Wiktionary
n. (plural of river basin English)
Usage examples of "river basins".
The rains filled the all-but-empty river basins, and made fording the streams more of a problem than before.
Since then, more than $90 million has been spent on river basins and marshes, from the Withlacoochee to the edge of the Everglades.
The civilization of the country is based upon it, for without its great yield from few seed, the enormous slave population along the broad river basins could not be fed, and this civilization depended upon slavery.
At every period the area including the two river basins - Indus and Ganges - and the plateau of the Deccan, contained a mixture of races devoid of unity but including every stage of civilisation, from the very primitive to the highly evolved.
Every Western schoolchild is dutifully taught that the Near East is the cradle of civilization, and that the first civilizations arose in Egypt and Mesopotamia, nourished by the Nile and the Tigris-Euphrates river basins.