These aerial photographs (click here for photos) show floodwater threatening to inundate George Clooney's £10million sprawling country pile after the Thames burst its banks.
The Hollywood actor, 54, and his human rights lawyer wife Amal, 37, have been renovating their nine-bedroom mansion in a village near Reading, Berkshire.
But today the results of the multi-million pound revamp appeared at risk as muddied water poured on to a large patch of their sprawling garden, which backs on to the swollen river.
Water levels of the River Thames have risen dramatically after weeks of heavy rain and the Environment Agency has warned more low-lying areas could be flooded over the course of today.
There is a chance the water could spread further inland, coming within feet of the Clooneys' Grade II-listed bolthole.
A spokesman for the Environment Agency said: 'Levels on the River Thames at Reading have risen in response to recent rain. Showers on Monday may lead to flood water flowing out into low lying areas today.
'We advise everyone who lives in the flood plain to keep up to date with our flood alerts and to avoid swollen rivers and flood water.' He urged residents in the local area to stay up-to-date with the latest flood warnings.
Residents in the local area have been advised to 'take care' when out and avoid driving through flooded areas where possible. The Environment Agency spokesman added, 'just 30cm of flowing water is enough to move your car'.
Nearby homes and businesses have also been affected by the recent downpours, although they avoided much of the worst damage caused by a string of storms over winter.
Two days ago the Association of British Insurers said the final bill for the damage caused by flooding damage caused by storms Desmond, Eva and Frank during December and over the New Year to homes, businesses and motor is likely to reach £1.3 billion.
The photographs of the Clooneys' property appear to show that most of the extensive renovation work has now almost been completed on the property, which was bought months after the couple tied the knot in 2014.
The couple have installed a new 60ft swimming pool, surrounded in reclaimed York stone, a pool house and a tennis court.
A pergola, hot tub and 12-seater cinema will also be installed in a converted greenhouse on the site of the property, while builders also erected 10 CCTV cameras along the mansion's perimeter.
Even before the work began, the 17th Century property was already something of a luxury. The ivy-covered home boasts a suite of elegant reception rooms with high ceilings, book-lined walls, chandeliers and open fireplaces.
There is also a gym and steam room, a library, study, family room, formal dining room and cellar and a boat house.
By Stephanie Linning
© Associated Newspapers Ltd.