Flood warnings remain in place across parts of Adelaide and the Hills after heavy rain sent rivers and creeks rising overnight, with the latest update warning flooding could extend further downstream along the Onkaparinga River.
SES has released new Flood Advice for Old Noarlunga and Port Noarlunga where localised flooding is possible due to floodwater in the Onkaparinga River.
The community in the above highlighted area is advised to prepare their property for possible flooding and stay informed.
The Bureau of Meteorology minor flooding is also possible at Clarendon Weir.
Moderate to locally heavy rainfall has been recorded across the Onkaparinga catchment since Monday afternoon, causing widespread river and creek level rises.
At Clarendon Weir, the Onkaparinga River was sitting at 11.08 metres and rising at the time of the latest warning, just below the minor flood level of 11.20 metres.
The Bureau said the river could exceed the minor flood level early Tuesday morning, with further rises possible.
Further downstream, the Onkaparinga River at Old Noarlunga was recorded at 4.82 metres and rising, below the minor flood level of 5.00 metres.
It may reach around the minor flood level on Wednesday morning as upstream flows make their way downstream, with further rises possible.
Earlier flooding around Woodside and Oakbank has eased, with the focus of the warning shifting to the lower reaches of the river.
Police are also urging motorists to avoid driving through floodwaters at Pages Flat Road and Hindmarsh Tiers Road, Myponga.
Never drive through flooded sections of road, as water can be deeper, faster-flowing and more dangerous than it appears.
A separate minor flood warning also remains in place for the Torrens River catchment, where rising water has affected First Creek at Waterfall Gully Road.
That warning was issued at 9.39pm on Monday, with minor flooding possible along First Creek from late Monday evening.
While observations were not available for the creek at the time of the warning, the Bureau said it could reach around the minor flood level of 1.50 metres, with further rises possible.
The rainfall has caused widespread river and creek level rises across both catchments as wet weather continues across Adelaide and surrounding areas.
The SES is urging people to stay away from flooded rivers, creeks, drains and waterways and never drive, walk, swim or play in floodwater.
Motorists should obey road closure signs and plan ahead to avoid flooded roads, with conditions able to change quickly.
“South Australia has had the wettest winter in a decade. While there were no severe weather warnings or thunderstorm warnings overnight, the existing water levels in our catchments and rivers, and the wet conditions of the soil, has caused this minor flooding,” an SES spokesperson said.
“We are asking people to prepare their properties and stay informed by checking SES social media channels and our website for updates and monitoring for any warnings by the Bureau of Meteorology. Roads in the area may also close quickly, to monitor this please visit the Department for Infrastructure and Transport’s Traffic SA website.”
They also added that the worst affected areas have been “from overnight rain in Aldinga, Sellicks and the Eastern suburbs. However, at the moment our warning remains for the Old Noarlunga area.”
People requiring emergency storm or flood assistance can contact the SES on 132 500, while life-threatening emergencies should be reported to Triple Zero (000).
Residents are encouraged to continue monitoring Bureau of Meteorology and SA State Emergency Service warnings throughout Tuesday and into Wednesday as upstream flows continue to move through the Onkaparinga catchment.
For local emergency management warnings and advice click here.
Warning, rainfall and river information are available at http://www.bom.gov.au/australia/flood.
