The Latest Breaking News from Riverland

Despite being based well out of any flood zones, a brewery and winery in SA's Riverland are experiencing a downturn in business in what should be their busiest season.

Cathy's home in South Australia usually sits 1 kilometre from the River Murray, but as daily flows across the border reach 1974 flood levels, the water is now lapping up to her property.

As the River Murray continues to rise, farmers worry about the impacts of having their power cut off. Meanwhile, authorities will begin relocating a group of the most vulnerable aged care residents from Renmark this week.

Prime Minister Anthony Albanese and Premier Peter Malinauskas have visited the South Australian town of Renmark which is expecting record flood levels.

A former South Australian police officer jailed for drug trafficking will be released from prison on a good behaviour bond after his sentence was found to be "manifestly excessive".

Power has already been cut off to hundreds of properties in the Riverland and that number could become thousands in the coming weeks.

Those in Greater Adelaide consume about 200 gigalitres of water a year, but now the state faces the prospect of that much water coming across the border into the River Murray every day, Premier Peter Malinauskas says.

The South Australian government has declared a major emergency as River Murray floodwaters continue to rise, with the potential for a second peak "even higher than the first".

Authorities warn that approximately 2,000 shacks and homes will be disconnected from electricity in South Australia's Riverland in the coming weeks.

Riverland locals are bracing for inundation, with increased flows down the River Murray expected to "overtop" the second floor of low-lying dwellings — but some say preparations for anticipated floodwaters fall well short of what is needed.

SA authorities say flooding along the Murray in the state's Riverland will get worse, with the latest forecasts for even more water to flow down the river.