In the territory of Gattinara it receives the waters of its mail natural tributary named Rio della Marchiazzola .
The Marchiazza flows close to the village of Lozzolo and comes out of the hills entering the Po plain .
In the territory of Gattinara Marchiazza receives the waters of Marchiazza 's mail natural tributary named Rio della Marchiazzola .
The Marchiazza flows close to the village of Lozzolo and comes out of the hills entering the Po plain .