Aims and benefits
Connections Project aims and objectives
- Assist irrigation communities in the Goulburn Murray Irrigation District to adapt to reduced water availability and build a sustainable future for productive agriculture.
- Provide services that meet customer needs for flow rates and timing, and are adaptable to meet changes in customer needs.
- Enhance the environment locally and across the Murray Darling Basin
- Create water savings for environmental use across the Basin (ie. deliver 204GL of water savings)
- Create local environmental benefit by implementing environmental improvement projects (eg. Lowering Little Murray Weir, Kerang Lakes, mitigation water and local environmental flows).
High level principles
- The project will work productively with communities to implement the project.
- Provision of connections solutions will be prioritised on the basis of their ability to deliver value for money water savings.
- Where the value for money water savings criteria is met, priority will be given to connections that support food and fibre productions, regional development, jobs and growth.
- Connections standard will be proportional to the needs of the user and fit for purpose.
- Where a user seeks a higher standard of service, the user will have to contribute to the cost.
- Where urban supply is available to non-commercial users, the continuing requirement for both urban and irrigation supply will need to be justified.
- GMW will honour executed landowner agreements that are consistent with these principles or where contractual obligations exist. Contractual arrangements can be withdrawn where mutual agreement has been reached with the landowner.
- Statutory tools may be enacted when an agreement cannot be reached in a reasonable timeframe.
- Seek to ensure GMW’s cost recovery meets operational and whole of life cost needs for the water delivery system.
The Connections Project is the largest irrigation modernisation project in Australia. We are investing more than $2 billion to create a sustainable future for productive agriculture in Northern Victoria.
We know this is a legacy project that will ensure the future prosperity of the region for generations to come.
The Project has been undergoing a reset to enable everyone to access water through a connection that is equivalent to their current annual water use.
Benefits for our farmers
- 24/7 water ordering during the irrigation season
- Reliable service delivery
- Fit-for-purpose infrastructure
Benefits for our communities
- Increased investment and confidence in the agricultural sector
- Creation of hundreds of jobs for regional contractors and businesses
- A significant contribution to Victoria’s Murray Darling Basin Plan commitments
Benefits for our future
- Supporting some of Australia’s most innovative farmers to leverage smarter on farm irrigation systems and technology, by delivering water more efficiently to the farm gate
- Creating a modernised irrigation system to benefit future generations
- Healthier waterways due to increased environmental river flows and a range of initiatives to enhance our environment
Ten years ago, northern Victoria was struggling through the crippling millennium drought.
In 2006, inflows into Goulburn-Murray Water’s (GMW) storages hit an all-time low. Just 200 GL of water flowed into Lake Eildon – the key storage supplying irrigators on the Goulburn system – in this year.
GMW’s ageing infrastructure was inefficient. When the full water allocation could be suppled, an estimated 900GL of water was wasted each year to leakage, seepage and evaporation. In 2008 the Victorian Government committed $1 billion in funding to the Northern Victorian Irrigation Renewal Project (NVIRP) to ensure a once-in-a-lifetime upgrade of the irrigation infrastructure in the Goulburn-Murray Irrigation District (GMID).
The upgrade would secure annual water savings of 225GL per annum which would be shared equally between local farmers, Melbourne Water and the environment. On October 18, 2011 the Victorian and Commonwealth governments signed the contract for Stage 2 of the project (then NVIRP2). As part of the agreement the Federal Government announced it would provide $953M and the Victorian Government $106M.
The project would generate an additional 204GL of annual water savings, to be split equally between the funders. On this day it was also announced Victoria would sell its 102GL of water savings to the Commonwealth. The proceeds from this sale would be used to fund Victorian irrigators’ contribution to Stage 1 of the project, meaning irrigators would not have to face price rises to cover their share.
When the business case was written there were a number of assumptions made. Because of the drought conditions the project funding assumed about 3,000 landowners would no longer want to be part of irrigated agriculture and would terminate 45 per cent of delivery share in the GMID. But four years later things were changing. The drought was over and the project would soon be integrated into GMW. In 2010, GMW recorded 1944 GL of inflows into Lake Eildon.
This was followed by strong inflows from 2011 to 2014. Farmers received 100 per cent of their water allocation during these years. The change in weather, combined with solid market conditions meant farmers wanted to be part of irrigated agriculture in the GMID.
Farmers want to be part of the world class irrigation network the $2 billion Connections Project is creating. Farming businesses are seeing the benefits of being connected to the automated water delivery system driving improved productivity. For the environment, the project delivers water savings generated through irrigation upgrades not water buy-backs.
It’s a key part of Victoria’s contribution to the Murray Darling Basin Plan. The water savings are provided to Environmental Water Holders who protect and improve our waterway health to support fish, vegetation and water quality. When the project is complete – and the channels that waste water through leakage, seepage and evaporation are upgraded or rationalised – it’s estimated an average annual water savings of 429GL will be achieved and irrigation water use efficiency will be increased from about 70 per cent to at least 85 per cent.
The Connections Project is one of the largest infrastructure projects in the country. It creates hundreds of jobs for local contractors, designers, manufacturers and other water related industries. The project is critical to the sustainability of our region, which this year has recorded the lowest inflows since 2006.
To move from a manually operated channel system to a fully automated irrigation delivery system, we’re creating a channel system with better measurement and management of water flows.
Automatic regulation gates are controlled by the Total Channel Control system, which was developed through research by Rubicon Systems Australia and Melbourne University.
This is implemented in many parts of the system. Flume Gates are also being installed to provide precision control and accurate flow measurement.
The gates control the flow of water onto the farm by varying their position according to upstream and downstream water levels and the farmer’s flow requirements.
This involves remodeling channel banks, piping sections of channel and lining channels with clay or plastic to minimise water lost to the system.
These works are targeted toward seepage and leakage water losses, which account for up to 45 per cent of overall losses when using an open channel system.
Electronic flow meters are being installed to provide accurate electronic flow rate and volume measurement data to the main GMW office, via a radio system in most cases.
These meters provide greater accuracy and are compliant with national metering standards, unlike the dethridge wheel.
As part of the Connections program, GMW replaces existing open channels with pipelines. These pipelines include gravity, pressurised options and in some cases a hybrid of both gravity and pressurised. The material used to date is HDPE (High Density Polyethelene) of varying wall thicknesses. Pipelines are often considered highly efficient and able to provide a high level of service.
About 70 per cent of our pipeline works are carried out during the winter works period each year.