The present invention provides a post-harvest reporting system that includes an apparatus and method for using time-stamped and location-based data recorded from multiple GPS receivers uploaded to a central information system. The apparatus and method include a GPS receiving device and a data logging device mounted on each of various vehicles used to harvest and transport crop from the field to a final storage place, and a way to upload the data to a central information system and generate reports therefrom. Data is input into the central information system such that data integrity checks can be performed. Reports are generated which track the path of a load of crop from harvest to storage can be used to evaluate efficiency of the harvest operation will track yield in certain portions of a field and source a particular load of crop to certify its origin.