Current water releases for the environment

Spring 2019 Releases of Water for the Environment

Environmental flows in the Latrobe, Thomson and Macalister Rivers

Coordinated environmental flows are planned to be delivered in the Thomson and Macalister Rivers this spring, starting at the end of this week (November 1st 2019)

Due to flooding in September and October, environmental flows in the Latrobe River and Tanjil River will be delayed. Conditions will be monitored, and we will notify when flows are to be delivered.

What are the benefits of flows?

The objectives of these spring flows are to:

  • trigger upstream migration of native diadramous fish species (fish that migrate between salt and fresh water), eels and lamprey
  • wet the banks to improve the condition of riparian vegetation
  • maintain channel capacity and river bench habitat
  • push the salt wedge toward the mouth of the Latrobe estuary.

What will I notice?

The start and end dates, expected flow rates and estimated river heights for the water release are below.

Waterway: Thomson River
Start and end date of water release*: 31st October to 11th November, followed by low flows 12th to 30th November
Highest flow expected*: 800 megalitres per day, 3rd to 6th November at Coopers Creek
Estimated water level in river during highest flow*: 0.6m at Thomson River at Coopers Creek

Waterway: Macalister River
Start and end date of water release*: 2nd to 18th November, followed by low flows 19th to 25th November
Highest flow expected*: 700 megalitres per day, 5th to 9th November downstream of Lake Glenmaggie
Estimated water level in river during highest flow*: 0.7m Macalister River below Lake Glenmaggie

Waterway: Tanjil River and Latrobe River
Start and end date of water release: To be confirmed – late November at the earliest.

*Note: these dates and flow rates may change due to natural events or operational issues. 

These are estimates and may change slightly depending on inflows and orders from entitlement holders, and due to natural losses in these rivers and travel time of the water release. This is particularly the case for lower sections of these rivers.

There will be no impact on the security of water supply or access to irrigation water. The water release will be well below minor flood levels and will not impact on properties or assets next to these rivers.

Flows are managed based on monitoring seasonal conditions and river system conditions and using the best available science and expert knowledge.

Water the Heyfield Wetlands

The Heyfield Wetlands has received its second inflow of water this October, as part of a water for the environment initiative.

Up to 10 megalitres in total has been delivered to the wetlands over the week of 14th to 18th of October, 2019. A fill rate of up to 2.5 megalitres per day has been delivered to the western ponds, transferred from the Thomson River system, with the assistance of Gippsland Water.

This water delivery is part of a plan to provide water for the environment to the Heyfield Wetlands, with the first flow delivered in August 2019. You can learn more about the watering of the wetlands in these videos. The Wonderful Heyfield Wetlands and Heyfield Wetlands Post Watering.

You can find out more in our Seasonal Watering Plans and learn more about water for the environment on our water for the environment page.

If you would like to receive notifications of future water releases for the environment please complete this form.

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