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.
We publish tables below with detailed information about recent aquatic weed control work. You can find more information about all our biosecurity programmes on the page Biosecurity control work.
Operational spray plans
Lakeweed spraying public notification protocols
Lake Benmore
No upcoming control works currently scheduled.
Lake Dunstan
| Control site | Scheduled date of control | Actual date of treatment | Safe to swim at, gather food from, or take water for irrigation or domestic purposes? |
|---|---|---|---|
| Annan Inlet | Postponed | Postponed | Yes - as of 4 April 2024 |
| Bannockburn Inlet | Postponed | Postponed | Yes - as of 4 April 2024 |
| Bendigo Boat Ramp & Approaches | Postponed | Postponed | Yes - as of 4 April 2024 |
| Champagne Gully Ramp & Ski Lane | Postponed | Postponed | Yes - as of 4 April 2024 |
| Cromwell Swimming Beach | Postponed | Postponed | Yes - as of 4 April 2024 |
| Dairy Creek | Postponed | Postponed | Yes - as of 4 April 2024 |
| Jacksons | Postponed | Postponed | Yes - as of 4 April 2024 |
| Lowburn Boat Harbour | Postponed | Postponed | Yes - as of 4 April 2024 |
| Lowburn Inlet | Postponed | Postponed | Yes - as of 4 April 2024 |
| McNulty's Inlet | Postponed | Postponed | Yes - as of 4 April 2024 |
| Northburn Ski Lane | Postponed | Postponed | Yes - as of 4 April 2024 |
| Old Cromwell Town & Boat Ramps | Postponed | Postponed | Yes - as of 4 April 2024 |
| Weatherall Creek and Burton Creek | Postponed | Postponed | Yes - as of 4 April 2024 |
| Pisa Mooring | Postponed | Postponed | Yes - as of 4 April 2024 |
Lake Karapiro
No upcoming control works currently scheduled.
Lake Wānaka
| Control site | Scheduled date of control | Actual date of treatment | Safe to swim at, gather food from, or take water for irrigation or domestic purposes? |
|---|---|---|---|
| Glendhu Bay | Postponed | Postponed | Yes - as of 4 April 2024 |
| Glendhu Bluff Bay | Postponed | Postponed | Yes - as of 4 April 2024 |
| Parkins Bay | Postponed | Postponed | Yes - as of 4 April 2024 |
| Paddock Bay | Postponed | Postponed | Yes - as of 4 April 2024 |
| Fern Burn | Postponed | Postponed | Yes - as of 4 April 2024 |
| Sandspit Point | Postponed | Postponed | Yes - as of 4 April 2024 |
| Quartz Creek | Postponed | Postponed | Yes - as of 4 April 2024 |
| Eely Point | Postponed | Postponed | Yes - as of 4 April 2024 |
| Roys Bay Boat Ramp, Jetty, and marina | Postponed | Postponed | Yes - as of 4 April 2024 |
| Roys Bay | Postponed | Postponed | Yes - as of 4 April 2024 |
Kawarau River
| Control site | Scheduled date of control | Actual date of treatment | Safe to swim at, gather food from, or take water for irrigation or domestic purposes? |
|---|---|---|---|
| Kawarau Falls Bridge to the Shotover River confluence | 12 April 2024 | 12 April 2024 | Yes - as of 14 April 2024 |