Water levels on the Rhine River, one of Europe's busiest shipping arteries, have slightly risen this week, official data showed on Wednesday, but remain near record lows, hampering transport and production.The water level gauge at the chokepoint of Kaub near the city of Koblenz rose to 14cm (5.5 inc<p><p>https://www.marinelink.com/news/rhine-levels-disrupting-transport-542253</p></p>