Selby and nearby areas were hit by floods in 2000 when 152 properties were damaged when the Ouse burst its banks.

Environment Agency officials said the area was under a stretch of water larger than Lake Windermere.

Existing defence walls will be strengthened, new earth embankments built and new walls built.

The work will be carried out in phases over three years.

Flood defence engineer Camilla Bennett said: "Once completed it will reduce the risk of flooding to about 2,500 homes and businesses."