Hi Jess.
Here are few information that may be helpful for you.
Origin : Burgundy
Mouth : The English Channel (Bay of the Seine at Le Havre)
Basin countries : France
Length : 776 km (482 mi)
Source elevation : 471 m (1,550 ft)
Avg. discharge : 500 m3/s (18,000 cu ft/s)
Basin area : 78,650...