Gwydir Regulated River Water Availability – Current status & Resource Management & Allocations allocation update NSW Murrumbidgee regulated water sources Department of Planning, Industry and Environment Water by Priyantha Jayakody 28 November 2019
This Talk Inflow Climate Status of current water resources Transmission losses Water availability outlook Page 2
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Murrumbidgee System Inflows (1968-2019) (Excluding Snowy Scheme Transfers) Worst 5 years from 1890 Water Inflow Volume Year (GL) Rank 2006/07 257 1 2018/19 501 2 2008/09 552 3 2007/08 595 4 1982/83 681 5 2019/20 340 ? Page 4
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NSW Water Allocation - Approach Government assumes an extremely dry outlook • Low risk Requirements codified in Water Sharing Plan • Priority of access to water (towns, domestic, stock, …) • End of system flow requirements • Planned Environmental allowances Annual accounting (July - June) Page 6
NSW Water Allocation - Approach Page 7
Allocation update as of 15 November 2019 Page 8
Total inflow =474 GL Snowy BJ BL 25 GL 25 GL 869 340 Operational requirement = 475 Wagga MI Current commitments Carryover, IVT, EWA Account/s, TWS, Domestic & Stock, High Security ,Conveyancing CI Balranald Darlot Total commitment=1023 Page 9 EOS=74 GL
Resource Distribution 15 November 2019 Volume GL Volume GL Total resources 1848 Less Total operational requirements 475 Current commitments 1023 Equals Water available 350 Less Water being set aside for next year’s high 350 priority needs (Towns, D&S, HS, Conveyance). Page 10
Murrumbidgee resource distribution 2019-20 – 15 November 2019 e-water 28 GL e-water 40* GL Supply Distribution (10) consumptive use 85 GL consumptive use 112 GL Total Carryover Minimum inflows Rules-based 152 GL 474 GL Env water 120 GL Total GS 2020/21 High priority 265 GL needs 350 GL Usage to-date 165 GL Conveyance 265 GL Total = 1848 GL IVT account 24 GL Blowering Dam 869 GL Losses High Security 352 GL 348 GL (95%) *Indicative breakdown of held environmental water holdings (OEH, TLM, CEWH), refer to note 9. Burrinjuck Dam 340 GL Reserves Towns, S&D Total = 1848 GL 50 GL 74 GL https://www.industry.nsw.gov.au/water/allocations- availability/allocations/statements Page 11
Do we have enough water for next water year ? • S&D and TWS • High security • Conveyance • General Security C/O • New general security allocation Page 12
Forecast General Security allocation (per cent) – using dry tercile Tercile inflow data 1/3 1/3 1/3 Highest Lowest Ranked inflow data from 1890 to 2018 Page 13
Main river transmission losses Page 14
Rainfall — the chance of above median for December to February Page 15
Rainfall — the chance of above median for January to March Page 16
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2020-21 Outlook Based on Minimum inflows, and expected water from Snowy, all the essential supply requirements are secured for the water year 2020/21 If transmission losses higher than expected, then there could be small shortfall in resources These shortfall are generally recovered through winter rains Page 19
Updates on WRP and WSPs Murray , Murrumbidgee, and Lower Darling Submission of redrafted WRPs (including rewritten regulated WSPs and amended unregulated WSPs) to MDBA – December 2019. These incorporate many elements of public submissions from all valleys. Murray-Lower Darling and Murrumbidgee stakeholder (SAP) meetings – Early next year Finalised WRPs and gazettal of rewritten regulated WSPs – Next year Page 20
Trade 94.2 GL to Murray Page 21
Water Prices - Murrumbidgee Page 22
Water Prices - Murray Page 23
Thank you Any feedback : water.allocations@dpi.nsw.gov.au
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