After the demise of the Hauraki Gulf Maritime Park Board in July 1990, the Auckland City Council was again the designated administering body, and passed back the responsibility for management to the Department of Conservation.
Nachdem das Hauraki Gulf Maritime Park Board im Juli 1990 seine Arbeit beendete, übernahm der Auckland City Council erneut die Verwaltung und übertrug diese dann zurück an das Department of Conservation.