RIVER MURRAY WEEKLY REPORT FOR THE WEEK ENDING WEDNESDAY, 10TH JUNE 2016 Trim Ref: D15/50546 Rainfall and Inflows It was a relatively dry week over the Murray-Darling Basin. There were moderate rainfall totals reported in Victoria along the southern divide with the passage of weak frontal systems. Totals were mostly less than 10 mm further inland through southern NSW, northern Victoria and in South Australia. The northern Basin remained mostly dry (Map 1). The week’s highest rain totals fell over the Victorian Alps, including 41 mm at Mt Hotham. Notable totals elsewhere included 38 mm at Mt William and 18 mm at Clunes. Map 1 – Murray-Darling Basin rainfall week ending 10th June 2015 (Source: Bureau of Meteorology) There was a slow recession in stream flows along the upper Murray tributaries this week. On the Mitta Mitta River, the flow at Hinnomunjie Bridge decreased from 550 to 450 ML/day. On the Ovens River, the flow at Rocky Point receded from 1,400 to 900 ML/day. GPO Box 1801 Canberra ACT 2601 Email: engagement@mdba.gov.au Telephone: 02 6279 0100 Facsimile: 02 6248 8053 Web: www.mdba.gov.au ABN 13679821382 Page 1 of 6 River Operations Hume release remains at minimum of 600 ML/day Lake Mulwala level steady as drawdown target is reached Variable flows expected downstream of the Goulburn confluence from mid-June MDBA total storage increased by 89 GL this week, with the active storage now 3,886 GL or 46% capacity. At Dartmouth Reservoir, the storage volume decreased by 21 GL to 2,847 GL (74% capacity) as bulk transfers continue from Dartmouth to Hume Reservoir. The flow at Colemans gauge has reduced during the week from 5,500 ML/day to 3,400 ML/day, with the flow planned to continue falling to below 2,000 ML/day in about 2 weeks’ time. At Hume Reservoir, inflows from Dartmouth and the Snowy Scheme have boosted the natural inflows to increase the storage level by 69 GL. The storage volume is currently 854 GL (28% capacity). The release from Hume has remained at the minimum flow of 600 ML/day for the last four weeks. Downstream at Doctors Point, the flow has receded to 1,700 ML/day. The water level in Lake Mulwala has been steady during the week at about 121.2 m AHD, which is the target level during this drawdown. This level is about 3.5 m below the normal operating level, and this low level is expected to be maintained until mid-July, prior to refilling the lake in preparation for the commencement of the irrigation season in August. The release from Yarrawonga Weir has gradually reduced to 3,600 ML/day and is expected to be about 3,000 ML/day by next week. On the Edward River system, the combined flow through the Edward and Gulpa Creek offtakes has slowly reduced to 900 ML/day as flow in the River Murray has receded. Stevens Weir pool has been drawn down to 2.5 m, which is 2.7 m below the normal operating level. The flow downstream of Stevens Weir has slowly reduced to 1,100 ML/day with this recession expected to continue for the next week or more. On the Goulburn River, the flow at McCoys Bridge has been steady at about 1,000 ML/day for the last 2 months. However, by 15–16 June, the flow at McCoys is expected to commence increasing as an environmental pulse flows along the Goulburn River. This flow may reach 9,500 ML/day by late June, before receding back to about 1,000 ML/day by mid-July. More information is available on the GoulburnBroken Catchment Management Authority website. River users in the Echuca district and downstream need to be aware that levels will rise noticeably starting in mid-June, as this environmental pulse enters the River Murray from the Goulburn River. The flow pulse is expected to reach the Sunraysia area by late June, with the peak flow passing Mildura in early July. Further information will be provided in future Weekly Reports. The flow past Torrumbarry Weir has receded during the week to 4,300 ML/day (1.5 m local gauge height), with further reductions expected in the coming week. However, by about 24 June, the flow is expected to exceed 10,000 ML/day, or 3.1 m on the downstream gauge. The peak flow past Torrumbarry Weir may be close to 11,000 ML/day (3.35 m local gauge height). At Swan Hill, the flow has receded to 5,300 ML/day (1.1 m local gauge height) and the steady recession is expected to continue for another 10 days or so. Higher flows at Swan Hill are expected during late June, with a peak of about 10,000 ML/day (1.8 m local gauge height) on or about 29 June. The weir pool at Euston is currently 47.74 m AHD, which is about 14 cm above its Full Supply Level. A weir pool level of up to 20 cm above FSL is currently being targeted. At Mildura, the repairs and maintenance of the trestleway, and the lock refurbishment, are progressing. The flow is currently 10,200 ML/day and is expected to recede to around 5,000 ML/day by late June. The pulse of water originating from the Goulburn River is expected to pass Mildura during early July, with a peak flow exceeding 10,000 ML/day between 5–14 July. GPO Box 1801 Canberra ACT 2601 Email: engagement@mdba.gov.au Telephone: 02 6279 0100 Web: www.mdba.gov.au Facsimile: 02 6248 8053 ABN 13679821382 Page 2 of 6 The storage volume in the Menindee Lakes increased by just 1 GL during the week, with the storage now 75 GL (4% capacity). There has been no water released from the Menindee Lakes to the lower Darling since early May. Photo 1 – Daybreak on the Great Darling Anabranch, just upstream of the confluence with the River Murray (Courtesy: Sean Kelly, MDBA) Flow across the border to South Australia averaged 3,700 ML/day over the past week. At the Lower Lakes, the level in Lake Alexandrina is steady at about 0.64 m AHD. High tides and large swells have restricted releases through the barrages over the last week. For media inquiries contact the Media Officer on 02 6279 0141 DAVID DREVERMAN Executive Director, River Management GPO Box 1801 Canberra ACT 2601 Email: engagement@mdba.gov.au Telephone: 02 6279 0100 Web: www.mdba.gov.au Facsimile: 02 6248 8053 ABN 13679821382 Page 3 of 6 Water in Storage Week ending Wednesday 10 Jun 2015 Full Supply Level MDBA Storages Dartmouth Reservoir Hume Reservoir Lake Victoria Menindee Lakes Total Total Active MDBA Storage Current Storage Level Full Supply Volume (m AHD) 486.00 192.00 27.00 (GL) 3 856 3 005 677 1 731* 9 269 Major State Storages Burrinjuck Reservoir Blowering Reservoir Eildon Reservoir Current Storage (GL) 2 847 854 379 75 4 155 % 74% 28% 56% 4% 45% 438 430 1 916 43% 26% 57% (m AHD) 469.17 177.43 24.34 1 026 1 631 3 334 Dead Storage Active Storage (GL) 71 23 100 (- -) # -- (GL) 2 776 831 279 0 3 886 46% ^ 3 24 100 435 406 1 816 Change in Total Storage for the Week (GL) -21 +69 +39 +1 +89 +4 +4 +6 * Menindee surcharge capacity – 2050 GL ** All Data is rounded to nearest GL ** # NSW takes control of Menindee Lakes when storage falls below 480 GL, and control reverts to MDBA when storage next reaches 640 GL ^ % of total active MDBA storage Snowy Mountains Scheme Storage Lake Eucumbene - Total Snowy-Murray Component Target Storage Snowy diversions for week ending 09 Jun 2015 Active Storage (GL) 2 156 1 060 1 240 Weekly Change (GL) n/a n/a Diversion (GL) From 1 May 2015 55 21 34 83 This Week Snowy-Murray Tooma-Tumut Net Diversion Murray 1 Release +16 +0 16 +19 Major Diversions from Murray and Lower Darling (GL) * New South Wales This Week Murray Irrig. Ltd (Net) Wakool Sys Allowance Western Murray Irrigation Licensed Pumps Lower Darling TOTAL -0.1 0.8 0.1 1.1 0.1 2.0 From 1 July 2014 842 94 24 283 61 1304 Victoria This Week Yarrawonga Main Channel (net) Torrumbarry System + Nyah (net) Sunraysia Pumped Districts Licensed pumps - GMW (Nyah+u/s) Licensed pumps - LMW TOTAL 0 0 0 0.2 1.5 1.7 From 1 July 2014 301 627 105 75 298 1406 * Figures derived from estimates and monthly data. Please note that not all data may have been available at the time of creating this report. ** All data above is rounded to nearest 100 ML for weekly data and nearest GL for cumulative data** Flow to South Australia (GL) * Flow to SA will be greater than normal entitlement for this month due to the delivery of additional environmental water. Salinity (EC) Entitlement this month Flow this week Flow so far this month Flow last month 90.0 * 26.0 37.5 137.5 (3 700 ML/day) (microSiemens/cm at 25o C) Current Swan Hill Euston Red Cliffs Merbein Burtundy (Darling) Lock 9 Lake Victoria Berri Waikerie Morgan Mannum Murray Bridge Milang (Lake Alex.) Poltalloch (Lake Alex.) Meningie (Lake Alb.) Goolwa Barrages Average over the last week 70 160 170 920 180 180 260 300 300 320 340 720 580 2 230 2 840 GPO Box 1801 Canberra ACT 2601 Email: engagement@mdba.gov.au Average since 1 August 2014 70 160 180 920 170 180 250 300 290 320 340 720 690 2 180 2 820 Telephone: 02 6279 0100 Web: www.mdba.gov.au 80 100 120 120 830 130 210 220 290 280 320 350 750 640 2 410 1 570 Facsimile: 02 6248 8053 ABN 13679821382 Page 4 of 6 River Levels and Flows Week ending Wednesday 10 Jun 2015 7.3 - 1.57 2.34 1.42 1.57 0.75 0.84 0.73 1.29 1.53 1.10 3.14 1.84 3.09 2.98 0.63 208.09 219.23 155.05 150.04 148.19 126.86 115.77 105.13 80.08 64.02 52.26 43.68 27.85 19.91 - (ML/day) 1 830 3 390 3 620 600 1 680 2 290 3 640 3 900 4 320 5 310 8 470 9 860 10 230 10 720 3 530 2 970 F F F S F S S F F F F F F S F R (ML/day) 3 230 4 870 4 380 600 2 200 2 330 3 940 4 660 5 210 6 340 9 480 10 380 10 510 11 040 3 550 3 110 Average Flow last Week (ML/day) 3 230 4 490 4 990 600 2 180 2 270 5 720 6 550 7 650 8 330 10 760 10 840 10 000 9 810 3 530 3 650 2.8 11.9 9.0 5.5 5.0 6.1 9.0 - 1.42 8.19 1.50 1.36 2.51 1.46 0.92 3.42 4.14 1.10 154.65 145.87 92.92 81.13 57.89 54.95 56.88 - 1 090 1 100 970 1 140 1 920 490 550 570 540 0 F F S F F F F S F F 1 650 1 240 960 1 230 2 010 580 540 460 430 0 1 600 1 240 930 1 780 2 160 670 350 520 470 0 4 240 5 910 Minor Flood Stage River Murray Khancoban Jingellic Tallandoon ( Mitta Mitta River ) Heywoods Doctors Point Albury Corowa Yarrawonga Weir (d/s) Tocumwal Torrumbarry Weir (d/s) Swan Hill Wakool Junction Euston Weir (d/s) Mildura Weir (d/s) Wentworth Weir (d/s) Rufus Junction Blanchetown (Lock 1 d/s) (m) Tributaries Kiewa at Bandiana Ovens at Wangaratta Goulburn at McCoys Bridge Edward at Stevens Weir (d/s) Edward at Liewah Wakool at Stoney Crossing Murrumbidgee at Balranald Barwon at Mungindi Darling at Bourke Darling at Burtundy Rocks Gauge local (m) 4.0 4.2 5.5 5.5 4.3 4.6 6.4 6.4 7.3 4.5 8.8 9.1 Height (m AHD) Flow Trend Average Flow this Week Natural Inflow to Hume (i.e. Pre Dartmouth & Snowy Mountains scheme) Weirs and Locks Pool levels above or below Full Supply Level (FSL) Murray Yarrawonga No. 26 Torrumbarry No. 15 Euston No. 11 Mildura No. 10 Wentworth No. 9 Kulnine No. 8 Wangumma Lower Lakes FSL (m AHD) 124.90 86.05 47.60 34.40 30.80 27.40 24.60 u/s -3.73 +0.00 +0.14 -3.28 +0.05 +0.00 -0.06 d/s +0.32 +0.45 -0.07 +0.08 FSL (m AHD) 22.10 19.25 16.30 13.20 9.80 6.10 3.20 No. 7 Rufus River No. 6 Murtho No. 5 Renmark No. 4 Bookpurnong No. 3 Overland Corner No. 2 Waikerie No. 1 Blanchetown u/s +0.04 +0.06 +0.01 +0.04 +0.02 +0.02 -0.09 d/s +0.68 -0.04 +0.12 +0.38 +0.12 +0.02 -0.12 FSL = 0.75 m AHD Lake Alexandrina average level for the past 5 days (m AHD) Barrages 0.64 Fishways at Barrages Openings Level (m AHD) No. Open Goolwa 128 openings 0.69 All closed Mundoo 26 openings 0.64 All closed Boundary Creek 6 openings 0.1 Ewe Island 111 gates All closed Tauwitchere 322 gates 0.66 All closed AHD = Level relative to Australian Height Datum, i.e. height above sea level GPO Box 1801 Canberra ACT 2601 Email: engagement@mdba.gov.au Rock Ramp Telephone: 02 6279 0100 Web: www.mdba.gov.au Open Vertical Slot Open Open Facsimile: 02 6248 8053 ABN 13679821382 Page 5 of 6 Week ending Wednesday 10 Jun 2015 Murray System Daily Inflows (excl. Snowy, Darling, inter-valley trade and environmental inflows) - 5 day rolling average 100000 80000 ML/day Long term average 60000 2014-15 40000 20000 2015-16 0 Murray System Monthly Inflows (excl. Snowy, Darling, inter-valley trade and environmental inflows) 1800 1600 Gigalitres (GL) 1400 2014-15 1200 1000 Long term average 800 10 year average 600 400 200 0 State Allocations (as at 10 Jun 2015) NSW - Murray Valley High security General security Victorian - Murray Valley 97% 61% NSW – Murrumbidgee Valley High security General security 95% 53% 100% 0% Victorian - Goulburn Valley High reliability Low reliability 100% 0% South Australia – Murray Valley NSW - Lower Darling High security General security High reliability Low reliability 100% 100% High security 100% NSW : http://www.water.nsw.gov.au/Water-management/Water-availability/Waterallocations/Water-allocations-summary/water-allocations-summary/default.aspx VIC : SA : http://www.nvrm.net.au/allocations/current.aspx http://www.environment.sa.gov.au/managing-natural-resources/river-murray GPO Box 1801 Canberra ACT 2601 Email: engagement@mdba.gov.au Telephone: 02 6279 0100 Facsimile: 02 6248 8053 Web: www.mdba.gov.au ABN 13679821382 Page 6 of 6