Gütersloh is a city in North Rhine-Westphalia, Germany, in the area of Westphalia and the administrative region of Detmold. Gütersloh is the administrative centre for a district of the same name and has a population of 100,194 people.

The Ems is a river in northwestern Germany. It runs through the states of North Rhine-Westphalia and Lower Saxony, and discharges into the Dollart Bay which is part of the Wadden Sea. Its total length is 362.4 kilometres (225.2 mi). The state border between the Lower Saxon area of East Friesland (Germany) and the province of Groningen (Netherlands), whose exact course was the subject of a border dispute between Germany and the Netherlands, runs through the Ems estuary.