The principal rivers are: the Mississippi on the western border, and its tributaries, the Yazoo and the Big Black; the Pearl and Pascagoula, which drain much of the southern portion of the state and flow into the Gulf; and the Tombigbee, which drains most of the north-eastern portion.
As these were insufficient to give employment to all the prisoners, some were put to work on Yazoo Delta plantations on partnership contracts.
The state contains deposits of iron, gypsum, marl, phosphate, lignite, ochre, glass-sand, tripoli, fuller's earth, limestones and sandstones; and there are small gas flows in the Yazoo Delta.
During the next few years Fort St Peter and a small adjoining colony were established on the Yazoo River in Warren county, and some attempts at settlement were made on Bay St Louis and Pascagoula Bay.
Deposits of the Tertiary period form the basis of more than half the state, extending from the border of the Cretaceous westward nearly to the Yazoo Delta and the Mississippi Bottom, and southward to within a few miles of the Gulf coast.
The cities and towns having a population in 1900 of 4000 or more were: Vicksburg, Meridian, Natchez, Jackson, Greenville, Columbus, Biloxi, Yazoo City, McComb and Hattiesburg.
A feature of its surface is a strip of bottom land between the Mississippi and Yazoo rivers, known as the Yazoo Delta; it extends from north to south about 175 m., and has an average width of more than 60 m., and covers an area of about 7000 sq.
In the operations for the capture of Vicksburg in 1863 unsuccessful attempts were made in February and March by Porter's vessels to penetrate through connecting streams and bayous to the Yazoo river and reach the right rear of the Confederate defences on the bluffs.
In addition, there were the Yazoos in the Yazoo valley, the Pascagoulas, the Biloxis, and a few weaker tribes on the borders of the Mississippi Sound.
Of the Gulf coast, and, with alluvium, in the Yazoo Delta.