The state government has announced $1.2 million funding to support the Longreach Regional Council to complete emergency repairs on the Isisford Weir.
While in Longreach holding regional Cabinet on Tuesday, Premier Annastacia Palaszczuk announced the funds.
"Water is our most important resource, particularly in proud agricultural communities here in West Queensland," the Premier said.
"We know that to rebuild our economy, we must invest in new infrastructure and safeguard our water supply - that's what today's announcement is all about.
"I asked the Mayor what his number one concern was for Longreach and he said the weir."
The 190 megalitre Isisford Weir, built in 1934, works in unison with a 250 megalitre off-stream storage facility and the local water treatment plant.
A recent structural assessment report identified the need for emergency repairs.
Water minister Glenn Butcher said the weir repair works would be supervised by Longreach Regional Council as part of their capital works program and are anticipated to be completed by the end of 2021.
"As well as securing water supplies for Isisford, this project will help to boost the economy of the Isisford Region as council completes the work for this important project," he said.