Navigation Warning - Murray River - Waters above locks 2, 5 and 6 - Lowering of river level

MURRAY RIVER – WATERS ABOVE LOCKS 2, 5 AND 6
LOWERING OF RIVER LEVEL
From Monday 30 April to early September 2018

Roads and Maritime Services advise vessel operators that the Department of Environment and Water (South Australia) is planning to temporarily lower the water level of the River Murray in the stretches of river above Lock 6, Lock 5 and Lock 2 during winter 2018.

Above Lock 6 (north of Renmark), the water level of the river will be lowered to a maximum of 20cm below normal pool level. The water level of the river will reduce by 2cm a day for the first week of May down to a maximum of 12cm below normal pool level.

This level will be held at this level for three weeks until the end of May. After this hold period, the water level will be lowered a further 8cm to 20cm below the normal pool level for three more weeks before being returned to normal pool level by mid-June.

Above Lock 5 (just south of Renmark), the same process will be undertaken to lower the water level of the river to a maximum of 15cm below normal pool level. Initially the water level will reduce to 8cm below normal pool level in late May/early June.

The lower water level will be held for three weeks until mid-June, then will be lowered by another 4cm to 12cm below normal pool level and held for four more weeks until early July. Finally the water level will reduce again by 3cm to 15cm below normal pool level, before being returned to the normal pool level at the end of July.

Above Lock 2 (near Waikerie), the water level will be lowered by up to 25cm below normal pool level. Initially the water level will be lowered 15cm below normal pool level in late July and will be held at that level for two weeks until early August.

The water level will then decrease by another 10cm to a total of 25cm below normal pool level and be held at this level for two weeks in mid-August before returning to the original water level at the start of September.

Caution should be taken when navigating in this area due to the heightened risk of unmarked/submerged hazards and reduced river level.

Large vessels are advised to consider their voyage and plan appropriately.

For further information visit:
http://www.naturalresources.sa.gov.au/samurraydarlingbasin/water/river-murray

The status of the river level can be monitored through the following websites:
http://www.mdba.gov.au/river-information

MAPS & CHARTS AFFECTED

Roads and Maritime Boating Map 20

For further information call Roads and Maritime Services Infoline on 131 236 (8.30am – 4.30pm seven days) or visit rms.nsw.gov.au/maritime.

MARINE NOTICE SO1836

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