Document ID: chunk:federal_register_of_legislation:F2024C00760:reg:80:p1
Version: federal_register_of_legislation:F2024C00760
Segment Type: reg
Provision Reference: reg 80 (pt 1/9)
Character Range: 578675–582275

80                            Warrego Alluvium                                                           all groundwater contained within all unconsolidated alluvial sediments below the surface of the ground                                                                                                                      0.70                                                                                                                                                                                                                         10.2
                              (GS66)

        Schedule 5—Enhanced environmental outcomes referred to in paragraph 7.09(e)
Note: See paragraph 7.09(e).
(1) The outcomes listed below are ones that will be pursued under the Commonwealth's program to increase the volume of water resources available for environmental use by 450 GL per year.
(2) The outcomes that will be pursued are:
            (a) further reducing salinity levels in the Coorong and Lower Lakes so that improved water quality contributes to the health of macroinvertebrates, fish and plants that form important parts of the food chain, for example:
                (i) maximum average daily salinity in the Coorong South Lagoon is less than 100 grams per litre; and
                (ii) maximum average daily salinity in the Coorong North Lagoon is less than 50 grams per litre; and
                (iii) average daily salinity in Lake Alexandrina is less than 1000EC for 95% of years and 1500EC all of the time;
            (b) keeping water levels in the Lower Lakes above 0.4 metres AHD for 95% of the time and above 0.0 metres AHD at all times to help maintain flows to the Coorong, prevent acidification, prevent acid drainage and prevent riverbank collapse below Lock 1;
            (c) ensuring the mouth of the River Murray is open without the need for dredging in at least 95% of years, with flows every year through the Murray Mouth Barrages;
            (d) exporting 2 million tonnes per year of salt from the Murray‑Darling Basin as a long‑term average;
            (e) increasing flows through the barrages to the Coorong and supporting more years where critical fish migrations can occur;
            (f) in conjunction with removing or easing constraints, providing opportunities for environmental watering of an additional 35,000 ha of floodplain in South Australia, New South Wales and Victoria, improving the health of forests and fish and bird habitat, improving the connection to the river, and replenishing groundwater; and
            (g) achieving enhanced in‑stream outcomes and improved connections with low to middle level floodplain and habitats adjacent to rivers in the southern Murray‑Darling Basin.
Note:  The environmental outcomes in this Schedule reflect the results of the 3200 GL per year modelling with relaxed constraints scenario reported in: MDBA (Murray‑Darling Basin Authority) 2012, Hydrologic modelling of the relaxation of operational constraints in the southern connected system: Methods and results, MDBA publication no: 76/12, Murray‑Darling Basin Authority, Canberra. http://download.mdba.gov.au/altered‑PBP/Hydrologic‑modelling‑relaxed‑constraints‑October‑2012.pdf
        Schedule 6—Default method for calculation of supply contribution
Note: See section 7.15.

        Part 1—Description

S6.01 Simplified outline
(1) This Schedule sets the default method by which the supply contribution is calculated for Chapter 7.
           Note: Section 7.15 sets out circumstances in which an alternative method may be used.
(2) The method