The Otematata Village People Reunion organising committee has presented the Otago Rescue Helicopter Trust with $11,000 raised at the March reunion.
Trust manager Ken Franklin said the Otematata community's support was ''extremely generous''.
''It's a stunning, significant amount and it makes a huge difference,'' he said.
The Otago Regional Rescue Helicopter was a lifeline for Waitaki Valley residents, reunion committee member John Berry, said.
About 400 people attended the reunion.