Yarriambiack Shire Council will write to GWMWater and Wimmera Catchment Management Authority about the effects the removal of the levee bank could have on the creek.

Council will also ask GWMWater to fix a broken concrete sill in the Wimmera River as soon as possible, with concerns it reduced the amount of water flowing into Yarriambiack Creek.

Council infrastructure and planning director James Magee said the levee, or regulator, was built in the creek about 200 metres from the Wimmera River more than a century ago.

He said the regulator had two 900-millimetre culverts, through which water should flow.

Mr Magee said the regulator, owned by GWMWater, limited natural flows up the creek.

He said many people believed it should be removed to enhance the sustainability of the creek.

"A flood study several years ago concluded the regulator provided little, if any, impact during large floods," he said.

Mr Magee said the catchment authority believed an additional flood study was required to assess the removal of the regulator.

Councillors will ask GWMWater and the catchment authority to provide a specification for the flood study to examine the effects of the regulator's removal on the creek.

Council will also obtain quotations for the study and source funding.

Yarriambiack Mayor Andrew McLean said council would ask to have a flood study done in the area.

"We have a couple of flood studies going, if not already started, in the near future," he said.

Cr McLean said the regulator did not help during floods.

"We're trying to ensure more flows going up the Yarriambiack Creek," he said.

"When it floods, the water goes around the regulator.

"Hopefully the flood study will find all this out."

Cr McLean said the Yarriambiack Creek Advisory Committee had expressed concerns about the regulator.

Yarriambiack Shire Council will write to GWMWater about the broken concrete sill in the Wimmera River, just downstream of the Yarriambiack Creek off-take.

The sill was placed in both waterways in 1967 to provide a water-sharing arrangement.

Cr McLean said it was in a state of disrepair.

"It's broken up. Parts of it are washing and breaking away," he said. "The water's flowing underneath it."

Cr McLean said the sill continued to deteriorate.

Mr Magee said GWMWater owned the sill. He said a broken sill reduced the amount of water distributed to Yarriambiack Creek at the junction.

"It is essential for the sill to be maintained for Yarriambiack Creek to receive its fair share of natural flows in the future," he said.