Peel Regulated ROSCCo (River Operations Stakeholder Consultation Committee) 10 June 2020
Peel Valley Map 2 WaterNSW
Rainfall – last 24 months 3 WaterNSW
Part 1 - Overview of 2019/2020 • Rainfall and climate • Allocations and Usage • Community Consultation meetings • Completion of Drought Projects – Construction of Dungowan Temporary Weir – Construction of Chaffey to Dungowan Pipeline • Restrictions applied – https://www.waternsw.com.au/__data/assets/pdf_file/0004/153985/200219- Operations-Update-No-uncontolled-flow-access-for-Peel-UNamoi.pdf – https://www.waternsw.com.au/__data/assets/pdf_file/0008/153656/Peel- Namoi-Operations-Update-HS-Restrictions-removed-10-February.pdf • Access to Uncontrolled Flows for General Security licences 4 WaterNSW
Rainfall – last 12 months 5 WaterNSW
Temperature – last 12 months 6 WaterNSW
Rainfall – last 3 months 7 WaterNSW
Soil Moisture August 2019 April 2020 8 WaterNSW
2019/20 Water Allocation 9 WaterNSW
2019/20 Water Availability https://waterregister.water nsw.com.au/water- register-frame 10 WaterNSW
Part 2 - Current Situation • Drought Update – Peel the only valley in NSW remaining on level 4 under the State Government’s Extreme Events policy • Drought Map • Peel Valley Inflows • WNSW Water Insights Portal 11 WaterNSW
WaterNSW
Regional drought map WaterNSW
Peel Valley Inflows • Chaffey Dam inflows since July 2018 to the end of April have been 7.4GL • About half of the previous record from the 1960s • Downstream tributary inflows since July 2018 to the end of April have been 56.9GL – 51.6GL of this occurred in February, March and April 2020 14 WaterNSW
Chaffey Dam • https://waterinsights.waternsw.com.au/15101-peel-regulated-river-water- source/storage 15 WaterNSW
Water Insights • Storage levels • Inflows • Releases • Compare multiple years • Allocations • Outlook • more 16
Part 3 – Outlook for 2020/2021 • Storage Depletion Curve • Climate outlook • Allocations – Expect them to be similar to this year • Operations • Projects 17 WaterNSW
Storage Depletion Curve 18 WaterNSW
Rainfall outlook June to August 19 WaterNSW
Rainfall outlook July to September 20 WaterNSW
Operations 2020/2021 • Delivery of water only to Council • Environmental releases from Chaffey Dam will be in accordance with applicable rules and approvals – WSP rules (3ML/day minimum release rule currently suspended) – Environmental Approvals for the Temporary Weir at Dungowan (30ML/week) – Environmental Approvals for the Operation of the Chaffey to Dungowan Pipeline • Proposed rules – currently being finalised • Accrual of Environmental water • Environmental Water Technical Advisory Group required under the approval. Note that this is different to any requirements under the WSP. • Allocations for 2020/2021 are likely to be similar to allocations at the start of 2019/2020 – High Security and Stock & Domestic licences will be able to access flows in the river, however releases from Chaffey will not be made to meet these needs – General Security licences will be able to access water when uncontrolled flow announcements apply. Orders must still be placed 21 WaterNSW
Water Carting Rebate • $2000 Water Carting rebate available through Service NSW • https://www.service.nsw.gov.au /transaction/apply-water- carting-rebate • helps with the cost of carting water or installing water tanks and pipes • to help secure domestic water needs • currently available in the Peel downstream of Dungowan 22 WaterNSW
Projects - Discussion Points • Chaffey to Dungowan Pipeline Update – Construction and commissioning completed – Awaiting final confirmation on approvals from relevant government authorities • New Dungowan Dam and Pipeline Update – https://www.waternsw.com.au/projects/new-dams-for-nsw/dungowan-dam 23 WaterNSW
Part 4 – Groundwater (a snapshot) GROUNDWATER RESOURCE STATUS INFORMATION • Peel Alluvium Groundwater Sources This presentation is an initiative by • WaterNSW to gather groundwater resource status information for various groundwater sources in NSW Groundwater Status Information-Peel Alluvium Groundwater Source 24 WaterNSW
Geology – In any of the slides, the text area can also contain other content. – You will notice under the “Click to Fractured rock aquifer system composed mainly of mafic volcanic, enter text” line are icons displaying plutonic and metamorphic rocks options to inegraphs, pictures, Excel tables etc. Largely unexplored Groundwater Status Information-Peel Alluvium Groundwater Source 25 WaterNSW
Aquifer Details and Hydrogeology (Cross Section) Groundwater Status Information-Peel Alluvium Groundwater Source 26 WaterNSW
Groundwater Water level Trend • Groundwater Peel Alluvium Groundwater Hydrograph GW093044 level record Near Tamworth commenced 0.00 since 2000 GW093044 Peel Alluvium Near 1.00 Tamworth 2.00 Depth to Wate Table (m) • Groundwater 3.00 level Influenced 4.00 by climate 5.00 6.00 • Declining trend 7.00 May-00 May-01 May-02 May-03 May-04 May-05 May-06 May-07 May-08 May-09 May-10 May-11 May-12 May-13 May-14 May-15 May-16 May-17 May-18 May-19 May-20 Time Groundwater Status Information-Peel Alluvium Groundwater Source 27 WaterNSW
Stream Aquifer Interactions The Peel Alluvium GW • aquifer is highly connected with the Peel River Flowing River loses • water to the aquifer because of the flow gradient created by GW pumping When River stops • flowing, the aquifer starts losing in the stream creating pools of water Schematic Diagram of losing stream Groundwater Status Information-Peel Alluvium Groundwater Source WaterNSW
To keep updated Visit the website at: waternsw.com.au/drought For information on the Peel Valley including water availability reports and drought reports go to: waternsw.com.au/supply/drought-information/regional- nsw/peel-valley Call us on: 1300 662 077 Subscribe at: waternsw.com.au/subscribe For weekly customer drought updates and more information 29 WaterNSW
End of Presentation WaterNSW
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