Nel meets the teams fighting the floods
Forecasters say parts of southern England are in for a real downpour over the next few days - in fact, they say a month's worth of rain could fall in just a few days.
Severe flood warnings remain in place along the River Thames, and there are fears flooding could spread along the River Severn and the River Wye.
More than a thousand homes have been evacuated, mainly in the Thames Valley.
Emergency crews, Environment Agency workers and council staff are having to work around the clock to fight the flood water and give people the support they need.
Nel went to an emergency centre in Wraysbury to meet some of them.