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Lake Eucumbene storage levels – 2000 and 2007

Posted by waterweek on 5 October 2007

ecumbene-2007-21-sep.jpg

Posted in australia, Storage, water, Water Week Vol 0414 | Leave a Comment »

Murray Darling Report 26 September: Failure of winter and spring rainfall

Posted by waterweek on 4 October 2007

The failure of winter and spring rainfall was a disaster for the Murray Darling Basin, after successive years of drought. Water to Adelaide was so salted as to be of little value, and over 300 towns had no water, or severe water restrictions. Flow was down to 800 ML/day to Adelaide. “Very high salinities of around 13 000 EC continue to be recorded in the Goolwa channel upstream of the Goolwa Barrage”. David Dreverman General Manager of Murray river systems, in the Report For The Week Ending Wednesday, 26 September 2007, published 28 September, 2007 he said “very little rain fell over the Basin this past week, with the highest falls being in South Australia.

River Murray continues decline: Along the Lower Murray there was 17 mm at Tailem Bend and 9 mm at Waikerie. Due to dry conditions in the catchment area, inflows to the River Murray System continue to gradually decline”.

River Operations: Release from Dartmouth remains steady at 200 ML/day and the storage volume has increased from 656 to 664 ML/day (17 per cent of capacity).

Snowy releases increase flows: Hume storage also continues to slowly rise primarily due to release from the Snowy Mountains Scheme via Murray 1 power station – and has increased from 844 to 857 GL (28.2 per cent of capacity)., Release from Hume reservoir has been increased to 2500 ML/day to target a flow of 4000 ML/day at Albury/Wodonga. This rise will meet increasing downstream needs and will allow a further small rise in the level of Lake Mulwala.

Lake Mulwala storage: Lake Mulwala has been raised from 123.7 to 123.8 m AHD over the past week and will reach about 124 m AHD by early October. It is expected that levels will remain at about this level over coming weeks but will be subject to changes in weather and demand conditions. Release from Lake Mulwala has been increased from 2600 to 3000 ML/day in order to boost declining river flows further downstream.

Torrumbarry Weir storage: Torrumbarry Weir pool is being used as a mid river storage and is currently being drawn upon to increase flows downstream until the higher flows from Lake Mulwala arrive next week. This has resulted in a temporary lowering of the weir pool from 86.05 to 85.9 m AHD. Euston Weir storage: Release from Euston Weir averaged 1840 ML/day this week but is expected to increase to around 2000 ML/day within the next few days as the higher flows from Torrumbarry Weir arrive.

Euston Weir pool cut from Murray: Beginning 1 October, the Euston Weir pool will be further lowered by around 3 – 5 cm/week in order to reduce evaporative losses along the river.

Lake Victoria is now closed: The inlet to Lake Victoria is now closed ensuring that adequate flow and weir pool levels are maintained in the River Murray at Locks 9, 8 and 7. Release from Lake Victoria has been increased from 1400 to 1600 ML/day and storage has fallen from 552 GL to 542 GL (80 per cent of capacity).

Flow to South Australia: Flow to South Australia averaged around 1900 ML/day and although the flow at Lock 1 temporarily increased to 1 500 ML/day it has since fallen back to 800 ML/day, Salinity rises at Morgan: Salinity levels at Morgan and Lock 1 have increased by about 50 EC this week and are currently 780 and 690 EC respectively. The level of the Lower Lakes has fallen from 0.25 to 0.18 m AHD since mid August with Milang Jetty showing an increase in salinity of around 350 EC to the current level of about 2350 EC.

Posted in Murray Darling Basin, River Murray, Salinity, South Australia, Storage, Town Water, Water Week Vol 0413 | Leave a Comment »

A doomsday vault, or Noah’s Ark of the plant kingdom: Norway deep-freeze protects crop seeds against future disaster

Posted by waterweek on 3 October 2007

In a cavern under a remote Arctic mountain, Norway would soon begin squirrelling away the world’s crop seeds in case of a man-made or natural disaster, wrote John Acher in The Advertiser (28/9/2007, p.19).

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Posted in agriculture, Arctic, New ideas, Storage, Water Week Vol 0413 | Leave a Comment »

Goldfields Pipeline helpful, but fast-growing towns need underground aquifers for water solution, says Steve Gibbons, Member for Bendigo, Victorian

Posted by waterweek on 21 September 2007

Despite some good recent rains water reserves remained far below normal capacity, with the reservoirs in the Coliban system currently about 15 per cent full and Bendigo’s other main source of supply, Lake Eppalock, at under five per cent of capacity, said Labor MP Steve Gibbons in the Federal Parliament on 14 August 2007.

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Posted in Aquifer, Drought, Emergency, Pipeline, Salinity, Storage, Town Water, Victoria, water, Water Week Vol 0411 | Leave a Comment »

Qld, 8 September: Heavy rains during the past week added 5400 megalitres to the combined storages of Wivenhoe, Somerset and North Pine dams

Posted by waterweek on 21 September 2007

According to The Courier Mail, (08/09/2007, p.7) quoting SEQWater operations manager Rob Drury, a further month’s supplies were added to Brisbane’s dams through scattered rainfall over the past week with last Thursday’s inflows alone adding 5400 megalitres into the combined storages of Wivenhoe, Somerset and North Pine dams.

Combined storage capacity at 20.56pc: A further 5000 megalitres was expected to flow into Somerset in the next two to three days from heavy rain in the far north of the catchment and the Sunshine Coast. The combined capacity of all three dams was 20.56 per cent on 7 September as showers continued in catchments.

Somerset outshines: Somerset Dam had done best, with good rain at the Maleny end of the Sunshine Coast catchment. In the 24 hours to 9am on 7 September, the highest rainfall in Queensland was 129mm at Noosa Heads.

The Courier Mail, 8/9/2007, p. 7

Posted in Dams, Domestic, qld, Rainfall, Storage, Water Week Vol 0411 | Leave a Comment »

South Australia in full crisis mode as whole Murray river unlikely to get 1 500 gigalitres flow: allocations of 16 per cent

Posted by waterweek on 19 September 2007

Kay Maywald, Minister for Water Security, answering a question in the House of Assembly, South Australia, 11 September 2007, from Adrian Pederick (Hammond) – who asked if the the increase in allocation (allocations of 16 per cent) mean that the state is getting 1 500 gigalitres across the border in River Murray inflows, Kay Maywald said the whole Murray river was unlikely to get 1 500 gigalitres flow.

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Posted in Allocations, mdb, Policy, River Murray, SA, Storage, Water Week Vol 0411 | Leave a Comment »

Storage in Lake Victoria at 555 GL, to supply water to South Australia

Posted by waterweek on 19 September 2007

The water stored in Lake Victoria originated from tributary inflows during winter, particularly from the Ovens and Kiewa Rivers. Read the rest of this entry »

Posted in Allocations, mdb, Policy, River Murray, Storage, Water Week Vol 0411 | Leave a Comment »

12 September 2007: Increased levels in Blowering Dam due to releases from Snowy Hydro into the Murrumbidgee system

Posted by waterweek on 19 September 2007

New Snowy releases ordered: Increased levels in Blowering Dam are largely due to releases from Snowy Hydro into the Murrumbidgee system. Read the rest of this entry »

Posted in Hydro, mdb, Storage, Water Week Vol 0411 | Leave a Comment »

NSW Burrunjuck and Blowering, Snowy Hydro and water in downstream storages, now represent the total available water to the Murrumbidgee Valley

Posted by waterweek on 19 September 2007

A 17 September NSW Department of Water and Energy paper “Critical water planning for the Murrumbidgee Valley”, reported natural inflows into storages have receded to very low levels. Storage levels in Burrunjuck and Blowering together with assured inflows from Snowy Hydro and water in downstream storages, represent the total available water to the Murrumbidgee Valley. Read the rest of this entry »

Posted in agriculture, Allocations, Drought, Emergency, Environmental Flows, nsw, Storage | Leave a Comment »