The Niers is a river in Germany and the Netherlands, right tributary to the river Meuse. Its source is near Erkelenz, south of Mönchengladbach, in North Rhine-Westphalia (Germany). The Niers flows through Mönchengladbach, Viersen, Wachtendonk, Geldern and Goch before flowing into the Meuse just across the border with the Netherlands, in Gennep.