Lower Normandy ( called Basse-Normandie in French ) is one of the administrative Regions of France . It first became a region in 1956 , when the old region of Normandy was split , into a part to the west ( and south ) , the current Lower Normandy , and Upper Normandy , more to the east and the north . The traditional province of Normandy , with an integral history reaching back to the 10th century , was divided in 1957 into two regions : Lower Normandy and Upper Normandy .