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Flood Management and Recovery 2011 Loddon and Campaspe flood

Flood Management and Recovery 2011 Loddon and Campaspe flood . Phillip Hoare Manager Business Services Goulburn-Murray Water. Goulburn-Murray Water. Recent history. Tullaroop Reservoir – photo taken of outlet tower on 5 July 2010. Storage level ~ 4%.

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Flood Management and Recovery 2011 Loddon and Campaspe flood

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  1. Flood Management and Recovery 2011 Loddon and Campaspe flood Phillip Hoare Manager Business Services Goulburn-Murray Water

  2. Goulburn-Murray Water

  3. Recent history Tullaroop Reservoir – photo taken of outlet tower on 5 July 2010. Storage level ~ 4%. Tullaroop Reservoir – photo taken of outlet tower on 9 September 2010. Storage level is 100%.

  4. Bureau of Meteorology forecasts Approx 60% chance of exceeding median rainfall in Nov-Jan period Median rainfall for Loddon catchment is 88 mm Total rainfall received during Nov-Jan period was 397 mm at Cairn Curran 97.8 mm fell on 14 Jan

  5. Overview • Major areas of concern were quickly evident • Lake Eppalock - 100.5% rainfall in December/January • Cairn Curran 93% - air space only approx 10,000ML • Record flows passing storages on both systems • Major impacts d/s communities & irrigation areas a certainty

  6. The ‘Inland Sea’

  7. State arrangements for emergency management • Victorian State Emergency Services (SES) lead agency • Responsibility to coordinate emergency response • Bureau of Meteorology (BoM) • Responsible for flood warnings • Municipal Councils • Responsible for community awareness, information systems, identifying and treating risks • Water Authorities (G-MW) • Operating assets appropriately

  8. Campaspe system • Lake Eppalock – 304,650ML capacity • Fixed crest spillway • Peak January inflow 137,900ML/d • Peak outflow 80,300ML/d • Total January inflow • 10 times previous record • 180 times average

  9. Laanecoorie spillway

  10. Laanecoorie spillway after flood

  11. Eppalock spillway road after water had receded

  12. Irrigation Areas • Torrumbarry • time to prepare - natural carrier interaction/ operation - many “fronts” at once • Rochester Campaspe • rapid impact - office inundated - community angst - storage management - warnings • Loddon Valley • major asset damage - historic role/ expectation - unauthorised works - supporting control Ovens Murray Loddon Broken Campaspe Goulburn Bullarook

  13. Irrigation Areas-What we do in floods • “Flood Mode” • Intention • replicate natural conditions • prevent cross catchment flows • Actions • channel system ‘shut down’ • floodways opened • subways inspected/ monitored • responded to issues &requests • Complexities !!!! Simple !!

  14. Echuca Murray Goulburn Factory Campaspe River Rochester Hospital Rochester township

  15. G-MW Rochester Office – morning Saturday 15 January 2012

  16. Regulator washed out from flood water

  17. Flooding – Kerang Power Station

  18. Kerang township

  19. The recovery - Initiatives Issues to address • Infrastructure damage • Irrigation demand • Customer contact • Infrastructure status • Dewatering • Resources

  20. Initiatives • Integrated “Live” system information • Centralised phone management • Coordinated residual water management

  21. Initiatives – Data integration • Various systems – Enormous data • Integrated system analysis • Information - Made available / displayed spatially using GIS system – DEKHO • Information users • G-MW incident control room & call centre • Regional offices & operational staff • Construction crews • Other control agencies – SES, Council • Customers & Media – Web based information

  22. What it looked likeService requests & severity This area still had irrigation demand in place – no floods This area still had irrigation demand in place Highlighted area to do works to allow water deliveries to occur

  23. Web based system status

  24. Initiatives – Phone management • Customer contact – 24/7 • Modernisation – Central System Operations • Operational staff focused on response • Customers service • Responsive • Consistent • access to current data and ICC

  25. Initiatives – Residual water • Dewatering – 2012 • Hotline • Coordinated agency approval • Mapping • Media • Timeliness • Water quality • Capacity

  26. Lessons – Incident establishment Initial stages • Incident triggers – clear & concise • Preparedness – Scenario training • ICC – Administration & IT • Communication – Situation reports • Local knowledge – Control agencies • Staff & public safety

  27. Lessons -Response • Effective incident management = Information • The value of integrated accessible info • Call centre - 24/7 contact management • Established operating procedures • Cost – financial accounting ~$5million

  28. Lessons - Recovery • Communications • Removing residual water • Review & improve practices / knowledge • Be part of community process • Events>>>>design = unanticipated outcomes • Recognise staff • Communications

  29. Questions? Phil Hoare 03 5826 3500 philliph@g-mwater.com.au

  30. Flood Damage - Channel bank

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