Short answers, pulled from the story.
The modern name Saône derives from an ancient Gallic goddess named Sauc-Onna. Roman legionaries used this name to refer to the entire river that flows through eastern France before monastic copyists transformed it over many centuries.
The Saône rises at Vioménil at the foot of a cliff in the Vosges department at an elevation of 350 meters above sea level. Its total length spans 481 kilometers across the region including cities such as Mâcon and Lyon.
A maximum instantaneous flow reached 7,900 cubic meters per second on the 19th of December 1982. This event followed a major flood in November 1840 which carried nearly the same estimated flow rate and destroyed numerous habitations along the river valley.
The Saône possesses a substantially larger watershed covering approximately 32,000 square kilometers. At 32,000 square kilometers it holds the largest watershed of any French river not flowing directly into the sea.
The Saône links with the Loire via the Canal du Centre and connects to the Yonne by the Canal de Bourgogne. It also joins the Marne through the Canal entre Champagne et Bourgogne and reaches the Rhine through the Canal du Rhône au Rhin.