(Netherlands). Rafting on the Jeker is an entertaining recreational activity. Beginning in Kanne, it's possible to raft into the city of Maastricht on this relaxing river. The water flow is best in mid fall and spring. It is possible that obstacles are present when the water is too low. The trip from Kanne to Maastricht takes about 2 hours, and crosses the border between Belgium and The Netherlands.… (More on Jeker)