The owner of a Riverland caravan park that flooded on Wednesday after a levee breach says initial predictions of a lower level flood than that which transpired have let down people like her.
The Kingston-on-Murray Caravan Park was flooded this morning, a week after residents and holiday-makers were evacuated after a warning from the State Emergency Service (SES).
The SES was concerned about defects in the levee that could cause it to fail.
Barb Calvert, who owns the caravan park with her husband Geoff, said an "unprecedented" amount of water had flooded the property on Wednesday.
"Someone got the figures wrong. It's higher than 1931," Ms Calvert said.
The South Australian government last week updated its flood forecast to predict that the water level in the River Murray would exceed records set in 1931 and 1974, but not 1956.
It had earlier predicted the flood level would be similar to that in 1974 and 1975.
"No-one seems to quite know," Ms Calvert said.
"Everyone up here is suffering because they don't know if they're going to be the next chucked out."
Jodie Parton, who helped build the levee as a volunteer, said none of the cabins at the site were able to be saved.
"[The Calverts] were spending every cent they had on the levee bank," she told ABC South Australia.
"There was no money for them to get cranes in so not one cabin has been saved."
Emergency Services Minister Joe Szakacs said the levee breach had been expected.
"I think [it] demonstrates the excellent and important work that authorities are doing and will continue to do when it comes to inspecting levees," he said.
There are no concerns about the levee protecting the town of Kingston-on-Murray.
Warnings more flooding and storms
The SES says a levee at Toora, near Murray Bridge, is at risk of failing.
It says there is now a high risk of flooding for low-lying areas along Toora Road because of the rising River Murray.
The SES also issued a watch and act warning for the Gurra Gurra area opposite Berri last night, warning residents to prepare to evacuate.
A severe thunderstorm warning is also in place for the Riverland and much of the north-east of South Australia.
The Bureau of Meteorology says severe thunderstorms are likely to produce heavy rainfall that may lead to flash flooding, damaging winds and large hailstones.
Loxton has received about 12 millimetres of rain since 9am.
