Work on a multi-million pound scheme to protect parts of Cambridgeshire from flooding started on Friday.
The planned new flood defences aim to cut the risk of flooding in St Ives and the Hemingfords.
The Environment Agency said that once the scheme was completed there would only be a 1% chance in any one year of properties in the area flooding.
The Easter 1998 floods affected over 60 homes and in January 2003, 40 properties flooded.
New flood walls
Following these floods the Environment Agency began to work out plans to improve flood defences in St Ives, Hemmingford Grey and Hemmingford Abbots.
The plans involve raising and strengthening existing defences as well as building new flood walls and banks.
The Agency hopes a new land drainage pumping station will protect the low lying ground around Victoria Terrace in Hemmingford Grey.
Work is expected to be completed by March 2007.