The red brick wall, and gates which can be slotted in when needed, will protect the St Bede's and River Park areas.
Heavy Rain Batters South Coast
People are getting ready to protect their homes and property as more than three inches of rain threatens to cause rivers and streams to break their banks.
More than 30 flood warnings are in place for the whole of the south west, with more than 60 flood alerts for the whole of the south coast.
Dorset Chief Superintendent David Griffith said: “We advise motorists to exercise caution while driving and to show concern for other road users and nearby properties.
“Consideration should be given to the depth ofthe water. Do not take risks driving through flood waters.
“This is not just important for motorists’ own vehicles but also in view of other people’s property as the spray caused by driving through deep water can lead to waves, flooding adjacent properties and vehicles.
“The multi-agency resilience forum will continue to monitor the situation.
Meanwhile, Portland Coastguard responded to a number of flood warnings and alerts.
Having rescued two people stranded on top of their car which was under water as the River Brid broke its banks in Bridport and a man stranded in his wheelchair in water at Burton Bradstock, to name a few.
And the wash-out summer is set to continue in the coming weeks, with forecasters predicting the weather is still likely to be inclement when the Olympics start - although conditions are not expected to be as bad as they have been.
Red Jet 7 will be built at East Cowes, securing 85 jobs there - and will join the fleet next summer.
Five men have been questioned after shots were heard in Wimborne Road.
24-Year-Old Nikki Henderson Become The Youngest Ever Skipper Of A Clipper Round The World Yacht
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