Flood Risk in South Australia. Hazard Leaders in SA Animal and Plant Disease. Zone Emergency Management Ctees. Flood Risk in SA 11/06/2013

Transcription

1 Flood Risk in South Australia 29 May 2013 Ed Pikusa Principal Project Officer Risk Assessment, Measurement and Mitigation SA Fire and Emergency Services Commission (SAFECOM) Renmark 1956 OUTLINE Flood Risk in South Australia Large, Medium and Small Catchments Hazard Leaders in SA Animal and Plant Disease Earthquake Escape of Hazardous Materials Extreme Weather Flood Human Disease Riverbank Collapse Rural Fire Terrorism Urban Fire PIRSA DPTI SafeWork SA SES DEWNR Health DEWNR CFS SAPOL MFS SOUTH AUSTRALIAN HAZARD MANAGEMENT Zone Emergency Management Ctees SA divided into 13 regions 11 are recognised as Emergency Management Zoneswhich are based on SA government regions Zones: All Hazards in their areas Hazard Leaders: One Hazard everywhere Flood Risk in SA Most economically damaging Direct and Indirect impacts Death (moving through floodwater) Disruption (services, evacuation, recovery) 1

2 11/06/ Interstate Inquiries Properties vulnerable to 1 in 100yr floods Sturt River River Murray Towns Gawler River First to Fifth Creeks Western Adelaide Brown Hill and Keswick Creeks 4 Reports 445 Recommendations Around 8,500 SA properties 5 Risk Assessments ~6,800 properties (80%) Gawler River First to Fifth Creeks Western Adelaide Patawalonga River Murray Theme 1: Leading change and coordinating effort 15 Key Recommendations for SA Amalgamated similar issues into larger themed recommendations. The Inquiries did not prioritise their recommendations. FIT recommendations are also not prioritised. They represent new work or business, currently unfunded Integrate reservoir and SA River Murray planning and operation into flood management arrangements Prepare policies to support decisions to evacuate before and during floods Clarify responsibilities for management of watercourses, levee banks and other infrastructure Theme 2: Understanding Risks Improve the State Flood Risk Assessment Develop and Maintain knowledge of Vulnerable Persons and Communities Theme 3: Communicating and educating people about risks Trial, develop and implement a Flood Intelligence Decision Support System Create a Flash Flood Warning Service for South Australia Some issues not covered, not in Report Climate Change and Sea Level Rise Issues across flood and other hazards, : Bushfire increasing runoff/flood volumes Flood impacts on Riverbank Collapse Earthquakes and dam failure Health risks following flooding (mosquitoes, contamination etc) Theme 4: Partnering with those who affect change Undertake a Flood Warning Monitoring Review Recommendations Theme 5: Empowering Individuals and communities to exercise choice and take responsibility The Community FloodSafe Program Theme 6: Reducing risks in the built environment Assess the need for a safety regulator to manage structural failure risks of dams, levee banks and decommissioned mine sites Reform Land Use Planning Regulation to explicitly include Flood Risk Review regulation of Hazardous Materials in times of flood Increase Regulation of the construction and maintenance of levees Theme 7: Supporting capabilities for disaster resilience Assurance of capacity and capability of agencies and organisations with functions under the SEMP Undertake a Flood Response Capacity Review Stories Large Rivers Large River Medium River Small River Other flood risks 2

3 Total Travel Time Hume to Renmark ~ 28 days (4 weeks) Include modelling and forecasts, 4-6 weeks warning Lots of warning Water can persist for months Renmark particularly vulnerable Flood Renmark Hospital Local population National Hwy ~3-6 month inundation plus recovery 1 in 100 level Hospital bank activated Evacuation likely Hospital services? Other services? Transport, accommodation and supply chain issues. 3-6 month evacuation, plus recovery Medium River The Gawler River 3 Rivers have BOM warning systems Gawler Torrens Onkaparinga 6-12 hr warning 3

4 11/06/2013 Lower Gawler River Lower Gawler River Virginia, Two Wells, Angle Vale, Lewiston Buckland Park (?) hr warning Lower Gawler floodwater lingers 2005 flood, 18 months recovery program. Small River Brown Hill and Keswick Cks Small River - Brown Hill and Keswick Creeks Flash Flood catchment 2-3hr between rain and flood No formal warnings 5,000-7,000 properties affected 7 hospitals, 8 aged care facilities Adelaide Airport Industrial suppliers Transport disruptions. Flooding Extra Effects Evacuation, short-term and long-term May be part of a larger evacuation Repair and recovery Supply disruption power, transport, suppliers Mosquitos and disease risk (e.g. MVE) Government services (inundated, preoccupied) Climate change effects (coastal inundation) Infrastructure failure flooding (dams, levees, pump stations) Coastal Flood Risk 4

5 STOCKPORT Mannum 1956 Questions? Thank You 5