The swollen Mississippi River rolled south Wednesday as communities along its delta braced for flooding, and vast farms remained under threat as it left a trail of submerged homes, the CNN informs. The river crested at Memphis, Tennessee, a day earlier just a few inches short of a record set in 1937. As it slowly headed south, flooding concerns turned to Louisiana and Mississippi, where it is expected to rise to levels unseen since 1927. Louisiana Gov. Bobby Jindal said as many as 3 million acres could be affected by the flooding. Some 500 National Guard members have been mobilized so far and 21 parishes have issued emergency declarations, according to the governor. Arkansas estimates damage to state’s agriculture to top USD 500 million.