Tas floods damage almost 100 properties

The State Emergency Service has to date identified damage to 53 homes, 18 businesses and 21 community facilities, as well as bridges and roads.

Acting director Leon Smith said the information would be further assessed and used to plan recovery efforts.

Watch and act emergency warnings remained in place on Monday morning for parts of the South Esk River in the north.

Meanwhile, Spirit of Tasmania passenger sailings between Melbourne and Devonport in northwest Tasmania resumed on Monday.

They were cancelled on Thursday when the port of Devonport was closed to commercial operations ahead of flooding in the Mersey River. 

Spirit of Tasmania chief executive Bernard Dwyer said additional sailings had been scheduled this week to clear a backlog of booked travellers.

Dozens of roads remain closed, with photos on social media showing boulders blocking Poatina Road in the Western Tiers.

The state's Great Lakes region registered 398 millimetres of rain in 30 hours when parts were lashed by wet weather from Wednesday to Friday.