Announcement: The Spatial Analysis
Research Section has released ALL 2008 Heartland Cropland Data Layer Products. It is anticipated that additional CDL's for the Southwest and Mid-Atlantic Regions will be released in mid-Summer 2009.
These
products will be downloadable from this website or the Geospatial Data Gateway.
CDL data prior to 2007
is available at the Data Gateway.
For questions and/or comments please contact the
Geospatial Information Branch.
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The
Spatial
Analysis Reseach Section has released the 2008
Cropland Data Layer (CDL) for the following
States: AR, CO, IA, IL, IN, KS, KY, LA, MI, MN, MO,
MS, ND, NE, OH, OK, SD, TX, and WI. These
products are issued in unsmoothed format with associated metadata.
Click on the following link to download 2008_CDL_Release.zip
(255 MB). |
The Spatial Analysis Reseach Section has re-released
the 2006 CDL for the following States: AR, IA, KS,
LA, MN, MO, MS, ND, OH, SD, and WI. These products
were re-issued in unsmoothed format with associated metadata. Click on
the following link to download 2006_CDL_Re-Releases.zip
(141 MB).
The 2007 Cropland Data Layer (CDL) DVD
products over the Lower Mississippi Valley
and Pacific Northwest, including; Arkansas, California, Idaho,
Louisiana, Mississippi, Montana, Oregon, and Washington. These products were built exclusively with AWiFS imagery. Two California CDL's were created using both AWiFS and Landsat 5 TM imagery.
Please visit the Geospatial Data Gatewayto
download the NASS CDL for free!
The Cropland Data Layer (CDL) contains crop specific digital data
layers, suitable for use in geographic information systems (GIS)
applications. The CDL Program annually focuses on the
corn/soybean/rice/cotton agricultural regions in the Midwestern and
Mississippi Delta States with the focus of producing digital
categorized geo-referenced output products using imagery from the
ResourceSat-1 AWiFS
sensor. See the Indian Government's
National Remote Sensing Agency handbook for the Resourcesat-1
satellite. The CDL Program represents a cooperative venture between
three USDA Agencies (Headquarters units of NASS, the Foreign Agriculture Service IPA
group and the Farm Service Agency/Aerial Photography Field Office)
plus in-state agreements between NASS Field Offices and their
respective state government or university partners. Currently there are
numerous historical
research reports with more detailed information on NASS's general
uses of remote sensing and GIS.
The 2007 Cropland Data Layer
product contains statewide categorizations of ortho-rectified mosaicked
images using See5 software,
and are exported to GeoTIFF format. ESRI’s ArcReader
thin-client browser can be downloaded to view the
CDL's. Limitations of this data are declared.
The CD-ROM's and/or DVD’s are at cost of reproduction to the public.
Visit our cooperators sites to see
how they are using and enhancing the Cropland Data Layer products.
An independent CDL accuracy assessment performed by the University of Illinois at Urbana-Champaign Institute of Natural Resources Sustainability titled:
Assessment and Potential of the 2007 USDA-NASS Cropland Data Layer for Statewide Annual Land Cover Applications
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