Aerial tours indicate that some hog waste lagoons were inundated by floodwaters in North Carolina but did not show any confirmed breaches or overtopping, according to the state’s Department of Environmental Quality. State environmental inspectors flew over farms in eastern North Carolina over the weekend to survey the impact of Hurricane Matthew. “We are cautiously optimistic that North Carolina’s swine operations have survived the storm without experiencing the catastrophic damage we saw during Hurricane Floyd,” said Donald R. van der Vaart, secretary of the state environmental department. “We will know more as floodwaters recede in the days to come but we are heartened by what we have seen so far.”