USDA-NASS 1999 North Dakota Cropland Data Layer

The USDA-NASS 1999 North Dakota Cropland Data Layer is a raster, geo-referenced, categorized land cover data layer produced using satellite imagery from the Thematic Mapper (TM) instrument on Landsat 5 and the Enhanced Thematic Mapper (ETM+) on Landsat 7. The imagery was collected between the dates of May 1, 1999 and August 5, 1999. The approximate scale is 1:100,000 with a ground resolution of 30 meters by 30 meters. The North Dakota data layer is aggregated to 17 standardized categories for display Constraints: There are NO copyright restrictions with either the NASS Cropland categorized imagery or ESRI's ArcExplorer software included on the CD-Rom. The NASS Cropland categorized imagery is considered public domain and FREE to redistribute. However, NASS would appreciate acknowledgment or credit for the usage of our categorized imagery. Disclaimer: Users of our Cropland Data Layer (CDL) and associated raster and vector data files are solely responsible for interpretations made from these products. The CDL is provided "as is". USDA-NASS does not warrant results you may obtain by using the Cropland Data Layer. Feel free to contact our staff at (HQ_RD_OD@nass.usda.gov) if technical questions arise in the use of our Cropland Data Layer. NASS does provide considerable metadata on the CDL in the Frequently Asked Questions (FAQ's) section on this CDL website, and on the ordered CD's. Also, there are substantial statistical performance measures by Analysis District within a State on the Landsat/IRS-1C LISS3 data categorization accuracies for each CD for each year. Not to be used for navigation, for informational purposes only. See full disclaimer for more information.