The beach defences at Monifieth have taken a pounding from the bad weather, leaving part of the bay defenceless against high tide flooding.
A section of the wooden fencing and its concrete foundations parts of which were only recently installed have been ripped from the sand along the bank.
The barrier, which acts as a defence to coastal erosion, now has a gap that will be unable to ward off any high tide flooding.
Councillor Rob Murray said people should keep clear of the wreckage, but that the beach itself is safe.
“There’s a couple of sections down,” he said. “The joined wall was put up a number of years ago to reduce the possibility of the loss of ground.
“This is the first occasion since the wall went up that this had happened.
“I’ve never seen such a loss of sand in all my time. We had a nice build-up of sand and it’s all been lost over the last week to 10 days.
“The roads department is aware of what’s going on and will investigate the safety of the wall and how to repair it.
“They’re going to need to look at the whole thing before deciding what they are going to do about it.”
An Angus Council spokeswoman said: “As soon as we were aware of the issue we attended to carry out an initial inspection to assess the damage.
“As soon as the weather permits we will be carrying out a further full inspection.”
The damage follows warnings from the Met Office to keep away from the waterfront during bad weather.