From Parks Tas website:

Advice from the Parks and Wildlife Service:

Nineteen Lagoons Open

Lake Augusta Road is now open to regular traffic for day use only.  Lakes and tracks north of Lake Augusta Road are open to visitors and fishers for day use only.  Pillans Track remains closed and overnight camping within the 19 Lagoons area is not permitted at this stage.  Lakes and tracks south of Lake Augusta Road from Thousand Lakes Lodge through to the Pine River remain closed due to continuing fire-fighting operations. Please drive to the conditions and be aware that fire fighters are still actively using Lake Augusta Road for fire fighting operations.

https://www.ifs.tas.gov.au/news/2019/feb/15/nineteen-lagoons-open

NORTHERN REGION

Central Plateau Conservation Area 
– tracks/lakes north of Lake Augusta Road, including Pillans Track Road, Julians Crossing, Pillans Lake–Lake Field remain closed for overnight camping
– tracks/lakes south of Lake Augusta from Thousand Lakes Lodge to the Pine River, including 19 Lagoons (O’Dell Lagoon / Lake Flora, Lake Kay Road, Lake Botsford, Double Lagoon Road, First Lagoon, Second Lagoon), remain closed
– tracks/lakes west of Lake Augusta, including Talinah Track Road (closed to vehicles), Lake Fanny beyond Talleh Lagoons, Lake Antimony, Lake Fergus, Higgs Track (closed past Lake Nameless), Ritters Track, Explorer Creek Track, Blue Peaks Track, and all remote walking routes east of the central Walls of Jerusalem area remain closed.

Walls of Jerusalem National Park – Little Fisher River Track is closed and routes east of Mt Jerusalem remain are closed

Liawenee Conservation Area – the reserve is closed

Rainbow Point Conservation Area – the reserve is closed

Remarkable Rock Conservation Area – the reserve is closed

Five Mile Pinnacles Conservation Area – the reserve is closed 

Little Pine Lagoon Conservation Area – the reserve is closed

Top Marshes Conservation Area – the reserve is closed

Steppes Homestead State Reserve – the reserve is closed