A Green Party conference in Napier has been told plans for the Ruataniwha water storage scheme in Central Hawkes Bay are "subsidised pollution".
The claim came yesterday from co-leader Russel Norman, at the party's North Island policy conference at Pukemokimoki Marae.
The proposed reservoir and irrigation scheme involving the damming of the Makororo River will lead to more intensive dairying by corporate farming concerns - meaning "more cows" and "more dirty rivers", Mr Norman said.
He said the Hawkes Bay Regional Council had "locked-in" the "huge" expenditure before the completion of a feasibility study looking at the need, cost and benefits, or how intensifying on such a massive scale could take place without "huge downstream environmental pollution".
Mr Norman said a "good proportion" of the water would be used to produce more milk powder off the land.