We plan to complete our annual submerged weed control treatment in irrigation channels across the Macalister Irrigation District in November and December 2026.
Spring and early summer is the most effective time to manage submerged weeds because they are at their most vigorous at this time of year.
Removing submerged weeds ensures our irrigation channels are operating at maximum capacity and can deliver water to you as efficiently as possible.
We will be treating submerged weeds with a product called Magnacide H. This product is registered by the Australian Pesticides and Veterinary Medicines Authority and is used widely by water corporations in water channels across Australia.
Our trained team will be working with an expert contractor to treat irrigation channels under strict controls and monitoring protocols.
The treatments are planned to occur in the following areas:
| Treatment Areas | |||
|---|---|---|---|
| Date | Channel | From | To |
| Mon 30 November 2026 | Main Northern | Three Chain Road, Newry | Brewers Hill Road, Maffra |
| Tues 1 December 2026 | Main Northern | Clynes Rd, Tinamba | Heyfield/Upper Maffra Road, Tinamba |
| Tues 1 December 2026 | Nambrok Denison 1 | Swamp Road, Nambrok | Sale Heyfield Road, Nambrok |
| Tues 1 December 2026 | Nambrok Denison 15/1 | Swamp Road, Nambrok | Velore Road, Nambrok |
| Wed 2 December 2026 | Main Sale | Kynes Road, Bundalaguah | Cobain’s Estate Road, East Sale |
| Wed 2 December 2026 | Main Heart | Dawson Street, Sale | Aerodrome Road, Sale |
| Wed 2 December 2026 | Heart ½ & 1½ | Aerodrome Road, Sale | Lower Heart Road, Sale |
Important Information
- Do not allow stock or pets access to treated water for 72 hours after the treatment has ceased.
- Ensure no human contact during this period.
- No orders will be delivered in this period.
- Please schedule orders around this shutdown.
Notification of Changes
If the scheduled weed treatment cannot proceed as planned due to high demand for irrigation water, weather conditions, or other unforeseen circumstances, impacted customers will receive an SMS notification advising of the change.
Additionally, an update will be posted on Waterline where revised treatment dates and further information can be found on our website.
We may have to re-treat some areas later in the season and will notify impacted customers.
We encourage you to check our website and Waterline regularly to stay informed of any updates to the treatment spraying schedule.