More and more dairies are using drone technology to measure the size of their forage piles and more accurately estimate the amount of feed they have in inventory for the next year. The technology is enabling dairies to get within just a few days of predicting when they may run out of feed. That could be particularly helpful to others this year in drought-stricken areas where forage tonnage has been lighter than usual. A drone and cloud-computed data calculations for forage pile measurement is replacing previous estimation methods. That includes measurement wheels, surveying equipment, hand calculations or just broad percentage reductions from the total forage tonnage harvested.