A legal challenge to last month's High Court decision over the Ruataniwha dam seems unlikely after four of five parties involved in the case said they would not seek leave to appeal to the Supreme Court.
The High Court last month upheld a challenge brought by three environmental groups against the findings of a board of inquiry which granted consent to Hawke's Bay Regional Council's investment arm, Hawke's Bay Regional Investment Company (HBRIC), to build the Ruataniwha water storage scheme in Central Hawke's Bay.
The court also upheld a challenge to a related change to the regional resource management, known as Plan Change 6.
In his ruling, Justice David Collins sent the matter back to the board of inquiry for further consideration.
Parties involved in the case had until Friday this week to seek leave to appeal the decision to the Supreme Court.