MURRAY-Darling Basin communities "will be" able to adjust to cope with the basin plan, Regional Australia Minister Simon Crean says.

He said the Federal Government's $100 million to help the basin's 167 councils diversify economies would be enough.

Mr Crean said the basin plan was now not as much about taking water out of the system as about finding ways to return water via investment in infrastructure works and measures.

This would "take the pressure off the need for more money on the diversification front," Mr Crean said.

But the Victorian Farmers Federation said irrigation communities throughout the river systems remained mostly unhappy with the plan.

And Victorian Water Minister Peter Walsh said this week that discussions were continuing with the Commonwealth over the plan and its implementation.

Mr Walsh said "Victoria has met its in-valley targets, meaning no further high-reliability entitlements will be purchased by the Commonwealth".

"However our communities have already lost significant amounts of water through previous ad hoc buy-back rounds, and Victoria expects appropriate assistance from the Commonwealth to support those communities develop new opportunities," he said.

Discussions with the Commonwealth and states about basin plan implementation continued and would "influence the final intergovernmental agreement and Water Recovery Strategy".

Federal Environment Minister Tony Burke this week also announced five regional organisations and irrigation businesses, representing 300 irrigators, would share $100 million to upgrade on-farm infrastructure.

It is the latest round of on-farm irrigation efficiency program grants from the Commonwealth, which is expected to produce 36.7GL of water entitlement for the environment.

National Farmers' Federation natural resource management policy manager Deb Kerr said the $100 million investment was pleasing but it remained to be seen whether it was enough to ensure basin towns survived.