Hundreds of flood warnings are in place after widespread heavy rainfall across the UK.
Homes across the Midlands were inundated on Thursday while parts of southern England including Gloucestershire were also submerged.
On Friday morning, 302 flood warnings were in place in England, as well as 13 in Wales, with forecasters predicting showers could continue.
Train companies have also been affected by the deluge, with Great Western Railway warning that several lines remain closed due to flooding, including between Swindon and Bristol Parkway, Reading and Castle Cary, and Liskeard and Looe in Cornwall.
A landslip at Arlesey in Bedfordshire was also affecting Thameslink services.
In east London, about 50 people were led to safety by firefighters overnight after a canal burst its banks in Hackney Wick, causing flooding in an area of around 10 acres.
The highest rainfall totals recorded on Thursday were 35.2mm at Otterbourne in Hampshire, with a wide range of 20-30mm across much of the southern counties of England.
The Environment Agency said the impact of surface water and river flooding would continue to be “significant” across parts of England over the next five days.
A major incident was declared amid widespread flooding in the Midlands on Thursday, and a yellow weather warning was issued by the Met Office for rain across the south.
Stefan Laeger, of the Environment Agency, said: “Significant surface water and river flooding impacts are possible across parts of the Midlands and the south and east of England on Thursday and Friday due to heavy localised rainfall falling on already very saturated catchments.
“Ongoing minor impacts are also likely across much of England over the next five days as some larger rivers slowly respond to recent and forecast rain.”
It comes days after disruption caused by strong winds and rain from Storm Henk, which has left the ground saturated and more prone to flooding.
Nottinghamshire county council declared a major incident “due to rising levels along the River Trent” and said residents who live in flood-risk areas should be prepared to evacuate their homes.
It added that forecasts were showing that peaks along the Trent could “come close to the highest levels on record from the year 2000”, adding that residents in areas along the Trent valley should be “prepared for flooding”.
A man stranded on his shed roof by floodwater was rescued by a crew from Highfields fire station who used a boat to bring him safely to land.
Nottinghamshire county council said: “Key tributaries which feed in to the River Trent, including the River Derwent, the River Soar and the River Dove, have already reached their peaks and high water levels will now pass down the Trent, which is likely to lead to flooding to properties and roads.
“Residents who live in the flood-risk areas are being asked to ensure they have preparations in place in case they are asked to evacuate. Councils, emergency services and the Environment Agency have been providing emergency support to communities impacted and will continue to provide support across the county.”
Several residents of Radcliffe Residential Park, an estate of static caravans for the over-55s to the east of the city, were evacuated due to high water levels.
Elsewhere, a number of cows drowned in the village of Sawley, Derbyshire, prompting an animal welfare investigation.
After rainfall in London, a party boat which acts as a floating bar, restaurant and nightclub sank in the Thames.