	high water extends rhine river blockage rising water levels on the rhine caused by heavy rain are delaying an operation near karlsruhe to raise two sunken boats which have blocked the river s main navigation channel since early last week a karlsruhe water authority spokesman said he said two floating cranes were unable to begin lifting the sunken tug orinoko and its lighter because the water level had reached centimetres and was forecast to rise to cm by tomorrow he was unable to say when the operation might begin meanwhile high water at cologne has forced vessels to travel at reduced speed a water authority spokesman in cologne said but a water authority spokesman in duisburg kms north of cologne said vessels there were moving normally reuter 
