Australian Government Bureau of Meteorology, National Water Operations Initial Minor Flood Warning For The Onkaparinga River Issued at 01:44 PM ACST on Monday 24 August 2026 Flood Warning Number: 1 MINOR FLOODING POSSIBLE AT OAKBANK FROM EARLY TUESDAY MORNING WITH FORECAST RAINFALL Moderate to possibly locally heavy falls are forecast about the Onkaparinga catchment during the remainder of Monday and into Tuesday. This forecast rainfall may cause minor flooding along the Onkaparinga River at Oakbank from early Tuesday morning. Upper Onkaparinga River above Verdun: Minor flooding is possible along the Upper Onkaparinga River above Verdun. The Onkaparinga River at Oakbank is currently at 0.19 m and steady, below the minor flood level. With forecast rainfall, the Onkaparinga River at Oakbank may reach around the minor flood level (1.17 m) from early Tuesday morning. Flood Safety Advice: Don't drive, walk, swim or play in floodwater because it is dangerous. Stay away from flooded drains, rivers, streams and waterways. Obey road closure signs. Plan ahead so you don't drive on flooded roads. Check the ABC and local media for updates. The situation can change quickly, so stay informed. For local emergency management warnings and advice visit www.ses.sa.gov.au/incidents-and-warnings/incidents-and-warnings-map/.} For emergency assistance call SES on telephone number 132 500. In life-threatening emergencies, call 000 (triple zero) immediately. Next issue: The next warning will be issued by 10:00 AM ACST on Tuesday 25 August 2026. Latest River Heights: Onkaparinga River at Charleston,0.05,steady,10:47 am Mon 24/08/26 Onkaparinga River at Woodside,0.19,steady,12:46 pm Mon 24/08/26 Western Branch Creek at Tiers Road,0.07,steady,11:41 am Mon 24/08/26 Lenswood Creek at Swamp Road,0.23,steady,11:26 am Mon 24/08/26 Onkaparinga River at Oakbank,0.19,steady,12:06 pm Mon 24/08/26 Onkaparinga River at Verdun,-0.03,steady,1:25 pm Mon 24/08/26 Aldgate Creek at Aldgate (Euston Rd),0.43,steady,12:14 pm Mon 24/08/26 Onkaparinga River at Houlgraves,3.51,steady,1:25 pm Mon 24/08/26 Onkaparinga River at Clarendon Weir,9.64,steady,12:18 pm Mon 24/08/26 Onkaparinga River at Old Noarlunga,1.12,steady,1:15 pm Mon 24/08/26 This advice is also available by dialling 1300 659 219. Warning, rainfall and river information are available at http://www.bom.gov.au/australia/flood.