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Irrigation Allocations - October 2008

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Goulburn-Murray Water (G-MW)

On 15 October G-MW announced increased allocations on the Murray and Goulburn systems, but allocations remained at 0% on all other systems.


    15 October 2008
     Change since 30 September 2008
    Goulburn   12%   +8%
    Murray   17%   +11%
    Broken   0%  0%
    Campaspe   0%   0%
    Loddon   0%  0%
    Bullarook   0%   0%

    The Minister for Water has temporarily qualified rights to water in the Murray, Goulburn, Broken, Campaspe, Loddon and Bullarook systems to make sufficient water available for essential urban and farming needs.

    Normal allocation rules will resume on the Goulburn, Murray and Broken systems when allocations on these systems reach 20%. The qualification on the Loddon, Bullarook, and Campaspe systems will remain in place until the allocations on these systems reach 50%.

    The outlook for allocations (% of high-reliability water share) on the Murray and Goulburn water systems for the 2008/09 season was updated by G-MW on 15 October 2008, and is shown in the table below. Current inflow conditions and monthly inflow records from seasons with dry winter conditions have been used to prepare the outlooks.

    Without any significant rainfall events there are unlikely to be any allocations in the Broken, Campaspe, Loddon, or Bullarook systems this season.

    Murray System

    Inflow Conditions
    15 Dec 08
    15 Feb 09
    Dry
    20%
    24%
    Average
    25%
    36%
    Wet
    35%
    54%

    Goulburn System

    Inflow Conditions
    15 Dec 08
    15 Feb 09
    Dry
    17%
    22%
    Average
    26%
    42%
    Wet
    41%
    63%

    The next allocation announcement will be made by G-MW on 3 November, and the next outlook will be released on 17 December.

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    Coliban Rural System

    On 15 September, Coliban Water announced a 0% allocation on the Coliban Rural System.

    Recycled water is available to customers on the Ascot, Axe Creek and Cockatoo Hill channel systems up to 40% of licenced volume. Elsewhere in the rural system, a qualification of rights is in place to provide significant commercial operators with emergency supplies up to 30% of licenced volume.

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    Wimmera Mallee Domestic and Stock Supply System

    At 31 October 2008, storages in the Wimmera-Mallee domestic and stock supply system were at 6.0% of capacity.

    Irrigation allocations remain at zero.

    The Waranga channel run was completed on 6 October. At total of 10,721 ML was used to supply town dams and some farm dams on the basis of one dam per 400 hectare of farm enterprise. This includes rural customers in the northern-most area of Supply System 2 of the Wimmera Mallee Pipeline who will not receive a piped supply until late 2008.

    The Grampians channel run to supply systems 3 and 4 is complete. This run supplied town dams only. Water is being carted to farms for domestic water supply. Rural customers have access to water in town dams for carting to meet livestock and other farm related needs.

    Farm and towns on supply systems 1, 2 and 5 are receiving a restricted supply from the new pipeline.

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    Southern Rural Water

    Macalister Irrigation District (MID)

    At 31 October, Lake Glenmaggie, the principal source of water for the MID, was at 87.0% of capacity. 

    The allocation will remain at 90% until 15 December (end of the official spiling season), for all irrigators within the MID, and for diverters on the Thomson River, Macalister River and Rainbow Creek. 

    Latrobe System

    At the end of October, storage levels in Blue Rock Lake were at 78.2% of capacity.  The irrigation share of Blue Rock remained at 6.7%.

    SRW licence holders downstream on the Latrobe and Tanjil Rivers could pump up to their licensed volume subject to the availability of unregulated river flows (which normally contribute approximately 70% of entitlements). 

    Werribee Basin (Bacchus Marsh and Werribee Irrigation District)

    SRW’s share of the Werribee basin was at 4% of capacity at the end of October.

    The seasonal allocation remained at 4% of high reliability water share in October for the Werribee and Bacchus Marsh irrigation districts. SRW has extended the period that this allocation applies until 28 February 2009.

    SRW is progressing its Western Irrigation Contingency Plan for the 2008/09 season. Pumping of dead storage in Pykes Creek Reservoir will continue, and transfer of another 2,000 ML of water from the SRW drought reserve in the Thomson Reservoir will take place.

    Irrigators in the Werribee area continue to rely on the recycling scheme as their principal water source while the river flows are very low. The recycling scheme is now providing up to about 60 ML/day, and approximately 90% of Werribee growers are participating in the scheme.

    Maribyrnong Basin

    The storage volume in Rosslynne Reservoir remained low, at 3.3% of capacity at the end of October.  With inflows well below average, SRW diverters face another season of low, possibly zero, allocations.

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