"It is intended to be non-partisan, non-divisive, and a good opportunity to put up any questions that still need answers." Speakers would include Wellington economist Peter Fraser, who recently published a paper questioning the economics of the Ruataniwha scheme.
Farm adviser Barrie Ridler and Central Hawke's Bay farmer Andrew Wilson would also speak at the meeting.
Ms Elliott said Transparent Hawke's Bay had invited HBRIC to attend the meeting. HBRIC chief executive Andrew Newman said yesterday the group had asked if commercial manager Duncan MacLeod could attend but Mr MacLeod had a prior commitment.
"We have noted that if individual water users have questions to ask then it's easy to give Duncan a ring," Mr Newman said.
Four regional councillors with concerns about the Ruataniwha scheme previously said they intended to present a study into the feasibility of a cheaper alternative to the meeting.
The councillors - Rick Barker, Peter Beaven, Tom Belford and Rex Graham - unsuccessfully tried to get the council to fund the study this month.
Ms Elliott said Tuesday's meeting was aimed at examining the proposal on the table while Mr Graham said the four councillors were still seeking to raise funding for their feasibility study.
"We thought we'd go to the Waipawa meeting and just see what kind of support there is for an alternative, although we won't be presenting, we'll just be in the audience," Mr Graham said.