Summary

Edward Douglass White Cubbins v. Mississippi River Commission…

That the volume of water from the vast watershed which the Mississippi river drains, and which, by means of percolation and tributaries, reaches that river, is susceptible now and again of being so simultaneously drained off from the watershed into the river, and thus so vastly increasing the amount of water to be carried off in a given time as to cause the overflow of the valley which the river traverses, and to thereby endanger the enormous interests concerned, is too well known to require anything but statement.
Source: Wikisource

Edward Douglass White Cubbins v. Mississippi River Commission…

But assuming, as we think it must be assumed, that the words 'accidental' and 'extraordinary' are to be taken as relating to the river,-that is, as alone embracing conditions not usually there occurring, and not ordinary to the stream in its usual condition, having regard to the flow through its natural bed, whether in high or low water, that view would be here irrelevant, since there is no suggestion of any bed of the river in high or low water except the space between the natural banks along which the levees were built, unless the whole valley be considered as such bed.
Source: Wikisource

Edward Douglass White Cubbins v. Mississippi River Commission…

It was alleged that in flood seasons, when the water in the Mississippi river rose above its natural low-water banks, such water would flow out and over the vast basins in which the alluvial valley between Cape Girardeau and the Gulf formed itself, and would then, either by percolation gradually flow back into the river, or be carried over and through the basins by the streams flowing through them into the Gulf of Mexico, where such streams emptied.
Source: Wikisource

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