https://en.wikipedia.org/wiki/2011_Mississippi_River_floods
Dyersburg, a city in northwestern Tennessee, experienced the worst flooding with over 600 homes and businesses inundated as the Forked Deer River, a tributary of the Mississippi, flowed backwards into southern areas of the city. On May 10, the river reached 47.8 feet (14.6 m), the highest level reached at Memphis since 1937, when the river there reached a record 48.7 feet …