Hamme is a small river in Germany, Lower Saxony, north-east of Bremen. Its source is north of Osterholz-Scharmbeck. It flows through the moors north-east of Bremen, and meets the river Wümme in Ritterhude. From this junction, the river is called Lesum. The Lesum flows into the river Weser in Bremen-Vegesack. With an area of 47,618 km and nearly eight million inhabitants, Lower Saxony (German Niedersachsen) lies in north-western Germany and is second in area and fourth in population among the countrys sixteen Bundesl nder (federal states). ... For other uses, see Bremen (disambiguation). ... Wuemme river (German Wümme) is a river in northern Germany. ... Wuemme river (German Wümme) is a river in northern Germany. ... Weser watershed River Weser The Weser is a river of north-western Germany. ... For other uses, see Bremen (disambiguation). ...