An engineering report on an eroding seawall in Dunedin has agreed with residents about the cause and that they are right in questioning its redesign.
The Dunedin City Council is investigating permanent solutions for the popular esplanade in the suburb of St Clair after deep sink-holes appeared from wave surges in June last year.
Surfers and other locals have said for years that the seawall, which was redeveloped in 2004, focused too much wave energy on the main beaches.
The council's roading maintenance manager, Peter Standring, said a draft engineering report agrees with that analysis and puts a bit of science behind it.
"It shows what they're observing is actually true. So hopefully there's an alignment there."
Mr Standring said the report shows that damage has occurred there about every five years and will continue until a permanent fix is applied to take energy out of the waves.
The final report will go to councillors in February.