The river is about 54 kilometres (34 mi) long, of which about 50 kilometres (31 mi) is in Belgium (provinces of Liège and Limburg), and 4 kilometres (2.5 mi) in the Netherlands (province of Limburg), where it flows into the river Meuse at Maastricht (Netherlands).
Rafting on the Jeker is an entertaining recreational activity. Beginning in Kanne, it is possible to raft into the city of Maastricht on this relaxing river. The water flow is best in mid-fall and spring. Obstacles may be present when the water is low. The trip from Kanne to Maastricht takes about two hours and crosses the border between Belgium and the Netherlands.
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