Is wet feed and hay salvageable? The first thing to ask is where did the water come from? If hay, silage, or grain was in contact with flood water that could have come in contact with chemicals from building or cities (any water from rivers or streams) federal regulations state that it should not be fed and should instead be disposed of. Feed that was in fields that ponded due to rain or snow melt maybe salvageable. However, if water came up through tiles into the field it could contain animal waste products, high chemical levels and other contaminants.