Constant heavy rainfall has flooded gardens and parks across Havering, with some up to five feet under water.
The River Ingrebourne burst its banks in Beauly Way, Hacton, earlier this afternoon.
One resident said: "This has been the second or third time in a short space of time that I have seen flooding like this.
"The waters usually recede quickly when the rain stops."
Another resident, walking through Upminster Golf Club, said the water was at least five feet deep despite normally being a "tiny little stream."
A week of rainfall causes flooding across Havering
London Fire Brigade said it supplied sandbags for bungalows and houses in Beauly Way, where there was approximately half a foot of water encroaching on buildings.
People in Carlton Road, Romford, and St Mary’s Lane, Upminster, also reported flooding to a depth of around eight inches with residents concerned water could enter their homes.
The council is aware of further flooding in Cross Road, Collier Row, Clay Tye in Upminster, Campion School, Rainham Road opposite Coniston, Park Farm Road by Parklands and the drains in Raphaels Park lake and Rise Park.
They added that a small sinkhole is causing some issues at the Manor Way junction of the A1306 in Rainham.
Leader of Havering Council, Damian White this evening (January 14) said that the situation was improving.
He said: "The river levels are dropping significantly from high tide on the Thames at 2.23pm, and will continue to go down over the next few hours.
"This will then allow the water that has come out of the river channels to drain away, and in particular on the River Ingrebourne in the Hacton Lane area.
"The extensive surface and ground water flooding in the St Mary's Lane area of Cranham is now going down fast and will continue to drain away. Tomorrow should be dry.
He added that there are no road closures in place but some lane narrowing in place in Rainham Road and Manor Way, whilst carriageway flooding subsides.
If you spot any flooded roads, blocked drains or have concerns over river levels, report it by calling 01708 434605 or visit http://orlo.uk/iRj04 for further guidance.
You can also call the Environment Agency helpline on 0345 988 1188.
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