The Opposition is concerned about Riverland and Murraylands residents who have disappointingly missed out on financial support amid rising water levels.

While the support package is welcomed, there are a growing number of people and communities who do not qualify for assistance.

This includes business owners who have made the brave decision to move sites - in order to continue trading - and locals who have spent thousands of dollars in a desperate bid to protect their properties with levees.

Shadow Minister for Water Resources and the River Murray, Nicola Centofanti, called on the Malinauskas Labor Government to urgently review its support package.

"We cannot afford to see local businesses and residents fall through the cracks because of ridiculous bureaucratic red tape," she said. 

"Anyone impacted by the floods should be eligible for financial support in some way, shape, or form.

"Peter Malinauskas needs to urgently identify and fix these gaps before it's too late."

Member for Hammond, Adrian Pederick, said some people are spending their life savings to fight the floods.

"Businesses, livelihoods and lives are on the line when the water peak rushes through and so far, the rollout of the package is being drip fed to a select few when many more are in urgent need of help," he said. 

"We are hearing alarming reports from Riverland and Murraylands business owners who are spending hundreds of thousands on generators when the support package only allows for a measly $4,000 of assistance.

"It's also heartbreaking to hear from residents who have taken matters in their hands by building levees to protect their homes, only to be told there is no financial support available for them."