The land will need to be flattened and then the sea wall will be built.
"If we don't do something about the sea wall, it will threaten some important tourist attractions, " she said.
BBC: Llandudno sea wall damage prompts Conwy council concern
So before rebuilding houses, shops and factories, the sea wall will have to be restored and heightened, and the ground raised.
The authority said there had been recent examples of dogs being tied to lamposts or dumped over the sea wall at Clacton.
Also the sand blows in on the roads and that has to be cleared off and the sea wall has to be maintained.
The sea wall on the southern side of the Humber estuary protects two power stations, a steel works, an oil store and a port.
BBC: By BBC News Online Environment Correspondent Alex Kirby
The sea wall was also partially destroyed as a high tide of 9.9m (32.5ft) at 20:43 BST brought seaweed and pebbles crashing against it.
BBC: Guernsey's Perelle coast road collapses after high tide
"Failure to carry out the sea wall repairs will leave the cliff face unprotected and would eventually leave Happy Valley Road at risk of collapse into the sea, " it said.
BBC: Llandudno sea wall damage prompts Conwy council concern
At the disaster site, Giuliani said, workers were proceeding carefully to ensure the giant sea wall surrounding the underground levels of the World Trade Center complex was not in danger of flooding.
The new promenade behind has been designed specifically to accommodate the new sea wall, which is going to be probably about 70cm higher than it is currently.
BBC: Redcar seafront busy despite backfront engineering work
Waves presented as bright colours on the charts caused actual damage on Fair Isle, with the sea smashing a wall at the 120-year-old South Lighthouse and washing the debris several hundred metres inland.
Residents tied the mother to a sea wall so the calf wouldn't leave its side.
The destruction of the road and sea wall at Perelle came during a 9.9m (32ft) tide.
While some of the longer term developments, such as the town's proposed 'vertical pier' have proved controversial, visitors to the seafront who spoke to BBC Tees were largely supportive of the improvement works to the promenade and sea wall themselves.
BBC: Redcar seafront busy despite backfront engineering work
Rescue teams focused on an area of the Irish Sea around Blackpool's south pier and sea wall and earlier searched under the piers.
Every day at high tide a 5-foot sea wall surrounding the reinforced home is buffeted by waves.
Do we try to build a 50-foot-high sea wall all around the eastern coast, including Tokyo Bay?
During the earthquake, the ground level dropped by a metre, while the tsunami destroyed Onagawa's sea wall.
For an adrenaline rush, head to Punta Omo Morto, where a cliff drops 55 meters into the sea and turns into a gorgeous Gorgonian wall.
The bright red PlugBug World is easy to spot in a sea of white adapters in your bag or on the wall at the airport.
ENGADGET: PlugBug World brings global travel to the MacBook / USB charger
People living near an eroded sea wall in Hampshire have welcomed the start of its long-awaited reconstruction.
Most assuredly, a general strike that fizzles will not serve the cause of reducing inequality, or even help Occupy Wall Street find its sea legs.
Mr Maggs said planning applications for listed building consent for works on and around South Pier and Lighthouse Pier, and an application for construction of a new sea wall at South Pier have been published, but they do not cover the scheme as a whole.
The search was initially launched near the town's harbour wall, known locally as the pier, after a fisherman reported seeing the boy being swept out to sea by a wave.
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