Find out about current and upcoming weed and pest control work

Effective pest management depends on collaboration. We consult with a range of interested groups when planning control programmes, including neighbouring landowners, district and regional councils, iwi, advocacy groups, and the local community.

Before undertaking any control work, we notify the public by:

  • putting up signs near the affected area
  • publishing notices in local newspapers
  • broadcasting notices local radio
  • posting information on this website.

Most of our control work is weather dependent, so advertised dates may change at short notice. We try to avoid carrying out any spraying on weekends or during public holidays.

The table below provides detailed information about our aquatic weed control work. You can find more information about all our biosecurity programmes in the related content.

Aquatic weed control status for lakes in New Zealand

Control SiteScheduled date of control:Treatment was completed on:Is this site safe to swim at  today?Date site is safe to swim at from:Is this site safe to gather food from today?Date site is safe to gather food from:Is this site safe to take water for irrigation or domestic purposes today?Date site is safe to take water for irrigation or domestic purposes from:
Lake Karapiro        
Zone 218/03/202018/03/2020Yes19/03/2020Yes19/03/2020Yes19/03/2020
Zone 318/03/202018/03/2020Yes19/03/2020Yes19/03/2020Yes19/03/2020
Zone 418/03/202018/03/2020Yes19/03/2020Yes19/03/2020Yes19/03/2020
Zone 518/03/202018/03/2020Yes19/03/2020Yes19/03/2020Yes19/03/2020
Zone 618/03/202018/03/2020Yes19/03/2020Yes19/03/2020Yes19/03/2020
Zone 719/03/202019/03/2020Yes20/03/2020Yes20/03/2020Yes20/03/2020
Zone 819/03/202019/03/2020Yes20/03/2020Yes20/03/2020Yes20/03/2020
Zone 919/03/202019/03/2020Yes20/03/2020Yes20/03/2020Yes20/03/2020
Lake Benmore        
Ahuriri Delta and ArmTBCNAYesNAYesNAYesNA
Lake Aviemore        
Upstream Parsons RockTBCNAYesNAYesNAYesNA
Lake Wanaka        
Stevensons IslandTBCNAYesNAYesNAYesNA
Lake Dunstan        
Champagne Gully Ramp & Ski Lane 18/03/202018/03/2020Yes19/03/2020Yes19/03/2020Yes19/03/2020
Pisa Moorings 17/03/202017/03/2020Yes18/03/2020Yes18/03/2020Yes18/03/2020
Bendigo Boat Ramp & Approaches TBCNAYesNAYesNAYesNA
Lowburn Inlet 16/03/202016/03/2020Yes17/03/2020Yes17/03/2020Yes17/03/2020
Weatherall Creek and Burton Creek 18/03/202018/03/2020Yes19/03/2020Yes19/03/2020Yes19/03/2020
Old Cromwell Town & Boat Ramps TBCNAYesNAYesNAYesNA
Cromwell Swimming Beach 17/03/202017/03/2020Yes18/03/2020Yes18/03/2020Yes18/03/2020
Bannockburn Inlet 16/03/202016/03/2020Yes17/03/2020Yes17/03/2020Yes17/03/2020
McNulty's Inlet 16/03/202016/03/2020Yes17/03/2020Yes17/03/2020Yes17/03/2020
Northburn Ski Lane17/03/202017/03/2020Yes18/03/2020Yes18/03/2020Yes18/03/2020
Annan Inlet18/03/202018/03/2020Yes19/03/2020Yes19/03/2020Yes19/03/2020
Lowburn Boat Harbour16/03/202016/03/2020Yes17/03/2020Yes17/03/2020Yes17/03/2020
Kawerau River        
Kawarau Falls Bridge to Shotover River ConfluenceTBCNAYesNAYesNAYesNA
Last Updated: 25 March 2020