Australian Government Bureau of Meteorology Tasmania
MINOR FLOOD WARNING FOR RIVER DERWENT
Issued at 9am on Friday 1 August 2014
by the Bureau of Meteorology, Hobart
Flood Warning Number: 3
High levels of Minor flooding continues throughout the middle reaches of the River Derwent and in the lower reaches below Meadowbank Dam following heavy rain across the catchment in the past three days.
Minor flooding is likely to develop about New Norfolk during Friday evening.
Strong rises have been observed in most tributaries of the River Derwent. River levels will remain high during Friday. Storages in the Derwent system are quite full with several dams currently spilling.
No further significant rainfall is forecast today, with snow falling about elevated areas.
Derwent above Ouse River
Strong river rises have been recorded in the majority of the upper River Derwent. The River Derwent at Glendhu peaked overnight near the Moderate flood level (5.0 metres) and is now easing slowly. Minor flooding to continue easing during Friday.
Minor flooding developed in the Ouse River at Ashton overnight, with a peak of about 2.4 metres. River levels have now fallen below the Minor flood level and will continue to ease slowly during Friday.
River levels are expected to remain below minor flood level at Ouse township.
Small river rises remaining below the Minor Flood Level.
Below Meadowbank Dam
High levels of Minor flooding have developed in the Lower River Derwent below Meadowbank Dam overnight Thursday and river levels are expected to peak during Friday morning.
Strong river rises have been observed about Macquarie Plains where the Minor flood level (4.0m) was exceeded early this morning. River levels throughout the lower reaches are expected to peak during Friday and start to ease slowly over the weekend.
River levels Tyenna River will continue to ease today. Localised flooding in adjacent creeks and surrounding low lying areas in the lower Tyenna River about Westerway to continue during Friday due to high levels in the Derwent.
River levels in the Styx will continue to ease today. Localised flooding in adjacent creeks and surrounding low lying areas in the lower Styx River around Bushy Park and Glenora expected to continue during Friday due to high levels in the Derwent.
Strong river rises will occur about New Norfolk overnight Thursday with river levels expected to peak above the Minor Flood Level (2.0 metres) during Friday afternoon.
Tidal variation at New Norfolk may produce localised flooding in adjacent creeks and surrounding low lying areas of the River Derwent early Friday morning, well in advance of the arrival of the main flood peak.
Predicted River Heights/Flows:
Based on observed and forecast rainfall, the following river peak heights are predicted:
River Derwent below Meadowbank Dam 6.0m (MINOR) Friday morning 01/08/2014
River Derwent at Macquarie Plains 4.6 - 4.9m (MINOR) Friday afternoon 01/08/2014
River Derwent at New Norfolk 2.0 - 2.4m (MINOR) late Friday afternoon 01/08/2014
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.
By 3:00PM EST on Friday 1 August 2014
Latest River Heights:
|Location||Height of River||Date/Time of Observation|
|Derwent River below Lk St Clair||2.51m steady||07:05 PM THU 31/07/14|
|Ouse River at Ashton||2.3m steady||06:30 AM FRI 01/08/14|
|Clyde River at Bothwell||1.2m steady||08:00 AM FRI 01/08/14|
|Clyde River at Hamilton||NA||NA|
|Derwent River below Meadowbank Dam||5.94m falling||08:30 AM FRI 01/08/14|
|Derwent River at Macquarie Plains||4.68m rising||08:41 AM FRI 01/08/14|
|TYENNA RIVER AT NEWBURY||1.51m steady||06:15 AM FRI 01/08/14|
|STYX RIVER AT BRUCES BRIDGE||1.65m falling||08:46 AM FRI 01/08/14|
|Derwent River near Bryn Estyn||3.94m rising||08:00 AM FRI 01/08/14|
|DERWENT RIVER AT NEW NORFOLK||1.73m rising||08:54 AM FRI 01/08/14|
For the latest rainfall and river level information see www.bom.gov.au/tas/flood/