This tool was created to serve farmers across the country with detailed parcel-level analytics.  In order to provide information about 600 million+ acres, we incorporate many datasets derived from satellite imagery. For example, the USDA Cropland Data Layer used satellite imagery to estimate annually which areas produce what type of crops. However, errors may occur leading, for example, to one area of a field being classified as not planted when it actually was.   We always recommend supporting your analysis and research with on-the-ground information.