The Ruataniwha dam could be "put on ice" pending a legal challenge if strict environmental controls proposed for the Tukituki catchment are confirmed by a board of inquiry.
The same environmental controls could have a big impact on major primary sector employers in Hawke's Bay, and cost the region jobs, the regional council was told yesterday.
A new environmental regime - setting limits on nutrient levels and river flows in the Tukituki catchment - is part of a draft decision handed down by the board of inquiry that considered the consent application for the $275 million Ruataniwha dam and irrigation scheme for Central Hawke's Bay.
The regime, known as Plan Change 6, has alarmed the council, which says it will have a significant economic impact on the region because the environmental restrictions it imposes will limit farming and growing activities in the catchment.
A report considered by the regional council's regional planning committee yesterday said Plan Change 6 could result in a $50 million annual loss in regional gross domestic product and add millions of dollars to costs for farmers and the council.