Stormwater Drainage Asset Management Plan - District Council of ...

- 1 -1. EXECUTIVE SUMMARYBackgroundThe District Council of Mount Barker is on journey toimplement contemporary best practice asset management.As part of this journey, Council is developing a number ofasset management plans. These include:• Stormwater Drainage• Transport• CWMS• Buildings• Recreation and Open SpaceThis is a first generation ‘core’ asset management plan thatreflects Council’s current competency in this area. Thereare a number of assumptions that have been made in thepreparation of this plan and the confidence level overall ofthe asset data is XX. This plan will be reviewed regularlyand updated as Councils maturity in asset managementincreases. Council’s current maturity level for themanagement of stormwater drainage assets isWhat Council ProvidesCouncil provides a stormwater drainage infrastructureasset network across the district to mitigate risksassociated with flooding to protect private property andpersonal safety of its residents. It works in partnership withthe water catchment management boards to protect andenhance our waterways which facilitate an effectivedrainage system.Council’s stormwater drainage network consists of thefollowing asset types:Asset TypePipesQuantity94.7kmsPits 2782Inlets/Outlets 350Structures 16Open Channels5.3kmsStorage Basins 42What does it Cost?There are two key indicators of cost to provide thestormwater drainage service. The life cycle cost being theaverage cost over the life cycle of the asset and the totalmaintenance and capital renewal expenditure required todeliver existing service levels in the next 10 years coveredby Council’s long term financial plan.The life cycle cost to provide the stormwater drainageservice is estimated at $1.14M per annum. Council’splanned life cycle expenditure for year 1 of theinfrastructure asset management plan is $0.95M whichgives a life cycle sustainability index of 83%.The total maintenance and capital renewal expenditurerequired to provide the stormwater drainage service in thenext 10 years is estimated at $11.43M. This is an averageof $1.14M per annum.Plans for the FutureCouncil plans to operate and maintain the stormwaternetwork to achieve the following strategic objectives.1. Ensure the stormwater network is maintained at asafe and functional standard as set out in thisinfrastructure asset management plan.2. Ensure the network is planned appropriately to caterfor future growth3. Maximise an assets useful life whilst minimisinglifecycle expenditure4. Maintain a high level of community satisfaction in thedelivery of stormwater drainage servicesMeasuring our PerformanceQualityStormwater drainage assets will be maintained in areasonably usable condition. Defects found or reportedthat are outside our service standard will be repaired. Seeour maintenance response service levels for details ofdefect prioritisation and response time.FunctionOur intent is that an appropriate stormwater drainagenetwork is maintained in partnership with other levels ofgovernment and stakeholders to provide a safe andeffective system that minimises the risk of flood damagewhilst enhancing the natural environment.Stormwater drainage assets will be maintained to ensureefficient operation and protect public safety. We need toensure key functional objectives are met:• Free flowing drainage system• Assets in good condition• Repairs are made in a timely manner• Effective flood protection is provided to themajority of residents• The service is cost effective and sustainable inthe long-termSafetyCouncil will routinely inspect critical stormwater assets andprioritise the repair of defects in accordance withmaintenance standards to ensure they are safe.District Council of Mount Barker – Stormwater Drainage Infrastructure Asset Management Plan