Nova Scotia's health minister says work is still being done to determine the extent of flood damage at a major health-care centre in Halifax, but some floors may not be salvageable.

Leo Glavine said he doesn't yet know how much of the Centennial building at the Victoria General was affected by a flood that closed down sections of the hospital late last month.

The flooding forced the relocation of about 50 patients and postponed dozens of surgeries after a pipe burst and left the fourth and fifth floors submerged.

Glavine says the century-old hospital needs to be replaced, but it's not known how much that would cost or when it would be done.

He says he will give regular updates on the assessment of the damage, and plans to replace the facility that has been beset by problems like legionnaires' disease.

The Victoria General site houses several specialized care centres, including cancer, ophthalmology and transplant units.