton, grain sorghum, soybeans, fallow, forage, newly established permanent pasture, spring and fall seeded small grains, and "other" crops) for 1989-2004. The CTIC did not collect data nationwide for 1999, 2001, and 2003. In addition, data were not collected for all counties every year. Missing data are coded with -9999. The companion WBDHUC8 geospatial dataset is available online: http://water.usgs.gov/lookup/getspatial?wbdhuc8.xml .
Citation
Title Tillage Practices in the Conterminous United States, 1989-2004--Datasets by Aggregated Watershed; ds573_tillage_lu01
publication  Date   2011-01-01
presentationForm  tableDigital
Series
Name Data Series
Issue Data Series 573
cited responsible party - publisher
organisation Name  U.S. Geological Survey
Contact information
Address
, Reston, VA
cited responsible party - originator
organisation Name  Nancy T. Baker
cited responsible party - originator
organisation Name  Nancy T. Baker
cited responsible party -
organisation Name  
Contact information
Linkage for online resource
URL: http://water.usgs.gov/lookup/getspatial?ds573_tillage_lu01
Keywords:
Theme keywords (theme):
Inlandwaters
tillage practice
crop residue management
planted acreage
thesaurus name >
Title None
Location keywords:
Conterminous U.S.
agricultural land
inland waters
thesaurus name >
Title None
Temporal keywords:
1989-2004
thesaurus name >
Title None
purpose:
These data were developed as an ancilliary dataset to provide explanatory variables for U.S. Geological Survey water-quality investigations. The data were derived for use in regional and national studies.
Browse image (thumbnail):
thumbnail file name:  ...
file type: JPG
thumbnail file description:  Illlustration of data set
Resource language:  eng; USA
Resource progress code:  underDevelopment
Resource Maintenance Information
maintenance or update frequency:  asNeeded
Constraints on resource usage:
Constraints
Use limitation statement:
Although this data set has been used by the U.S. Geological Survey, U.S. Department of the Interior, no warranty expressed or implied is made by the U.S. Geological Survey as to the accuracy of the data and related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of this data, software, or related materials. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Constraints on resource usage:
Legal Constraints
use constraint:  otherRestrictions
Other constraints
Use Constraints: This data set was derived from county-level data and should be used for regional and national studies. Disaggregating the data to sub-county level is not recommended.
Constraints on resource usage:
Legal Constraints
Access Constraints  otherRestrictions
Other constraints
Access Constraints: None
Processing environment:  Native Dataset Environment: Microsoft Windows 2000 Version 5.2 (Build 3790) Service Pack 2; ESRI ArcCatalog 9.3.1.3000
Resource extent
Geographic Extent
Geographic Bounding Box
westBoundLongitude  -127.886246
eastBoundLongitude  -64.623167
northBoundLatitude  51.602543
southBoundLatitude  22.885847
Temporal Extent
2011-01-01
Additional information on resource:
The data in this dataset are contained in one dbase table. The table can be appended, via a relate table, to a geospatial coverage of the 8-digit hydrologic unit (HU) boundaries by the numeric 8-digit HU code (the numeric 8-digit code does not contain the leading zero for HUCs < 10000000. These data are intended to be used with a geospatial coverage of 8-digit HU boundaries (available online: http://water.usgs.gov/getspatial?wbdhuc8.xml ). The methods used to aggregate county-level tillage to 8-digit watersheds are provided in the accompanying data-series report: "Tillage Practices in the Conterminous United States, 1989-2004--Datasets Aggregated by Watershed" (Baker, 2011). The original county-level data are proprietary through the CTIC. Those needing access to the original data should contact Conservation Technology Information Center, West Lafayette, Ind., Web: www.ctic.purdue.edu.
Credits:
Conservation Technology Information Center, 2004, 2004 National crop residue management survey, Conservation Technology Information Center, West Lafayette, Ind., Web: www.ctic.purdue.edu .
point of contact - pointOfContact
individual Name Nancy T. Baker
organisation Name  U.S. Geological Survey
position Name Hydrologist/GIS specialist
Contact information
Telephone
Voice 317-290-3333 x185
Fax 317-290-3313
Address
5957 Lakeside Blvd., Indianapolis, IN, 46278 Country U.S.
electronic Mail Address ntbaker@usgs.gov
hoursOfService M-F 8:00-4:30
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Coverage description

Type of coverage content 
Cell value attribute description:  
Band
descriptor Internal feature number.
sequence Identifier
name OID
Band
descriptor Numeric 8-digit hydrologic unit code
sequence Identifier
name HUC8_N
Band
descriptor crop name
sequence Identifier
name crop
Band
descriptor crop planting year
sequence Identifier
name year
Band
descriptor No till conservation tillage, greater than 30 percent of soil covered with crop residue
sequence Identifier
name notill
Band
descriptor Ridge till conservation tillage, greater than 30 percent of soil covered with crop residue
sequence Identifier
name ridge
Band
descriptor Mulch till conservation tillage, greater than 30 percent of soil covered with crop residue
sequence Identifier
name mulch
Band
descriptor Reduced tillage (not considered conservation tillage), 15-30 percent of crop residue left on soil
sequence Identifier
name reduced
Band
descriptor Intensive or conventional tillage, less than 15 percent residue left on soil
sequence Identifier
name intense
Band
descriptor Total planted acres (sum of all tillage types)
sequence Identifier
name totacre
Band
descriptor Percentage of no tilll acres
sequence Identifier
name pctnotil
Band
descriptor Percentage of ridge tilll acres
sequence Identifier
name pctridge
Band
descriptor Percentage of mulch till acres
sequence Identifier
name pctmulch
Band
descriptor Percentage of reduced tilll acres
sequence Identifier
name pctreduc
Band
descriptor Percentage of intensive tilll acres
sequence Identifier
name pctinten
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Content information: feature catalog description

Included With Dataset  true
Feature Types  
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Scope of quality information
scope level  dataset
Resource lineage description
Completeness Commission
evaluation Method Description  None
Completeness Omission
evaluation Method Description  None
ConceptualConsistency
measure Description  None

Resource distribution information

Distributor
distributor contact - distributor
organisation Name  U.S. Geological Survey
position Name Ask USGS - Water Webserver Team
Contact information
Telephone
Voice 1-888-275-8747 (1-888-ASK-USGS)
Address
445 National Center, Reston, VA, 20192 Country U.S.
electronic Mail Address http://water.usgs.gov/user_feedback_form.html
Standard ordering process
fees None. This dataset is provided by USGS as a public service
Format
Format name DBF (dbase file)
Format version 
Digital Transfer Options
transfer Size 158.768
Linkage for online resource
URL: http://water.usgs.gov/GIS/dsdl/ds573_tillage_lu01.zip

Metadata data stamp:  2011-02-22
Resource Maintenance Information
maintenance or update frequency:  annually
notes: This metadata was automatically generated from the FGDC Content Standards for Digital Geospatial Metadata standard (version FGDC-STD-001-1998) using the 2012-06-20T17:21:00 version of the FGDC RSE to ISO 19115-2 transform.
Metadata contact - pointOfContact
organisation Name  U.S. Geological Survey
position Name Ask USGS -- Water Webserver Team
Contact information
Telephone
Voice 1-888-275-8747 (1-888-ASK-USGS)
Address
445 National Center, Reston, Virginia, 20192 Country USA
electronic Mail Address http://answers.usgs.gov/cgi-bin/gsanswers?pemail=h2oteam&subject=GIS+Dataset+ds573_tillage_lu01
Metadata scope code  dataset
Metadata language  eng; USA
Metadata character set encoding:   utf8
Metadata standard for this record:  ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
standard version:  ISO 19115-2:2009(E)
Metadata record identifier:  3b77a9a1-342a-4b83-a6c3-069b022269a4

Metadata record format is ISO19139-2 XML (MI_Metadata)