Scientists do not know why, or whether the water level could rise further.
With more rain on the way, river levels are expected to rise even further.
By 1979 the cost had risen further to £410 million.
It was rising far above the Earth's surface to meet us!
Potential for growth is rising, although we would like it to rise further.
It now stands at 4.5 percent and will probably rise further.
This year, as the number of incidents rose further, two students were killed in the schools.
And now that they were on the train, she could feel her blood pressure rising further.
Indeed, over the next few months the inflation rate might rise further.
Experts say the number has almost certainly risen further since 2003.