STATUS REPORT April 2021

SEQ Water Grid capacity Average daily residential consumption SEQ Water Grid operations and overall water security position (L/Person) South East (SEQ) combined Water Grid storage is at 61.4% Grid flow operations help to distribute water to where it is needed most 100% 250 2020 April average as we approach the dry season. in SEQ. The Southern Regional Water Pipeline continues to operate in 90% 200 a northerly direction and is supported by the Gold Coast Desalination Recent rainfall in March and April has increased levels in coastal 150 Plant which is in top up mode. In the month of April, the Northern Pipeline 80% storages such as Hinze (now spilling), however there were only 70% 100 Interconnector operated in a southerly direction. SEQ Drought Readiness 50 minimal increases to the Somerset and Wivenhoe storages (only a 2.4% 60% average increase in the last month). The average residential water usage for April was 149 litres per person, Drought Response 0 50% per day (LPD). This is lower than this time last year and is just under the 40% 149 169 143 170 146 142 The region’s largest water storages, Somerset and Wivenhoe, are at region’s drought response target of 150 LPD. % a combined storage level of 49.8%, which is down 8.5% from this time 30% 61.4 *Data range is 25/03/2021 to 21/04/2021 and 26/03/2020 to 22/04/2020 last year. accounts for more than half of the Water Grid May to July has an unlikely chance of exceeding median rainfall in the 20% See map below and legend at the bottom of the page for water service provider information. storage volume and has not filled since May 2015. SEQ region, according to the Bureau of Meteorology (BOM). The 10% El Niño–Southern Oscillation is neutral, as are most other climate drivers.  2.5% 1 month ago 0%  5.5% 1 year ago *as at 27 April 2021 Sunshine Coast Dam storage levels Water Grid storage End of month storage decline *Data correct at 27 April 2021 – selected are largest storages for north, south and Water Grid storage actual drawdown to April 2021, and central areas. Visit the website for more information. Somerset assuming a repeat of the Moreton Bay particularly dry 2019 year projected drawdown to July 2021. Baroon Pocket (2020 data not used): The Water Grid drawdown graph shows historical storage data and a projected four month drawdown if the rate observed during the dry calendar year of 2019 was Full supply capacity 61,000 ML repeated.1 The 2019 data is used because it was a particularly dry year. The Water Grid Current capacity 60,837 ML May 21 60.1% July 21 58.3% storage could reach 50% as soon as December 2021 if dry conditions, as observed  0.4% 1 week ago Jun 21 59.4% Aug 21 56.8% in 2019, were to continue from May onwards. The Millennium Drought is shown with  5.3% 1 month ago today's demand, current grid and drought response plan to compare drawdowns over STORAGE an extended drought period (see Figure 1). LEVEL  2.1% 1 year ago Redlands City 99.7% Figure 1: Water Grid storage drawdowns 1. This projected drawdown does not account for differences in demand and supply conditions, such as continued operation of the Gold Coast Desalination Plant. Ipswich City Council 100% 90% North Pine (Lake Samsonvale) Lockyer Valley Full supply capacity 214,302 ML 80% Current capacity 144,397 ML 70%  0.4% 1 week ago 60%  5.3% 1 month ago STORAGE Legend Scenic Rim LEVEL  1.6% 1 year ago 50% 40% 67.4% Water Grid flow direction City of Water Grid storage level (%) Gold Coast 30% 20% Jun-15 Jun-16 Jun-17 Jun-18 Jun-19 Jun-20 Jun-21 Jun-22 Jun-23 Jun-24 Jun-25 Sep-15 Sep-16 Sep-17 Sep-18 Sep-19 Sep-20 Sep-21 Sep-22 Sep-23 Sep-24 Dec-15 Dec-16 Dec-17 Dec-18 Dec-19 Dec-20 Dec-21 Dec-22 Dec-23 Dec-24 Wivenhoe/Somerset Hinze Mar-16 Mar-17 Mar-18 Mar-19 Mar-20 Mar-21 Mar-22 Mar-23 Mar-24 Mar-25 Millennium Drought modelling Recorded storage levels 2021 Predicted storage decline assuming 2019 drawndown scenario is repeated Full supply capacity 1,545,089 ML† Full supply capacity 310,730 ML Current capacity 769,964 ML Current capacity 313,373 ML  0.4% 1 week ago  0.9% 1 week ago STORAGE  2.4% 1 month ago STORAGE  8.7% 1 month ago LEVEL  8.5% 1 year ago LEVEL  2.8% 1 year ago 49.8% †combined dam levels 100.9% Soil moisture The deep soil moisture for the Brisbane River catchment is at 34.02% full.

Figure 2: Brisbane River catchment monthly deep soil moisture – modelled estimate to 27 Apr 2021 (source Bureau of Meteorology AWRA-L)

1300 SEQWATER 1300 737 928 www.seqwater.com.au Gympie Weather outlook Regional Council Noosa Shire Temperature Rainfall Council The BOM outlook is for a likely chance of exceeding the 24.1°C The BOM outlook is for an unlikely chance of exceeding the 187mm (Lake Macdonald) median maximum temperature in the Brisbane area from May to July median rainfall for the Brisbane area from May to July with a with a 60-65 % probability. 40-45 % probability. scheme status

Cooloolabin Dam (Lake Cooloolabin) Seqwater supplies water to rural landholders and (Lake Borumba) businesses that are licensed to take water from dams and waterways via water supply schemes. The amount of

Poona Dam water that can be extracted by licensed irrigators varies according to local water conditions. In times of drought Sunshine Coast or low flows, irrigation entitlements may be restricted or Regional Council suspended. (Lake Baroon) Somerset This data has been updated as at 27 April 2021. Regional Council

Somerset Dam Moreton Bay (Lake Somerset) Regional Council Full allocation Restricted Suspended http://www.bom.gov.au/climate/outlooks/#/temperature/maximum/median/seasonal/0 http://www.bom.gov.au/climate/outlooks/#/rainfall/median/seasonal/0 Cedar Pocket Water Supply Scheme Wivenhoe Dam (Lake Kurwongbah) Cedar Pocket Dam currently 99.7% (up 5.7% from last month) Low probability of reaching (Lake Wivenhoe) drought trigger in next 3 months Announced allocations Medium Priority 100% Off-grid community drought status (Lake Samsonvale) The SEQ Water Grid allows us to move treated drinking Medium probability of reaching water around the region. Off-grid communities are not drought trigger in next 3 months connected to the SEQ Water Grid. Mary Valley Water Supply Scheme High probability of reaching Brisbane City Borumba Dam currently 81.8% (up 1.8% from last month) This table has been updated as at 27 April 2021. Redland drought trigger in next 3 months Cabbage Tree Council Announced allocations Medium Priority 100% Creek Dam City Council (Lake Manchester) (also supplies high priority) Clarendon Dam Gold Creek (Lake Clarendon) Dam

(Boonah, Aratula and Mount Alford) Amity Point Kalbar Central Supply Scheme (Lake Dyer) Supply: North Stradbroke Island groundwater Supply: 42.1% Wivenhoe Dam/ currently 49.8% Lockyer Valley pswich Standing water level 16.55 m AHD* City Council (up 2.4% from last month) Level 1: drought response in effect as of 9/9/19 Regional Council Level 1: drought trigger at 15 m AHD Level 2: drought trigger at 25% dam level Announced allocations Medium Priority 100% (also supplies high priority) Beaudesert Logan Kenilworth City Council Supply: 98.2% Supply: Wells near the Mary River City of Level 1: drought trigger at 50% Maroon Dam level Mary River (at Bellbird Creek) flow ~100 ML/day Gold Coast Lower Lockyer Water Supply Scheme Canungra Level 1: drought trigger at 0 ML/day flow Atkinson Dam currently 4.6% (up 1.1% from last month) Wyaralong Announced allocations Medium Priority 0% Supply: Canungra Creek; stream flow ~73 ML/day Kilcoy Dam

Level 1: preparedness and monitoring; flow falls to <7 ML/day Supply: Somerset Dam 77.7% Hinze Dam (Advancetown (Regional Water Grid storages response) Lake) Warrill Valley Water Supply Scheme (Bromelton Weir) Dayboro Level 1: drought response in effect as of 15/09/20 Moogerah Dam currently 42.1% (up 0.2% from last month) Moogerah Dam Supply: groundwater/carting; currently carting due to recent (Lake Moogerah) Level 2: drought trigger at 50% Water Grid level Announced allocations Medium Priority 96% rain impacting water quality of bores Nindooinbah Dam (also supplies high priority) Level 1: Well No. 1 standing level falls below 40.88 m AHD Kooralbyn Little Nerang Supply: Maroon Dam 98.2% Scenic Rim Dam Dunwich Maroon Dam Regional Council Level 1: drought trigger at 50% Maroon Dam level (Lake Maroon) Water Supply Scheme Supply: North Stradbroke Island groundwater Maroon Dam currently 98.2% (up 8.3% from last month) Standing water level 16.55 m AHD* Linville Announced allocations Medium Priority 100% Level 1: drought trigger at 15 m AHD Supply: Brisbane River at Linville ~35 ML/day (also supplies high priority) Esk Level 2: drought response in effect as of 15/09/20 Supply: Wivenhoe Dam 40.8% Next drought trigger: Voluntary Conservation, restriction of Central Lockyer Water Supply Scheme (Regional Water Grid storages response) hydrant standpipes and water carting. Rathdowney Supply: Maroon Dam 98.2% Clarendon Dam & Bill Gunn Dam currently 5% Level 1: drought response in effect as of 15/09/20 Lowood (up 6.3% from last month) Level 1: drought trigger at 50% Maroon Dam level Level 2: drought trigger at 50% Water Grid level Supply: Wivenhoe Dam 40.8% Announced allocation Morton Vale 0%, Medium Priority 0% Jimna (Regional Water Grid storages response) Somerset (surface water) (all zones) Level 1: drought response in effect as of 15/09/20 Announced allocation Medium Priority 80%, Low Priority 60% Supply: Yabba Creek; plant operating to meet demand Supply: Somerset Dam 77.7% (Regional Water Grid storages response) Level 2: drought trigger at 50% Water Grid level (ground water) Level 1: preparedness and monitoring; no water flowing Level 1: drought response in effect as of 15/09/20 over the weir Point Lookout Level 2: drought trigger at 50% Water Grid level Supply: North Stradbroke Island groundwater Standing water level 16.55 m AHD* *The bore chosen has the most reliable and up-to-date data that can be continuously monitored. Level 1: drought trigger at 15 m AHD