Flood pictures
1 - levee
top and backwater
2 - Greenville,
Mississippi
3 - Washington
Avenue, Greenville, Mississippi
4 - Rolling
Fork, Mississippi
5 - main
street, Vidaliah, Louisiana
Heavy rains fell over the Mid Mississippi Valley in April
of 1927 which flooded down to the lower Mississippi Valley. The river
broke through 13 levees
along the river which caused widespread flooding that encompassed
26,000 square miles. The catastrophe caused more than a thousand
deaths and forced almost a million people from their homes. More than
five million acres of farmland were ruined. The flooding occurred
from April until June.
There is no stopping the Mississippi floods: they can only be kept
under control. In the fall and early winter the level of the river is
at its lowest, for although there is a slight rise in November the
freezing of the northern tributaries reduces the tendency to a larger
flood. In January, early rains in the Ohio valley regions where the
land is still frozen cause a quick flow of the water to the Ohio
river and, as the snows on the mountains begin to melt, they add to
the volume of water carried to the Mississippi. By April the eastern
flood waters are ceasing and the Mississippi subsides. The
Mississippi valley regions normally get their heaviest rainfall in
May and the resultant rise in the water is augmented by flood waters
from the Missouri, which enter the Mississippi in June. Seasonal
flooding is anticipated but the levees are constructed to control it
to some extent. As the height of the water is excessive, however,
breaches in the levee walls are deliberately made at certain points
to allow particular areas to flood and thus lessen the pressure of
water. These are the "backwaters," which occur in the St. Francis
Basin to the west of the river between Memphis and Helena, in the
great Yazoo-Mississippi Delta north of Vicksburg, in the Tensas Basin
west of Natchez, and at other selected points. When freak
circumstances occur and the overflow periods clash through the delay
of the Ohio floods or the early appearance of the Missouri flood
water, even the backwaters cannot take all the excess. By
extraordinary ill-fortune all these phenomena occurred together
between April and June in 1927 causing the worst flood disaster ever
recorded on the Mississippi when millions of tons of water burst
through the levees after a period of heavy rainfall and drowned the
land.
In the flood of 1882 a person could take a boat from Vicksburg
to Monroe (1 inch to the left of Vicksburg on the map), Louisiana,
some 80 miles!. This was almost the case in the Flood of 1927.