It is usually found in low ground, but frequently on bluffs, and flood plain banks.
From the mouth of the Ohio to the Gulf, the Mississippi flood plain covers 30,000 square miles.
Again this region was the flood plain of rivers, where pebbles, mud and great logs of pine were washed in and deposited.
The flood plain then became a sea, in the middle of which the river's current flowed swiftly.
In reconstructing the history of this valley the chief difficulty arises from the old-age condition of the flood plain.
No longer does the rich soil of the Mississippi flood plain receive layers of sediment from the river's overflow.
The region covered by the Nile's overflow is the flood plain of this river.
Now we shall find the brook flowing in its channel with the flood plain deposits left high and dry.
Along its lower course “the flood plain is bordered by high bluffs of yellow sandstone.”
In the Kansas River flood plain and small tributary valleys, rich mesophytic forest of predominantly oak-hickory type was present.