The term 'River of Northwest Germany' refers to three major rivers in the region: the Ruhr (4 letters), the Weser (5 letters), and the EMS (3 letters). The Ruhr is a major river in western Germany, flowing through the Ruhr valley and emptying into the Rhine. The Weser is a major river in northwestern Germany, flowing through the states of Lower Saxony and North Rhine-Westphalia before emptying into the North Sea. The EMS is a river in northwestern Germany, flowing through the states of Lower Saxony and North Rhine-Westphalia before emptying into the Dollart Bay. All three rivers are important for transportation, industry, and recreation.