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Research and Development Division


Announcement1:  A processing error was found in the original 2013 Oklahoma CDL. The "Fallow/Idle Cropland" category (Code 61) was erroneously omitted in the original ground truth training data, thus this category was missing in the final land cover classification. This new version was reprocessed to include the "Fallow/Idle Cropland" category and replaces the original. The 2013 national CDL and associated data was re-released @ 30m Jul. 21, 2014.

Announcement2:  The 1997-2013 CDL's were recoded and re-released Jan. 31, 2014 to eliminate confusion among the pasture and grass related categories, which were not always classified definitionally consistent from state to state and year to year and frequently had poor classfication accuracies.

Announcement3:   Please visit/bookmark the CropScape portal at http://nassgeodata.gmu.edu/CropScape to visualize, interact, and download the CDL. CropScape will begin delivery of the 2013 CDL on Feb. 3, 2014.

Announcement4:   Users can download the 2013, 2012, 2011, 2010, 2009, 2008 CDL's & the 2013 Confidence Layer & the 2013 Cultivated Layer from National Downloads. Warning many file sizes > 2gb.

Announcement5:   View our latest presentations in .PDF format.


2014

  • Published from 2014 IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing by C. Boryan, Z. Yang, L. Di and K. Hunt. A New Automatic Stratification Method for U.S. Agricultural Area Sampling Frame Construction Based on the Cropland Data Layer April 2014 Posted 7/22/14.
  • USDA Blog by R. Mueller. Need for Geospatial Data Grows Across the Country, April 2014. Posted 7/22/14.
  • Published from 2014 IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing by W. Han, Z. Yang, L. Di, B. Zhang and C. Peng. "Enhancing Agricultural Geospatial Data Dessimination and Applications Using Geospatial Web Services" V. 11 (7), March 2014 PP. 1-9. Posted 7/21/14.
  • Published from 2014 Journal of Geography by W. Han, Z. Yang, L. Di, A. Yagci, and S. Han. Making Cropland Data Layer Data Accessible and Actionable in GIS Education Posted 1/31/14.

  • 2013

  • Published from Transactions of the American Society of Agricultural and Biological Engineers by W. Han, Z. Yang, L. Di, and P. Yue. A Geospatial Web Service Approach for Creating On-Demand Cropland Data Layer Thematic Maps. V. 57, (1) PP 239-247. Posted 7/21/14.
  • Published from Remote Sensing of Environment by D. Johnson. An assessment of pre- and within-season remotely sensed variables for forecasting corn and soybean yields in the United States. V. 141, PP 116 - 128. Posted 1/31/14.
  • Published from ICAS VI, Rio de Janerio, Brazil by R. Mueller and J. Harris. Reported Uses of CropScape and the National Cropland Data Layer Program Posted 1/31/14.
  • Published from SAS Southeastern Users Group Meeting, Tampa FL by R. Seffrin. Evaluating the Accuracy Assessment Methods of a Thematic Raster through SAS Resampling Techniques and GTL Visualizations Posted 1/31/14.
  • Published from Proc. of the Second International Conference on Agro-Geoinformatics, Fairfax, Virginia, by Z. Yang. Exploring Continuous Corn Cropping Patterns and Their Relationship with Geographic Factors Aug. 12-16, 2013, Posted 1/31/14.
  • Published from Proc. of the Second International Conference on Agro-Geoinformatics, Fairfax, Virginia, by W. Han, L. Di, and Z. Yang. Developing geoprocessing service for Cropland Data Layer thematic map creation" Aug. 12-16, 2013, PP 572-576. Posted 7/22/14.
  • Published from Proc. of 2013 IEEE International Geoscience & Remote Sensing Symposium, Melbourne, Australia, by Z. Yang, G. Yu, L. Di, B. Zhang, W. Han, and R. Mueller. Web Service-Based Vegetation Condition Monitoring System - VegScape Posted 1/31/14.
  • Published from Proc. of 2013 IEEE International Geoscience & Remote Sensing Symposium, Melbourne, Australia, by C. Boryan and Z. Yang. Deriving Crop Specific Covariate Data Sets From Multi-Year NASS Geospatial Cropland Data Layers Posted 1/31/14.
  • Published from Proc. of 2013 IEEE International Geoscience & Remote Sensing Symposium, Melbourne, Australia, by Z. Yang, R. Mueller, W. Crowe. US National Cropland Soil Moisture Monitoring Using SMAP Posted 1/31/14.
  • Published from USDA Blog by R. Mueller. Bringing Ag Data to Life through Satellite Imagery Posted 5/1/13.
  • Published from SAS Global Forum by A. Zakzeski, R. Seffrin. An Innovative Approach to Integrating SAS Macros with GIS Software Products to Produce County-Level Accuracy Assessments Posted 1/31/14.

  • 2012

  • Published from IGARSS 2012 Conference by C. Boryan, Z. Yang, and L. Di Deriving 2011 Cultivated Land Cover Data Sets Using USDA National Agricultural Statistics Service Historic Cropland Data Layers. Posted 10/24/12.
  • Published from Agricultural Systems by D. Johnson A 2010 map estimate of annually tilled cropland within the conterminous United States. Posted 10/24/12.
  • Published from Proc. of the First International Conference on Agro-Geoinformatics, Fairfax, Virginia, by C. Boryan and Z. Yang A new land cover classification based stratification method for area sampling frame construction. Posted 7/22/14.
  • Published from Proc. of the First International Conference on Agro-Geoinformatics, Fairfax, Virginia, by G. Yu, L. Di, Z. Yang, Y. Shen, Z. Chen, and B. Zhang Corn growth stage estimation using time series vegetation index. PP. 1 -6. Posted 7/22/14.
  • Published from the Wisconsin State Cartographers Office by L. Ebinger 133 map categories! How the US Department of Agriculture solved a complex cartographic design problem. Posted 4/25/12.
  • Published from June 2012, Computers and Electronics in Agriculture by W. Han, Z. Yang, L. Di, and R. Mueller CropScape: A Web service based application for exploring and disseminating US conterminous geospatial cropland data products for decision support. Posted 4/9/12.
  • FY 2011 Report to Congress on the Implementation of The E-Government Act of 2002/Department of Agriculture CropScape – Linking Space and Agriculture. Posted 4/9/12.
  • NASS press release NASS Releases New Geospatial Data in CropScape. Posted 2/15/12.

    2011

  • Published from GeoCarto Intl by Claire Boryan, Zhengwei Yang, Rick Mueller, and Mike Craig Monitoring US Agriculture: the US Department of Agriculture, National Agricultural Statistics Service, Cropland Data Layer Program. Posted 1/30/2012.
  • USDA Blog USDA Celebrates the United States’ Entry into the Open Government Partnership. Posted 9/20/2011.
  • USDA Blog Farm Internet Access on the Rise, Now Let’s Connect. Posted 8/16/2011.
  • On September 14, 2011 the CropScape-Cropland Data Layer Project Team received a group achievement award at the 63rd Annual USDA Secretary's Honor Awards. Posted 9/15/11.
  • Published from GeoCarto Intl by C. Wang, F. Fritschib, G. Staceyc and Z. Yang Phenology-Based Assessment of Perennial Energy Crops in North American Tallgrass Prairie. Annals of the Association of American Geographers. V. 101 (4) 2011 Posted 7/22/2014.
  • USDA Blog New Geospatial Data Service Now Available. Posted 1/11/2011.
  • NASS releases the new CDL visualization portal CropScape.
  • NASS press release NASS Launches New CropScape Geospatial Data Service. Posted 1/10/2011.

  • 2010

  • Published from November 2010, Photogrammetric Engineering and Remote Sensing by David M. Johnson and Richard Mueller titled "The 2009 Cropland Data Layer".


    For questions and/or comments please contact the Geospatial Information Branch.

     


  • 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

    A CDL History White Paper: A brief history from 1971 to present