from its source, it joins the Danube, which river down to that point it equals in length and far exceeds in volume of water.
The more important of the suburbs lie towards the east, where the promontory joins the main plateau, of which it forms the north-western extremity.
of the Caudine Forks, and so beyond Telese joins the Volturno.
The Nera, which rises in the lofty group of the Monte della Sibilla, is a considerable stream, and brings with it the waters of the Velino (with its tributaries the Turano and the Salto), which joins it a few miles below its celebrated waterfall at Terni.
in the north of the department; the Oise, traversing the northwest, with its tributaries the Serre and the Aisne, the latter of which joins it beyond the limits of the department; and the Marne and the Ourcq in the south.