Hundreds of people are expected to descend on the first meeting of the new Hawke's Bay Regional Council today to show their concern that the proposed Ruataniwha dam may not proceed.
They fear a block of four newly-elected councillors may derail the council project.
Federated Farmers is putting their weight behind tomorrow's action, asking "every farmer who can" to drive their ute in the Rally 4 Ruataniwha, meeting at the council's Dalton St offices in Napier at 8.45am, before attending the 9am meeting.
"Ruataniwha is more than a future for farming in Central Hawke's Bay.
"It will prove the common sense of storing water and provides the hinge on the door for other schemes, like the Ngaruroro, to follow," said Federated Farmers Hawke's Bay president Will Foley.