The Murray Darling Basin plan has been a disaster for regional communities. Overwhelming complexity, water being flushed out to sea and bureaucrats thinking they know better than everyone else have caused enormous damage.
Despite the evidence, the government and MDBA refuse to take responsibility for the mess they’ve made.
MDBA questioning part 2: https://www.malcolmrobertsqld.com.au/why-did-the-government-vote-against-a-water-trading-register-mdba-part-2/
MDBA questioning part 3: https://www.malcolmrobertsqld.com.au/farmers-always-left-high-and-dry-by-water-allocations-mdba-part-3/
Transcript
CHAIR: Alright; thank you. Senator Roberts, over to you.
Senator Roberts: Mr Taylor, I’d like to reference an exchange we had at a previous estimates regarding Menindee Lakes. I’ll quote from Hansard. I said:
So, Menindee Lakes is a vital component of the Murray-Darling Basin Plan?
You said:
It’s a vital component of our environmental management of the system.
Then I said:
And it’ll stay there.
You said:
And we’re actually getting those golden perch out of that system, connected through the Great Darling Anabranch, down into the Murray and distributing those fish. They become callop, as they’re called in South Australia, and they travel thousands of kilometres over their life. So, this is a critical part of what we’re doing.
That was not an answer to my question. You dodged my question, so let me try again. Will the Murray-Darling Basin Authority keep the Menindee Lakes as an environmentally important wetland having the same area as it currently has, including water storage with the current capacity, with the level, of course, decided by basin inflows? This is Queensland water, and we’d like to see it used properly.
Mr Taylor : Not sure I’m in a position to answer on behalf of the Murray-Darling Basin Authority in terms of feature plans and management. I think the other thing is that the Menindee system is a jointly managed lake and water resource, jointly managed between New South Wales, the Commonwealth, South Australia and Victoria. So I’m not in a position to talk about—
Senator Roberts: Is anyone from the Murray-Darling Basin Authority who could answer that question here?
Ms Connell : Mr Reynolds.
Senator Roberts: Will Menindee stay as it is, a vital part of the environment?
Mr Reynolds : As discussed earlier, New South Wales is scoping, or rescoping, the Menindee project, now called the Better Baaka project. That anticipates changes to the Menindee infrastructure and the operating rules for it. As departmental colleagues explained earlier, we’re yet to have a scope of that project brought forward by the New South Wales government. I can’t give you the assurance that you’ve asked for because that rescope project will inevitably change arrangements at Menindee Lakes. I think the proposal for the project is to look at how things can be done differently. If the project proceeds, then I think the circumstance at Menindee will be different to what they’ve been in the past.
Senator Roberts: So you can’t give me—
Ms Connell : It will continue to be subject to water resource plans and water sharing plans which will contain requirements in relation to environmental measures and environmental outcomes.
Mr Reynolds : Absolutely. The project in terms of its development will have to consider environmental impacts and benefits that can be achieved ultimately, but, until we see the scope of the works, I can’t advise on what the changes on the Menindee arrangements would be.
Senator Roberts: Setting aside the sustainable diversion limit acquisitions currently underway, how much water is still required to complete the sustainable diversion limit acquisitions? I’d like a figure. Secondly, how much is required to complete water acquisition, the baseline diversion limits?
Ms Connell : We addressed some of those questions this morning. The 605 sustainable diversion limit adjustment measure program is made up of about 36 projects for which a gigalitre component was identified when those projects were conceived. The Murray-Darling Basin Authority will go through a process we refer to as reconciliation in the lead-up to 1 July 2024, and I’ll let Mr Reynolds talk you through that.
Senator Roberts: Okay.
Ms Connell : Earlier this morning we provided an update on progress towards the 450 in terms of current entitlement holdings that are with the Commonwealth Environmental Water Holder, projects that are contracted and projects we are in discussions with states over.
Mr Reynolds : In terms of the sustainable diversion limit adjustment mechanism reconciliation process, the authority is required to take a decision in December 2023 as to whether or not a reconciliation is required. That decision can’t be taken earlier than that, because states are able to advise notifications to modifications of projects up until that point in time. So we won’t have clarity about what the package of works looks like until that point in time. If, on the basis of our understanding of the projects, their progress and the condition they’re likely to be in in June 2024, the authority determines that the adjustment amount is likely to be different than what was determined in the original decision, we will undertake a reconciliation. We will assess the projects as they are notified at the end of December 2023 and make an assessment of the volume of water, or the offset that they will achieve at that point in time.
Senator Roberts: You have a document on the website of the Murray-Darling Basin Authority entitled ‘Progress on Water Recovery’. Under the heading ‘Summary of surface water recovery progress’ it states:
Following the amendments to the Basin Plan, the overall target for water recovery is 2,075 GL/y plus 450 GL/y of efficiency measures by 2024.
That’s 2,525 in total. And then, on the third page, under the heading ‘Total water recovery still required’ it is just 46 gigalitres.
Ms Connell : We addressed those figures earlier this morning as well. The gap bridging target under the Basin Plan is 2,075 gigalitres—2,100, and I think five gigalitres have been recovered and are held by way of entitlements with the Commonwealth Environmental Water Holder. So 98 per cent of the target has been reached, but there remain about 46 gigalitres across the basin that need to be recovered from different water resource plan areas.
Senator Roberts: The other comment Mr Reynolds has already covered, so thank you for that. Before I move on, how much water is required to complete the baseline diversion limits, the up-water?
Ms Connell : I guess there are three overall programs. There’s the water recovery target of 2,075 gigalitres, so there’s 46 gigalitres still to go there. Then there is the 450 up-water program, as it is known, which I referred to earlier in terms of what’s being delivered, what’s contracted and discussions we’re having with states. Then the third program is the 605 sustainable diversion limit adjustment mechanism program, which Mr Reynolds was discussing in terms of the reconciliation process that happens in 2024. There are 36 projects which go to make up that program of work that South Australia, Victoria and New South Wales have to deliver, and the authority will look at that program of works at the end of next year to determine whether reconciliation needs to happen to identify whether the 605 will be met or what component of it will be met.
Senator Roberts: As I’ve discussed before with Mr Glyde and Mr Reynolds and also the previous water commissioner, it’s a very complex issue, isn’t it? The whole thing is very complex, with many variables and a lot of variation.
Ms Connell : There are some key, major complex areas of work. The Basin Plan is a significant water reform, and there are some complex components, as you would expect in a system, I think, where there are 20 surface water areas and about 13 groundwater systems.
Senator Roberts: Then we have a naturally variable climate. The north varies considerably, in a different way from the south. So I would raise that for the future. Turning to the south-east drains SDL acquisition, Mr Reynolds, a reminder of your answer at the last estimates:
The water from the south-east drains has been put forward by the South Australian government as an SDL adjustment mechanism project. So the water that comes from the south-east drains into the southern lagoon will be accounted for through that process.
That means it will be counted as SDL. How much water is the Murray-Darling Basin Authority counting against the remaining SDL target for the south-east drains restoration flow?
Mr Reynolds : As we’ve explained previously, the assignment of individual volumes to projects in terms of the adjustment mechanism can only be an estimate, because the whole package of projects is modelled as a whole, and they interact with one another. We have made a range of estimates against individual projects. I will see if I can get the number for that particular project. I don’t think I have it in my papers here. I will have to get someone to provide that to me, but I will provide it this morning.
Senator Roberts: I would be very interested to see that number. I’m wondering if we’ve just found some more water.
Mr Reynolds : Well, the south-east drains project is part of the adjustment mechanism, so it’s been accounted for.
Senator Roberts: It is my view that this is a significant unaccountable flow—it hasn’t been to date—and may provide a substantial part of the remaining SDL acquisition that can both take the pressure off farmers elsewhere in the basin while restoring the amazing Coorong wetland and moderating extreme salination in Lake Albert by flushing from the south-east, not from the north-west; from the north-west is not really flushing. Have you the south-east inflows? I think the answer was ‘no’ in the last Senate estimates in October. Have you modelled the south-east inflows, both aquifer and surface flow? How much water is available? How much can be redirected—and this is really important—without interfering with agricultural production?
Mr Reynolds : We haven’t modelled that directly. The South Australian government manages that part of the system. We have consulted with them about the volumes. There’s not a direct estimate available of the total flow from the south-east drains, including through the groundwater systems into the Coorong. The operation of the south-east drains does provide water back to the southern lagoon in the Coorong, and that scheme has been developed and the operating rules have been developed to achieve that. There are requirements to manage the flows through the south-east drains. It is drainage from agricultural land. It does carry a nutrient load. There are particular management challenges with that water. So part of the south-east drainage scheme passes water through wetlands and the like to remove nutrient loads from that water before it enters the Coorong. If that’s not done, there are undesirable ecological impacts in the Coorong itself. That limits somewhat the volume of water that comes from the south-east drains. The South Australian government is continuing to work through those issues.
Senator Roberts: As I understand it, the drains are made by humans? They’re not natural and they take up a significant quantity of water, straight to the ocean.
Mr Reynolds : The area that’s been drained naturally was a low-lying marshy area, and water tended to lie in that area. Some of it would have seeped through groundwater systems to the sea. Some of it would have made its way to the Coorong. The drains are man-made structures that have taken water from that area and dried it out and made it more productive as an agricultural area.
Senator Roberts: I’ve been there and seen those drains. They’re definitely man-made. There is a belief that there’s a significant amount of water to be recaptured and sent to the Coorong.
Mr Reynolds : And water is being captured through that system and does flow to the Coorong. I think from memory it’s in the order of 26 gigalitres, on average. Obviously it would change with seasonal conditions. In wet years it will be more; in drier years it would be less. But it’s of that order.
Senator Roberts: My understanding is there’s a lot more water to be captured than that.
Mr Reynolds : I think the South Australian government clearly has an interest in trying to improve the health of the Coorong. They’ve undertaken an enormous amount of work in that region to do that. I’m sure they’re examining whether or not it would be beneficial to take more water from that region if it’s possible to do so, for that purpose.
Senator Roberts: So the Coorong problem has been man-made, not by the rest of the basin, but by diversion of water that used to go through the Coorong straight to the ocean? I’m not being critical, because in those days they were trying to look after their narrow scope. That’s something that, to return the environment to its natural state, would require a lot of water to go back to the Coorong and keep it clean.
Mr Reynolds : There are obviously significant volumes of water diverted from the basin, which has reduced the volume of water that reaches the end of the system, particularly coming down the Murray. Part of the challenge is to address some of those issues. To get back to the natural balance of what happened in the Coorong before river regulation would require all of the water that’s subsequently been diverted to be returned to the environment. No-one is proposing to do that. We’re looking for alternative solutions and alternative balances.
Senator Roberts: Shouldn’t that south-east portion be counted as part of the basin? You just said water is diverted from the basin, but it’s not included in the basin yet?
Mr Reynolds : I’m sorry; when I said that I meant water is diverted from upstream right across the basin. Very significant volumes are diverted.
Senator Roberts: This water’s going straight to the ocean, and doing damage by not going through the Coorong.
Mr Reynolds : I think the benefits that can be provided to the Coorong, by diverting some water from the south-east drains, are being realised through the project that’s been implemented. I’m sure the South Australian government and others will continue to examine where additional benefits might be able to be accrued. Significant money from the Commonwealth government has gone to the Goyder Institute. I think $8 million has been committed to examine options and other interventions that might be possible around the Coorong, Lower Lakes and the Murray Mouth. That could include activities within the south-east drain system, although that has been explored fairly extensively already.
Senator Roberts: It’s very complex, and it’s made even more complicated by the politics involved at the state and federal levels. We will end it there for now.
CHAIR: Senator Roberts, I’m sorry to interrupt you, but could you make this your last question? Sorry, Senator Roberts! We knew what was going on.
Senator Ruston :They don’t look anything alike.
CHAIR: They don’t.
Senator Roberts: I don’t know who you’re insulting the most. That was my last question.
CHAIR: Make this your last question, Senator Roberts.
Senator Roberts: Concerning Lock Zero, in the last estimates, you spoke about engineering challenges and other issues, and you said, ‘Lock Zero was examined in some detail.’ If salt water is used in the Lower Lakes to protect against sulphur emissions—and that would be a one-in-100-year type drought; it’s an absolute last resort—then suddenly we will be wishing we’d built Lock Zero, won’t we? Doesn’t the Murray-Darling Basin Authority or the department have documentation on Lock Zero? Your comment ‘examined in some detail’ suggests such documentation exists. It seems like too significant a project not to have some formal process underway.
Mr Reynolds : During the millennium drought, Lock Zero was considered as to whether or not it would be an arrangement that would help protect the Lower Lakes. Part of that was looking at what flow would be required past Lock Zero to ensure that the Lower Lakes retained their ecological character. There is significant concern that if the flow of fresh water to the Lower Lakes was terminated, and if just sea water was allowed in, that would progressively concentrate through evaporation and become hypersaline, and so the Lower Lakes would not be a natural estuary.
Senator Roberts: It’s not natural at the moment, with the barrage, is it?
Mr Reynolds : No, but the Lower Lakes naturally would have had a much larger volume of fresh water flowing to the Lower Lakes, to the end of the system. We take a lot of water out upstream for irrigation and other productive purposes, and so the natural balance of mixing of fresh and salt water at the Lower Lakes cannot be reinstated unless there’s a lot more water coming down the river system. Building Lock Zero does not alleviate that issue.
Senator Roberts: We’ll leave it there for now.
