| BILDBESCHREIBUNG= Confluence of the Werse with the Ems near Münster-Gelmer
The '''Werse''' (river no. 32) is a 67 km long, left-hand tributary of the [[Ems (river)|River Ems]] in [[Münsterland]], [[North Rhine-Westphalia]] in Germany. The [[Drainage basin|catchment area]] of the Werse is 762.47 km². Its name may be derived from a pre-Indo-European language, [[Vasconic substratum theory|Vasconic]], from which the [[Basque language]] developed. Its [[water quality]] is Class II-III and, in places, Class II. Contamination from communal sewage farms, fish ponds, but especially diffuse contamination from agriculture pollutes the mass balance of the Werse and leads to [[eutrophication]] along the entire river course, especially in the retention basin areas.<ref>''Gewässersteckbrief der Werse.'' Ministerium für Umwelt und Naturschutz, Landwirtschaft und Verbraucherschutz des Landes Nordrhein-Westfalen [http://188.8.131.52/bestandsaufn/daten/ems/tab/tab1_2_4.pdf]</ref>
== Course ==
The Werse rises in the [[Beckum Hills]] near [[Beckum, Germany|Beckum]] from three headstreams: the ''Lippbach'', ''Kollenbach'' and ''Siechenbach''. The name ''Werse'' is used from the Osttor and above the Kollenbach. From Beckum the Werse flows westwards. Shortly before [[Ahlen]] it turns northwest and, near [[Drensteinfurt]], then via [[Albersloh]] it flows northwards. Near [[Münster-Gelmer]] near the [[Haskenau]] it finally discharges into the [[Ems (river)|Ems]]. The river is regulated by several overflow [[weir]]s.