Primary responsibility for civil defence emergency management at a local level rests with your local council.
A list of civil defence groups and locations can be found here.
Civil defence updates can be found here.
New Zealand Civil Defence twitter feed can be found here.
Northland Civil Defence: http://www.nrc.govt.nz/civildefence/
Auckland Civil Defence: http://www.aucklandcivildefence.org.nz/
Bay of Plenty Civil Defence: http://www.bopcivildefence.govt.nz/
Hawke's Bay Civil Defence: http://www.cdemhawkesbay.govt.nz/
Gisborne Civil Defence: http://www.gdc.govt.nz/civil-defence/
Taranaki Civil Defence: http://cdemtaranaki.govt.nz/
Wellington Civil Defence: http://www.getprepared.org.nz/
Nelson Civil Defence: http://nelsontasmancivildefence.co.nz/
Marlborough Civil Defence: http://www.marlborough.govt.nz/Services/Emergency-Management/Civil-Defence.aspx
Canterbury Civil Defence: http://cdemcanterbury.govt.nz/
Otago Civil Defence: http://www.otagocdem.govt.nz/index.php/cdem-group-home/
The wishing tree appeal is in its 31st year and the need for it 'has never been greater'.