CONSTRUCTION WORKS & OTHER ISSUES
Mariners are advised that from 19 December 2014
until 30 November 2015 dredging work will be
undertaken at the River Murray mouth, within the
Coorong National Park; on the west by a line north
south passing through Beacon 2 across the Goolwa
Channel, and on the east by a line due north
commencing at a point 35.559926°S 138.898474°E
(Barkers Knoll) across the Coorong Channel, and on
the seaward side of the Sir Richard and Younghusband
Peninsulas, 1.5 km either side of the river mouth,
and 100 metres seaward from the high water mark.
This work will be continuous, day and night, and
dredgers will display the appropriate lights and
shapes as prescribed by the River Murray Traffic
Boating traffic through the
area will be permitted during daylight hours where
safety is not compromised. Temporary closure of the
channel may be required from time to time.
An Aquatic Activity Licence has been issued to SA
Water to restrict access by all personnel and
aquatic craft to this vicinity of the River Murray
mouth. Buoys, either
connected by a surface cable and rod, or
individually anchored, will mark the extent of the
exclusion zone around dredges and associated
equipment. Mariners are
advised to navigate with caution in the area.
Lock 1 Pool Levels
Lock 1 is 0.10 m below normal pool level to enable
investigations to be undertaken at the weir.
Work is underway to relocate pump offtakes from
Yatco Lagoon and install new pump offtakes on the
River Murray. The construction work is expected to
be completed by early 2015.
Deep Creek (Pike Floodplain)
Work to replace the Deep Creek inlet structure
and construct a vertical slot fishway is now
have been expressed about the low levels at Settlers
Bend (below Lock 5). There is a 1.1m depth on the
exit of the bend coming upstream (during the
increased flow), in line with the Captains markers.
It is a tight turn and narrow passage. It seems some
are encouraging the commission to block the small
"by pass" channel upstream from the bend to direct
all the flow around Settlers.
The green markers
that follow around the bend are lacking in numbers
now, with one green 20 ltr drum forming the first of
the down stream markers. A large gap exists between
this and the next marker up stream and it appears
important to stay close to the bank all the way
along this area.
Chowilla & Lock 6
From Saturday 6 December 2014, Chowilla Creek will
be open for small vessel navigation..
Lock 7 - Advanced Notice
Remedial works at Lock 7 are expected to commence
after the Australia Day long weekend in January 2015
and take around 12 weeks to complete. The works are
necessary to maintain the structural integrity of
the Lock chamber. During this period Lock 7 will be
closed to navigation..
Lock 8 & Lock 9 Pool Changes
The Lock 9 weir pool level is expected to
increase by up to 15cm above the full supply level
over spring, and the Lock 8 weir pool is expected to
increase by about 80cm above full supply level.
Over summer and autumn, the weir pools will be
lower than full supply level. Lock 9 is expected to
be drawn down to about 10cm below full supply level
and Lock 8 will be drawn down to about 60cm below
full supply level.
Both weir pools will be raised back gradually to
full supply level by winter 2015.