Water levels remained high in many parts of the German state of Lower Saxony, with 23 of 97 measuring stations at the highest alarm level, Interior Ministry spokesman Oliver Rickwärtz said in the state capital of Hanover on Sunday. The levels were little changed, although slight falls were recorded in some areas, and dykes were still under pressure, he said. "We need staying power," he added. Thousands of emergency workers were in action between the Harz mountains and the North Sea, the ministry