The Ngakawau Restoration Project is a proposed hydro scheme planned to divert acid mine drainage from coal mines to an ocean outfall to restore water quality of the Ngākawau River, in the northern section of the West Coast of the South Island of New Zealand.

[6][7] In October 2010 both parties announced that they had reached an agreement on using water from the Stockton plateau for hydro-electricity and that they would abandon their respective Environment Court appeals of the others' scheme.

[14] In November 2019 Hydro Developments (2013) Ltd (HDL) applied for its resource consents to be extended as development of the Stockton Plateau Hydro Scheme was advanced, having been submitted to The Treasury as a long-term solution for managing the government's historic (pre-2017) acid mine drainage liabilities.

A decision on the government's preferred solution is not expected until 2024 or until it is clearer when coal mining will cease.

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