"El río Somme es un río del norte de Francia que da su nombre al departamento homónimo. Con una longitud de 245 km, desemboca en el canal de la Mancha. En 1770 se inicia la construcción del canal del Somme que fue terminado en 1843 con una longitud de 156 km. Su nombre proviene de la palabra celta "Somme* que significa tranquilidad."Abstract from English Wikipedia:
"The Somme is a river in Picardy, northern France. The name Somme comes from a Celtic word meaning tranquility. The department Somme was named after this river. The river is 245 km (152 mi) long, from its source in the high ground of the former Forest of Arrouaise at Fonsommes near Saint-Quentin, to the Bay of the Somme, in the English Channel. It lies in the geological syncline which also forms the Solent. This gives it a fairly constant and gentle gradient where several fluvial terraces have been identified."