Twenty-six parishes in the state have declared states of emergency ahead of the surging waters . NEW : 600 evacuated in Jackson , Mississippi . Corps of Engineers reports flood damage . Nuclear plant in California could be affected by flooding . About 3 million acres of farmland are flooded in four states .
NEW : 600 evacuated in Jackson , Mississippi . Corps of Engineers reports flood damage . Nuclear plant in California could be affected by flooding . About 3 million acres of farmland are flooded in four states .