A right tributary of the Po River it flows in a northeasterly direction within the hilly region of the Basso Monferrato, through the Val Cerrina. (This valley, however, was not formed by the Stura: rather it was excavated by the major watercourse of Piedmont which existed during the Lower Pleistocene, draining the western Alps and following an east-south-easterly course generally to the south of today's Po.[4])
Its mean discharge of a mere 3.2 cubic metres per second (110 cu ft/s) relies immediately upon precipitation, and is subject to marked seasonal variations.
Notes
This article, as of 3 December 2009, was a free translation of its counterpart in the Italian Wikipedia: specifically this version.