By

Environmental Water

Australia is in it’s worst drought ever and every drop of water is precious, especially for farmers. They have been paying thousands for water. Places like Wallpolla Island are getting watered by the government. This year Wallpolla Island got 2 gigalitres of water.

This outrages farmers. One farmer said ‘ While farmers have to pay thousands for water, the government is using taxpayers money to buy water for trees.’ But according to a spokesperson for the Department of Sustainability and Environment the 2 gigalitres of water was left over from last year.

Wallpolla Island was already watered earlier this year. If the water was used for farmers it could assist 20-40 growers. Some peoples crops are on the verge of dying. For some their crop is supporting them and their families.

However we also need to look after the health of the river by having some evironmental watering because an unhealthy river is no good to anyone!

By

A nice drink for dying trees

For the first time in around 2 decades parts of Gol Gol Lake and Swamp are finally getting a nice drink of water. This has been provided through the NSW Government project. This flooding may be repeated every 5 years depending on certain factorsBateaux gonflables .  This environmental flooding is viewed as a vital part of keeping the trees alive.

This program has been developed by the Lower Murray Darling Catchment Authority along with Gol Gol Community Reference group, Gol Gol Creek Growers’ association, NSW Murray Wetland Working group and the Barkindji Elders Council.

Howard Jones, working group chairman said ” Unfortunately we don’t have much time left to help some of the trees there (in Gol Gol), so we need to act quickly if we are to have a positive impact.”Jeux d’eau

It is nice to see something being done for the trees, even out of Victoria.

By

Environmental Flows

By

Environmental Flows and what it means!

On Wednesday 20th June, Mr. Wise from Mallee Catchment Authority came to our school to teach us about Environmental Flows. He explained the problem with the decline in the health of River Red Gum trees along the Murray River, and how they have needed to deliver water to the trees for them to survive. The trees at Hattah were very healthy because some of the wetlands used to flood every two years. However there hasn’t been a natural flood since 2000. Lots of Red Gums are now dying because they aren’t getting water from floods and their roots are digging into the ground searching for underground water, which is getting lower and harder to find. Some groundwater is salty, and the trees are drinking too much salty water, making them sick. The River Red Gums need regular flooding to survive. If the Red Gums die out all the animals that rely on them for survival will die too and some even may become extinct.

We would like to thank Mr. Wise for coming to our school to help us learn about this topic.

Written by Rheanna and Mikaela.

By

Environmental Flows

Environmental Flows is a topic to find out some information. What do you think this is? How would you describe this?

Mr. Andy Wise from Mallee Catchment Management Authority has put together the following information to get you started. 

What does Environmental Flows mean? It is also known as Environmental Watering.

Environmental flows are any managed river flow that helps river health. Can you add to this definition or write one of your own?

Environmental Flows and the Murray-Darling Basin

The basis for all life, plants and animals, is energy from the sun, clean air, clean soil and clean water.  Eg. Breathing, plant production, meat production, our bodies are mostly made of water, and we need to drink to survive. How long do you think you could survive without food? water? air?  Air, soil, and water, are vital in themselves, but they also give rise to everything else that all life forms on earth require to survive. Eg. food, and somewhere to live. And all the materials and things we use every day come either directly from nature or are man made using materials which are found in nature. All of our food production also relies on water.   Eg. Meat, fruit and vegies, dairy products, cereals and carbohydrates. Irrigated food crops and pastures along the

Murray River help to feed the people in the cities where there is nowhere to grow food. The air, soil and water not only supports people, but all of the plants and animals. If adequate supplies of any of these are not available to the plants and animals, then their ability to survive may be jeopardised – including people. This is one reason why some species have become extinct, and others are rare and threatened. So the air, soil, and water are linked directly to our survival, and that of all plants and animals. Consider the mighty River Redgum – Eucalyptus camaldulensis. Redgums grow along water courses and around wetlands, and require occasional flooding to survive. These huge trees start from tiny seeds, which germinate under favourable conditions to become seedlings. It is tough for them to survive and if they don’t get eaten off by cattle, sheep, kangaroos or rabbits, and if they can get their roots down to fresh (not too salty) groundwater, they may survive to grow into huge trees, hundreds of years old! While they are growing, their leaves, flowers and fruits will be eaten by a variety of insects, birds like this Blue Faced Honey Eater, and some mammals such as this brush-tailed possum. Birds and Lizards will fossick for insects underneath the bark. Many waterbird and other bird species rely on the branches of Redgums for nesting places.  Redgums can take more than a hundred years to mature to the point where branches die, break off, and rot away forming hollows in the tree trunks and larger branches. Hollows of different sizes provide homes for birds, such as the endangered Regent Parrot, and animals of a wide variety of shapes and sizes eg bats, reptiles like the endangered Carpet Python, and frogs.  Why are red gums important? How do they survive when there isn’t any flooding?