river derwent in flood

Second update to Minor Flood Warning

Australian Government Bureau of Meteorology, Tasmania

Minor Flood Warning for the River Derwent

Issued at 1.19pm on Friday 30 July 2021

Flood Warning Number 3: RIVER OUSE MAY REACH THE MINOR LEVEL OVERNIGHT SATURDAY INTO SUNDAY.

River levels in the River Derwent below Meadowbank Dam are expected to remain elevated and around the minor flood level during Friday. River levels are elevated in many tributaries (including the upper Derwent, Nive, Florentine, Tyenna, Styx and Plenty). Flooding is not expected to extend downstream to Macquarie Plains and New Norfolk during Friday.

In the 24 hours to 9am Friday, widespread rainfall totals of 10 to 25mm were recorded in the Derwent catchment. Since 9am no significant rainfall have been recorded. A further 10mm of rainfall have been forecast in the upper catchment for the remainder of Friday, with more significant rain expected with a cold front on Saturday.

Strong and dangerous flows will be a hazard over the next couple of days.

River Derwent above River Ouse:

River levels are high along the Nive River and upper Derwent River.

River Ouse:

River levels are high along the River Ouse. The River Ouse at Ashton is currently at 1.28 metres and rising. The River Ouse at Ashton may reach the minor flood level (2.40 m) overnight Saturday into Sunday.

Tyenna River:

River levels are high along the Tyenna River.

Styx River:

River levels are high along the Styx River.

River Derwent below Meadowbank Dam:

Minor flooding is likely along the River Derwent below Meadowbank Dam. The River Derwent below Meadowbank Dam is currently at 3.76 metres and falling. The River Derwent below Meadowbank Dam is likely to remain around the minor flood level (4.10 m) overnight Friday into Saturday. The River Derwent at Macquarie Plains is currently at 2.28 metres and steady. The River Derwent at Macquarie Plains is expected to remain below the minor flood level (4.00 m) during Friday. [The River Derwent at Plenty is pictured, above, at 1.30pm today].

River Derwent around New Norfolk:

No flooding is expected.

Flood Safety Advice:

FloodSafe advice is available at www.ses.tas.gov.au

Road closure information is available at www.police.tas.gov.au

For emergency assistance call the SES on telephone number 132 500.

For life threatening situations, call 000 immediately.

Next Issue:

The next warning will be issued by 03:30 pm EST on Saturday 31 July 2021.

Latest River Heights:

LocationHeight of River (m)TendencyDate/Time of Observation
River Derwent below Lake St Clair2.15Steady11:30 AM FRI 30/07/21
River Ouse at Ashton1.28Rising11:30 AM FRI 30/07/21
River Ouse at 3B Weir0.97Steady11:30 AM FRI 30/07/21
River Clyde at Bothwell0.16Steady09:15 AM FRI 30/07/21
River Derwent below Meadowbank Dam3.76Falling11:35 AM FRI 30/07/21
River Derwent at Macquarie Plains2.28Steady11:42 AM FRI 30/07/21
Tyenna River at Newbury0.90Steady10:00 AM FRI 30/07/21
River Derwent at New Norfolk0.88Rising12:17 PM FRI 30/07/21

This advice is also available by dialling 1300 659 210. Warning, rainfall and river information are available at www.bom.gov.au/tas/flood. The latest weather forecast is available at www.bom.gov.au/tas/forecasts.

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