Hawke's Bay Regional Investment Company says it is confident a proposed swap to free up Department of Conservation land required for the Ruataniwha dam will be approved in time to keep the project on its current schedule.
But the company - Hawke's Bay Regional Council's investment arm and the promoter of the Ruataniwha scheme - says it can not rule out the possibility of a subsequent legal challenge having an impact on the project.
Environmental group Forest & Bird is among those who have challenged plans to swap 22ha of Ruahine Forest Conservation Park land for 146ha of property owned by Smedley Station so the current park land can be flooded to create a reservoir as part of the Ruataniwha irrigation scheme.
DoC has run a public consultation process but is yet to make a final decision on the proposed land swap although it indicated late last year it believed there would be "an enhancement of conservation values if the exchange were to be effected".
Forest & Bird has challenged the department's assessment, saying there were "shortcomings" in its analysis.