A few miles below Valenza it is joined by the Tanaro, a large stream, which brings with it the united waters of the Stura, the Bormida and several minor rivers.
Returning to the south of the Po, the tributaries of that river on its right bank below the Tanaro are very inferior in volume and importance to those from the north.
Flowing from the Ligurian Apennines, which never attain the limit of perpetual snow, they generally dwindle in summer into insignificant streams. Beginning from the Tanaro, the principal of them are—(1) the Scrivia, a small but rapid stream flowing from the Apennines at the back of Genoa; (2) the Trebbia, a much larger river, though of the same torrent-like character, which rises near Torriglia within 20 m.
To the south through the upper valley of the Tanaro, which in Roman times was under Albingaunum (Th.
ALESSANDRIA, a city and episcopal see of Piedmont, Italy, capital of a province which bears its name, situated on the river Tanaro, 57 m.
The citadel is on the left bank of the Tanaro, the town being on the right bank.
ALBA, a town and episcopal see of Piedmont, Italy, on the river Tanaro, in the province of Cuneo.
ASTI (anc. Hasta), 2 town and episcopal see of Piedmont, Italy, in the province of Alessandria, situated on the Tanaro; it is 22 m.
This league or concordia was soon joined by other cities, among which were Milan, Parma, Padua, Verona, Piacenza and Bologna, and the allies began to build a fortress near the confluence of the Tanaro and the Bormida, which, in honour of Pope Alexander III., was called Alessandria.