Current and upcoming water for the environment deliveries….
Releases are dependent on many factors, and can often change, so it is important to keep up to date by checking back here regularly for the most current information.
Carran Carran (Thomson River)
The following flow has been scheduled for Carran Carran (Thomson River). The purpose of this release is to provide a migration flow cue for native migratory fish species, and to provide a top-up to Heyfield Wetlands.
Delivery type – Spring Fresh and Heyfield Wetlands
Start date: Monday 27 October 2025
End date: Wednesday 19 November 2025
Maximum flow rate: 800 megalitres per day for 7 days (~0.6 m at Coopers Creek)
Peak flow dates: Monday 3 November 2025 to Sunday 9 November 2025.
Carran Carran (Thomson River) flows from the slopes of the Baw Baw Plateau to join Durt-Yowan (Latrobe River) south of Sale. The major tributaries of the Carran Carran (Thomson River) are the Aberfeldy and Jordan rivers in the upper reaches and Wirn wirndook Yeerung (Macalister River) in the lowest reach.
Two major structures regulate flow on the Carran Carran (Thomson River):
- Thomson Reservoir – the largest water supply storage for metropolitan Melbourne
- Cowwarr Weir – a regulating structure that supplies irrigation water to parts of the Macalister Irrigation District.
Previous environmental water deliveries in the Gippsland region, can be found here.
Page updated 21 October 2025
Durt’Yowan (Latrobe River) & Tanjil River
This system has no current or scheduled water for the environment releases.
Previous environmental water deliveries in the Gippsland region, can be found here.
Page updated 12 August 2025
Wirn wirndook Yeerung (Macalister River)
This system has no current or scheduled water for the environment releases.
Previous environmental water deliveries in the Gippsland region, can be found here.
Page updated 12 September 2025
