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
  • 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

Lake Ōkataina

Control SiteScheduled date of control:Actual date of treatment: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:
Boatshed Bay Ramp14/04/202114/04/2021Yes16/04/2021Yes16/04/2021Yes16/04/2021
Stoney Point Ramp14/04/202114/04/2021Yes16/04/2021Yes16/04/2021Yes16/04/2021
Te Karamea Bay14/04/202114/04/2021Yes16/04/2021Yes16/04/2021Yes16/04/2021
Wairua Stream Mouth14/04/202114/04/2021Yes16/04/2021Yes16/04/2021Yes16/04/2021
Otumutu Lagoon/Humphries Bay14/04/202114/04/2021Yes16/04/2021Yes16/04/2021Yes16/04/2021
Kaikākahi Bay14/04/202114/04/2021Yes16/04/2021Yes16/04/2021Yes16/04/2021
Ngāhauā Bay07/04/202107/04/2021Yes08/04/2021Yes10/04/2021Yes02/05/2021

Lake Ōkareka

Control SiteScheduled date of control:Actual date of treatment: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:
Acacia Bay14/04/202114/04/2021Yes16/04/2021Yes16/04/2021Yes16/04/2021
DOC Camp Beach29/04/202129/04/2021Yes30/04/2021Yes30/04/2021Yes30/04/2021
Bird Walkway Bay08/04/202109/04/2021Yes10/04/2021Yes10/04/2021Yes10/04/2021

Lake Rotoiti

Control SiteScheduled date of control:Actual date of treatment: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:
Ōtaramarae Bay Boat Ramp20/04/202120/04/2021Yes21/04/2021Yes21/04/2021Yes21/04/2021
Whangamoa Drive22/04/202122/04/2021Yes23/04/2021Yes23/04/2021Yes23/04/2021
Te Ti Bay20/04/202120/04/2021Yes21/04/2021Yes21/04/2021Yes21/04/2021
Te Ārero Bay20/04/202120/04/2021Yes21/04/2021Yes21/04/2021Yes21/04/2021
Tokerau Bay20/04/202120/04/2021Yes21/04/2021Yes21/04/2021Yes21/04/2021
Gisborne Point19/04/202119/04/2021Yes20/04/2021Yes20/04/2021Yes20/04/2021
Te Waiiti Point19/04/202119/04/2021No20/04/2021No20/04/2021No20/04/2021
Te Ruato Bay19/04/202119/04/2021Yes20/04/2021Yes20/04/2021Yes20/04/2021
Hauparu Bay19/04/202119/04/2021Yes20/04/2021Yes20/04/2021Yes20/04/2021
Tapuaekura Bay19/04/202119/04/2021Yes20/04/2021Yes20/04/2021Yes20/04/2021
Ōkahutoroa Bay/Cherry Bay19/04/202119/04/2021Yes20/04/2021Yes20/04/2021Yes20/04/2021
Ōkawa Bay22/04/202122/04/2021Yes23/04/2021Yes23/04/2021Yes23/04/2021
Te Weta Bay22/04/202122/04/2021Yes23/04/2021Yes23/04/2021Yes 23/04/2021

Lake Rotorua

Control SiteScheduled date of control:Actual date of treatment: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:
Kawaha Point15/04/202115/04/2021Yes16/04/2021Yes16/04/2021Yes16/04/2021

Lake Tarawera

Control SiteScheduled date of control:Actual date of treatment: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:
Boatshed Bay Ramp16/04/202116/04/2021Yes17/04/2021Yes17/04/2021Yes17/04/2021
Stoney Point Ramp16/04/202116/04/2021Yes17/04/2021Yes17/04/2021Yes17/04/2021
Te Karamea Bay16/04/202116/04/2021Yes17/04/2021Yes17/04/2021Yes17/04/2021
Wairua Bay16/04/202116/04/2021Yes17/04/2021Yes17/04/2021Yes17/04/2021
Otumutu Lagoon / Humphries Bay16/04/202116/04/2021Yes17/04/2021Yes17/04/2021Yes17/04/2021

Lake Benmore

Control SiteScheduled date of control:Actual date of treatment: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:
The Neck28.05.202128.05.2021Yes29.05.2021Yes29.05.2021Yes29.05.2021
Sailors Cutting28.05.202128.05.2021Yes29.05.2021Yes29.05.2021Yes29.05.2021
Last Updated: 28 May 2021