Allocations for the Murray, Goulburn and Loddon systems have been increased by the Resource Manager for northern Victoria.
The Murray system increases from 90 per cent to 98 per cent of high-reliability water shares (HRWS).
The Goulburn system and the Loddon system both increase from 60 per cent to 71 per cent.
The low-reliability water share (LRWS) seasonal determination in the Campaspe system increases from 7 per cent to 16 per cent.
The Broken system increases from 27 per cent to 36 per cent HRWS.
The seasonal determination in the Bullarook system remains unchanged at 100 per cent HRWS and 100 per cent LRWS.
Resource Manager Mark Bailey said flows into the major storages continued to increase water resource availability across northern Victoria.
"The wet catchments are producing useful flows after rain," Dr Bailey said.
"The increased seasonal determinations announced today have come from the steady improvement in storage volumes."
Dr Bailey confirmed that Victoria could not store all the flows into its share of Lake Hume during August.
"Victoria's share of Lake Hume filled in late August and 23 gigalitres of flow into the reservoir could not be stored," he said.
"Approximately 10 per cent of the spillable volume will be deducted proportionally from Murray system spillable water accounts and environmental water accounts.
"Further deductions from Murray system spillable water accounts and environmental water accounts are possible this season."