SUSTAINABLE STORMWATER STRATEGY 2 017- 37
Sustainable Stormwater Strategy A CONTENTS
1. INTRODUCTION...... 1 2. BACKGROUND...... 4 3. NORTHERN URBAN CATCHMENTS...... 12 4. NORTHWEST CATCHMENT...... 16 5. CENTRAL CATCHMENT...... 20 6. NORTHEAST CATCHMENT...... 24 7. NEW RESIDENTIAL DEVELOPMENTS...... 30 8. INDUSTRIAL & COMMERCIAL ZONES...... 36 9. GREEN WEDGE...... 42 10. PARKS, RESERVES & WATERWAYS...... 48
B Sustainable Stormwater Strategy 1. INTRODUCTION
In Victoria, the primary objective of a local government, as stated in the Local Government Act 1989, is “to endeavour to achieve the best outcomes for the local community having regard to the long term and cumulative effects of decisions”. Council is responsible for the provision, maintenance and renewal of local drainage infrastructure. Council must therefore consider a number of factors – including social, economic, environment and health factors – to meet its drainage responsibilities.
This Sustainable Stormwater Strategy provides a strategic framework and policy direction for the City of Greater Dandenong, having regard to its legislative requirements, the long-term management of its assets and of flood risks. This strategy builds upon the current Council Plan 2013-2017 and existing implementation of policy, whilst providing further targeted directives for consideration in the development of future Council’s Annual Plans through the Planning Cycle.
It also aims to continue to develop the City’s potential to attract further investment and to improve the civil infrastructure to support projected population growth and future development.
This strategy will be reviewed in 5 years.
Sustainable Stormwater Strategy 1 INTRODUCTION
Vision Structure of The Greater Dandenong Sustainable the Strategy Stormwater Strategy has been developed and guided by the following The City of Greater Dandenong is one aim and vision: of Melbourne’s major growth centres, is a major industrial hub and includes a significant proportion of the Green Wedge. It includes residential areas To develop and – new and old – in the suburbs of Dandenong, Springvale, Noble Park, manage the drainage industrial areas in Dandenong South and rural areas in Lyndhurst and and waterways Bangholme. As a result, our priorities and the challenge we encounter vary assets to create a between areas. clean, attractive, The Strategy provides an overview of the challenges we encounter across these safe, resilient and different areas and how we aim to tackle environmentally them. Figure 1 shows the different areas consider as part of the strategy, each sustainable City, with their own set of objectives where current and and actions: future generations THE NORTHERN CATCHMENTS – areas predominantly residential enjoy a high quality where our main priority is to protect our community from flood damages of life. (pgs 12–27) Reporting
NEW RESIDENTIAL AREAS – Key documents that will be used to new residential areas where our assist in monitoring and reporting on this Key Objectives main priority is to maintain high strategy and its key actions include: amenity features (pgs 30-35) 1. Annual Update and Quarterly Reports The purpose of the Strategy is to for the Sustainable Stormwater provide direction for Council and its Strategy key stakeholders, including its strategic INDUSTRIAL AND COMMERCIAL partners, to support the delivery of the ZONES – a mix of older 2. Annual Business Plan and Updated following objectives within the City of commercial/industrial areas and Council Plan. Greater Dandenong: newer ones in Dandenong South where our main priorities are to Each of these key documents will review, 1. Understand, manage and reduce protect local businesses from flood update and report on: flood risks; damages and minimise pollution • Identified indicators; 2. Understand, manage and mitigate (pgs 36-41) • Progress of key strategic priorities; pollution risks; and 3. Understand community’s need GREEN WEDGE – mostly rural • Recommended actions for and expectations in respects to areas where our main priorities are implementation by responsible stormwater management; to protect and assist our community during floods and to protect existing Business Units. 4. Engage with residents and local ecological values (pgs 42-47) businesses to improve our asset management; and PARKS, RESERVES AND 5. Manage and enhance our WATERWAYS – Council’s role is to waterways and parks for the provide community spaces, such as benefit of our community. parks, sporting facilities and green open-spaces and, in line with the Council Plan, we aim to maintain parks to a high standard (pgs 48-55)
2 Sustainable Stormwater Strategy Figure 1 – Areas of the Strategy
Section 1: Northern Urban Catchments Police Rd Section 2: New Residential
estall Rd Developments
W Princes Hwy Section 3: Industrial & Dandenong Creek Monash Fwy Commercial Zones Section 4: Green Wedge Mile Creek Section 5: Parks & Heatherton Rd Reserves Yarraman Section 5: Waterways Creek
Stud Rd
Lonsdale St
Lower Cheltenham Rd Dandenong Creek
Dandenong Bypass South Gippsland Fwy
Springvale Rd
Hutton Rd Greens Rd
Mordialloc South Gippsland FwyEumemmerring Creek Creek
Mor
nington Peninsula Fwy
East Link
Patterson Creek
Thompson Rd
Thompsons Rd Dandenong Hastings Rd
Sustainable Stormwater Strategy 3 2. BACKGROUND
In order to provide the best 2. Melbourne Water – Under the Importantly, DELWP recently released outcomes for its community and “Statement of Obligations” issues the Draft Floodplain Management meet its obligations under the Local by the Minister for Water under the Strategy “in response to the flood Government Act 1989, Council works Water Industry Act 1994, Melbourne emergencies that followed record with a number of stakeholders and Water’s obligations include the rainfall across Victoria in 2010–2011”. must comply with key legislation provision of a “safe and effective The draft strategy indicates that the and documents. system for dealing with storm Victorian Government will focus on flood A brief description of the key runoff, a reduced risk of flooding in alleviation and prevention. As a result, stakeholders and key legislation priority areas and the prevention of the funding and implementation of are given below. inappropriate development in local flood studies are initiatives placed flood-prone areas”. As such, forward by the State government. The Melbourne Water is responsible City of Greater Dandenong generally for waterway and drainage supports the vision and objectives of the Key stakeholders infrastructures in catchments greater draft strategy, as this document than 60ha. Melbourne Water is also considers a wider range of flood The key stakeholder groups of responsible for the development of mitigation measures compared to the community who are users of Drainage Schemes in collaboration previous strategy, including non- the stormwater drainage network, with Council. structural measures. are affected by it, or influence its management include: Melbourne Water is also responsible 6. The Environment Protection for waterway management in Authority (EPA) is an independent 1. Council – Council is responsible municipal areas. In the case of authority that reports to DELWP. Its for carrying out the management Greater Dandenong, the waterways responsibilities include protecting functions on local drainage within include Mile Creek and Dandenong Victoria’s waters and therefore catchments smaller than 60ha and Creek. regulating pollution through excluding assets managed privately environmental laws, policies and and by VicRoads. 3. VicRoads – VicRoads is the regulatory controls. This agency coordinating road authority for State Under the objectives of the Local will respond to pollution incidents roads (freeways and declared arterial Government Act 1989, Council has and assist the emergency response roads). Therefore, it is responsible a duty of care to provide equitable during flood events. The City of for carrying out the management and appropriate services for the Greater Dandenong regularly works functions of pits and pipes associated community. Council must also ensure in collaboration with the EPA, to with freeways and declared arterial that those services are managed ensure Council’s compliance and roads. Demarcation of responsibilities efficiently and effectively. Council enforcement activities deliver better between VicRoads and Council, is responsibilities include advocating outcomes for the community. illustrated in Figure 1.1. to both the Commonwealth and 7. Residents – Private drains should Victorian Government agencies to 4. Victoria State Emergency Service be managed, operated and cared improve and upgrade drainage assets (VICSES) – VIC SES is the control for by private parties. The property not owned by Council. agency for flood, storm, tsunami owner is responsible for the internal and earthquake events in Victoria. Council has developed a number of stormwater drains and any section They are responsible for managing documents to assist in the discharge of the private drain outside of their responses to these emergencies of the City of Greater Dandenong’s property, until it connects to the legal and helping communities to prepare stormwater drainage management point of discharge. The property through planning and education. One duties. These are discussed in on owner is also responsible for the of its primary responsibilities is to page 7. reinstatement of any assets disturbed coordinate emergency preparation during the maintenance and repair and response for flood event. VIC As a land use planning authority, to private drains, including Council SES work in partnership with local Council also needs to ensure assets such as footpath. appropriate planning controls (e.g. councils through their Floodsafe overlays, planning conditions) are program (http://www.ses.vic.gov.au/ Whilst these private drains may placed and enforced, to ensure that prepare/floodsafe). connect to Council’s drainage all new developments comply with infrastructures, Council is under no 5. The Department of Environment, stormwater objectives (quantity statutory duty to inspect, maintain Land, Water & Planning (DELWP) and quality management) and/or and repair these private drains. – DELWP (formerly the Department contributes to a Melbourne Water of Primary Industries) is responsible, Drainage Scheme. as its name suggests, for water management and the management of a number of reserves across Victoria.
4 Sustainable Stormwater Strategy VicRoads’ Code of practice for operational VicRoads’ from from – Consultation Draft (June for public roads responsibility for consultation purposes only 2013). Draft prepared
1 1 Figure 1.1 – Drainage Responsibilities Figure
Sustainable Stormwater Strategy 5 BACKGROUND
Legislation Through infrastructure provision, Council has to comply with various legislative requirements, Standards and Codes of Practice, which determine Council and other stakeholders’ responsibilities relative to stormwater management. These include: • Local Government Act 1989 – The primary objective of a local government, as stated in the Local Government Act 1989, is “to endeavour to achieve the best outcomes for the local community having regard to the long term and cumulative effects of decisions”. As such Council is responsible for the • Environment Protection Act 1970 developments are considered in light of provision, maintenance and renewal – This act enables the Environment the flood risk and existing overland flow of vested drainage infrastructure Protection Agency (EPA) to work paths. within catchments smaller than 60ha. with the community to protect and • Clause 56 of the Victoria Planning improve our environment, including • Victorian Building Act 1993 and Scheme – this clause, applicable for our waterways. Victorian Building Regulations residential subdivision only, provides 2006 – This Act and associated • Water Act 1989 – This legislative sustainable water management regulations aim to regulate building document details the responsibility requirements, including the use of work and building standards. Under of residents and land owners in best practice water sensitive design the regulations (Section 610), Council respect to water management, techniques to conserve, re-use possesses regulatory power to including stormwater management. and recycle water and manage control private stormwater discharge Under the Act (Section 16) residents the quality of stormwater runoff. to the municipal drainage system. The and property owners are liable for These requirements generally design of every private stormwater flow of water arising from their land. result in the construction of water drainage system must also be Additionally, they have a duty of care quality treatment devices – such as approved by a registered (building not to interfere with reasonable2 flow raingardens and wetlands – that are practitioner) building surveyor. or by negligent conduct interfere ultimately adopted by Council or with any flow of water onto any land. Melbourne Water. The clause is not • Under the regulations (Section Council is not however delegated however, applicable to a significant 807), areas liable to flooding are under this Act, and have therefore proportion of the development to be incorporated as ‘designated limited enforcing power. currently occurring in Greater special areas’ in the municipal Dandenong, such as multi-unit and district maps. Council may therefore The Victorian Government is currently infill developments. attach conditions, such as minimum reviewing, updating and consolidating finished floor levels, to those areas, the Water Act 1989 and the Water • State Environment Protection to ensure that new developments are Industry Act 1994. The Exposure draft Policies (SEPP) 2003 (amended considered in light of existing flood was released in 2014 and it is aimed in 2006) – the SEPP sets out risk and overland flowpaths. that the new Act will come into effect environmental quality objectives in 2016. Key changes in the Water and indicators to measure whether • Emergency Management Bill Exposure Draft that impact on beneficial uses are being protected. Acts – The Victorian Emergency Council include recognition of Council Clause 17 outlines Council’s role in Management Act 1986 was passed as a drainage authority and the right ‘protecting surface waters through a to provide for the organisation of of Council to extract and re-distribute number of responsibilities, including emergency management in Victoria. stormwater from its assets. stormwater, floodplain, drainage and The City of Greater Dandenong vegetation management [...]’. It may Council must prepare and maintain a Planning and Environment Act 1987 therefore be argued that Council municipal emergency management – This Act was created to establish must maintain the function of vested plan under the Emergency a framework for planning the use, water quality assets – such as Gross Management Act 1986. The current development and protection of land Pollutant Traps and raingardens – to Municipal Emergency Management in Victoria in the present and long- meet its SEEP obligations. Plan gives due consideration to flood term interests of all Victorians. The risk and further details are given in on Planning Scheme allows for stronger page 7. planning controls in flood-prone 2 Matters to be taken into account into consideration to areas (e.g. Special Building Overlay, determine “reasonable flow” are defined in Section 20 of Urban Floodway Zone), to ensure new the Water Act 1989.
6 Sustainable Stormwater Strategy 3. Long-Term Financial Strategy – objectives of MW’s Port Phillip Supporting Council Council has limited resources, both and Westernport Region Flood in terms of personnel and financially. Management and Drainage Strategy documents Long Term Financial Strategy plans (2007). The FMP includes an action This strategy has been developed for the ongoing financial sustainability plan, which outlines the agreed based on a review of Council’s 2009 of the Council and works to ensure approach to managing existing, Municipal Drainage Strategy. This Council assets are maintained in the residual and future flood risks Sustainable Stormwater Strategy future. This document provides a within the City of Greater Dandenong. has been developed to account for blueprint for Council to work from. progress made since and to promote The Flood Emergency Management an integrated approach to storm The major financial challenge facing Plan (FEMP) developed water management. Council is funding its asset renewal. collaboratively with VIC SES and Council’s assets were largely Melbourne Water, details flood risks This Strategy is informed by a constructed between the 1960s and within the municipality. The FEMP number of supporting documents, 1980s and would need to be replaced falls under the Municipal Emergency as detailed below: over the coming decades. The Long Management Plan, which considers a 1. Council Plan 2013-2017 Term Financial Strategy provides a wider range of potential risk, including – The responsible framework that balances fire and storm. The FEMP documents current Council Plan has been the need for more infrastructures how Council in partnership with developed to guide the current funding and sustainable financial the control agency and other Council over the four years of its management. stakeholders will plan, mitigate, elected term. One of the priorities prepare, respond to and provide relief 4. Flood Mapping – In partnership of the current Plan is for an effective to assist the Greater Dandenong with Melbourne Water, Council has planning and management of community in recovering from undertaken an extensive modelling Council’s infrastructure to ensure flood events. it is responsive to contemporary exercise to assess flood risks in the environmental conditions (Priority northern areas of the municipality. Whilst the FMP and the FEMP 4.5). Council has developed an The results of this work are discussed are not public documents, the Asset Management Policy to achieve in the Northern Urban Catchments findings and recommendations of this objective. section of this document and are these two documents have been Sustainable 2. Asset Management Policy ultimately, intended to be included used to inform the – Council as an overlay into the Greater Stormwater Strategy. has developed its Asset Management Dandenong Planning Scheme. Policy to ensure comprehensive and effective asset management practices 5. Flood Operational Documents – are adopted by Council. This policy Through the review and development should be considered as an extension of Greater Dandenong’s Risk Register, of Council’s commitment “to the flooding has been recognised as one identification and management of all of the communities’ highest risks In partnership risks associated with the performance that can affect not only residents, and delivery of council function and but people that work in or travel with Melbourne services” (Council Risk Management throughout the municipality. This Policy, adopted in January 2015). risk came into reality in February Water, Council 2011, during which prolonged rainfall The Asset Management Policy is resulted in flash flooding across the has undertaken an supported by the Asset Management municipality. During that month alone, Strategy and the Asset Management Council received over 700 requests extensive modelling Plans, which will ultimately improve from residents regarding drainage and exercise to assess Council’s asset maintenance and flood issues. renewal procedures. A drainage specific Asset Management Plan The Flood Management Plan flood risks in the has been developed to document (FMP) has been developed in the level of service associated with response to an identified need to northern areas of the drainage infrastructure. improve collaboration between municipality. flood management agencies The above Asset Management and follows the recommendation documents consider the life cycle of of Victoria Auditor General for our assets, life from inception through Managing stormwater flooding to disposal. Relevant financial risks in Melbourne. This operational forecasts to maintain the assets document facilitates the collaboration in a safe and functional condition of the City of Greater Dandenong, subsequently inform Council’s long Melbourne Water and the Victorian term financial strategy. State Emergency Service (VICSES) at a local level to implement the
Sustainable Stormwater Strategy 7 BACKGROUND
6. Integrated Water Management – With the view of laying the foundation The report also considers the impact Council encourages a sustainable to the Integrated Management Plan, of forecast urbanisation and climate approach to water management Council has commissioned Alluvium change, with future development and Council is committed to the Consulting to undertake a preliminary predicted to be the larger influence development of an Integrated Water analysis of the water cycle across the on water quality and stormwater Management Plan (Council Plan, municipality. This project was partially infrastructure. The creation of new Priorities 3.2). Whilst it must be funded by Melbourne Water and growth areas and forecast infill recognised that Council is not a overseen by a multi-agency reference development will result in an increase of Water Corporation (such as South group. The resulting water balance is impervious areas within the municipality, East Water and Melbourne Water), shown in Figure 2 below: as illustrated in Figure 3. This will Council is a significant water increase the total volume of stormwater consumer. Council is therefore well runoff and pollutants discharging to placed to promote a more efficient the waterways, which will result in and sustainable use of drinking water increased pressure on the existing by the community. drainage infrastructure.
Figure 2. Current water balance for City of Greater Dandenong3
3 from Alluvium’s Integrated Water Management Background Report (March 2014)
4 from Alluvium’s Integrated Water Management Background Report (March 2014)
8 Sustainable Stormwater Strategy Figure 3. Future forecasts of imperviousness within Greater Dandenong4
Sustainable Stormwater Strategy 9 BACKGROUND
Given current planning controls available the land industry. The standard to Council, there is a real challenge in specification and standard drawings SPECIAL managing urban development. Council have been updated to account will require upgrading its drainage for changes in National Design CHARGE infrastructure (using available resources), Standards, changes in legislation stronger planning rules and to advocate and/or to reduce maintenance etc. SCHEMES for additional investment from Melbourne This covers all civil works aspect, Water, if it wishes to successfully tackle including road and drainage items. Section 163 of the Local this pending challenge (Alluvium, 2014). The Drainage Design Standards Government Act 1989 allows Council may need to consider Local have also been updated to include Planning Amendments and/or Special council to declare a special specifications for Water Sensitive Charge Schemes to ensure stormwater rate or a special charge to Urban Design (WSUD) assets. This drainage infrastructure is able to enable councils to provide will ensure that Council inherits maintain the current level of service. fully functioning WSUD assets at a service or scheme if the These tools, in conjunction with Council the completion of a development council considers that doing Design Standards, would ensure better and at handover (i.e. the end of so would have special benefits environmental outcomes. Defect Liability Period). Concurrently, to those required to pay the 7. Council Design Standards – Council Council is improving its asset rate or charge. has recently completed the review management systems, to improve of council’s standard specifications maintenance activities and its If a property is at risk of for civil works. These documents long-term financial forecast. flooding, it is reasonably are used by land developers and easy to demonstrate a consulting engineers working in direct benefit. It would be a much more difficult exercise to demonstrate that the benefits apply to properties upstream of flooding as they are not directly impacted, though they may contribute towards the problem. A drainage scheme which sought to improve urban aesthetics through the use of streetscape raingardens, may be likely to be capable of establishing a special benefit (i.e. to the property)
Council encourages a sustainable approach to water management…
10 Sustainable Stormwater Strategy Sustainable Stormwater Strategy 11 3. NORTHERN URBAN CATCHMENTS
The City of Greater Dandenong is densities, with a subsequent increase predominantly a residential and in the impervious areas. The amount industrial area, with sections of rural of impervious surfaces in the region is FLOOD land in the south. The majority of the forecast to continue to increase. This has residential areas are located in the a direct impact on the capacity of the MAPPING northern section of the city (Figure existing stormwater drainage system. 4) and are serviced by underground While each new development or increase INFORMATION drainage assets, as illustrated in in density by itself will only cause a Figure 5. relatively small increase in downstream The 100yr ARI flood mapping information is now used as a Key Strategic challenges for these flow, the cumulative effects of a number areas include: of similar developments will be evident in planning control overlay by a major storm event, which could result Council. The information is • Managing flood risks; and in significant damage and loss. used to inform: • Managing increased demand for new Additionally, there is legacy of under and improved drainage systems. capacity stormwater network systems • The Council’s planning in the urban area and roads were not processes, to ensure In 2011 the population of the City always designed as overland floodways. new developments are of Greater Dandenong was 135,605 As a result, other less-defined overland (Australian Bureau of Statistics, 2011) considered in light of the flow paths exist within the municipality and the number of households were flood risk and existing which may put properties and/or 48,986 with an average of 2.8 people overland flow paths; dwellings at risk. per household. It is estimated that the population will increase to over 183,000 Under the Building Regulations 2006 • The Flood Emergency residents by 2026 (SGS’s Housing (Section 802), The City of Greater Response and associated Strategy, 2015). The majority of the Dandenong is given ‘legislative’ power plans; and population growth is likely to occur in to designate land liable to flooding the northern catchments, whether as from waterways and overland flows. In • Future mitigation works, infill development (dual occupancy) or partnership with Melbourne Water an including where investments medium density development. extensive flood modelling exercise for are urgently required. the urban areas of the city was carried Decreases in allotment size, increases out, in three northern catchments. in the size of dwellings and the State Government’s desire to increase The results from these studies are housing densities in these established discussed in the following sections. areas have resulted in increased urban
12 Sustainable Stormwater Strategy Figure 4. Northern Urban Catchments
Northwest Catchment
Central Catchment
Northeast Catchment
Activity Centres Police Rd Melbourne estall Rd Water Flooding
W
Monash Fwy Springvale Princes Hw Activity Centre
y Noble Park Activity Centre Heatherton Rd
Dandenong Stud Rd Activity Centre Lonsdale St
Cheltenham Rd
Dandenong Bypass South Gippsland Fw
Springvale Rd
Hutton Rd Greens Rd
y
South Gippsland Fwy
Mornington Peninsula Fwy
East Link
Thompson Rd
Thompsons Rd Dandenong Hastings Rd
Sustainable Stormwater Strategy 13 NORTHERN URBAN CATCHMENTS
Figure 5. City of Greater Dandenong Drainage and Waterway Assetss
5 from Engeny’s Flood Management Plan (2012)
14 Sustainable Stormwater Strategy Sustainable Stormwater Strategy 15 4. NORTHWEST CATCHMENT
The northwest catchment discussed The overland flow flooding that is in this section covers the area shown described above, occurs when the Flooding associated in Figure 6. In 2005, Council, in capacity of the drainage system is partnership with Melbourne Water, exceeded by the volume of stormwater with Council undertook the flood mapping of the runoff within the catchment. As infrastructure Edithvale, Noble Park and Parkmore drainage systems are only designed and Main Drains, which covered the constructed up to a certain capacity, Council is responsible for the care and majority of this catchment. the drainage systems are expected management of the overland flow for the minor drainage network throughout This catchment, approximately 13km2, to flood over certain storm severity. the Municipality. Council now uses flood covers predominantly residential areas. Recent developments are designed mapping information, where available to It includes: to ensure overland flows for storms up to 1 in 100 years return period are determine minimum flood levels for new • Springvale South; contained within the roads however, development and buildings located in this was not always the case. In older flood-prone areas (refer to page 13 and • The south western area of suburbs, overland flows may therefore figure 6). Noble Park; impact on properties, dwellings and The City of Greater Dandenong also • The suburb of Keysborough; and other buildings. This is generally what is recognises that flooding may be a major occurring in this catchment. • Parkmore Keysborough concern to residents and is committed Shopping Centre. Provided the drainage system was to identifying flood mitigations that designed in accordance with the are cost effective and provide the best The study shows that the flooding is relevant standards prevailing at the social and environmental outcomes. It “largely contained” within the road time, there is no legal obligation on is however, not feasible to provide flood reserve. It however, indicates that the Council to undertake improvements mitigation for every flooded property infrastructure servicing Walnut Crescent, to the existing drainage infrastructure. in the city. Flood mitigation works are Corrigan Road, Arena Square and Council is however, committed to being progressively undertaken in the adjacent areas are particularly flood reducing flood risk. Council’s ability to catchment to alleviate flood risk and prone, including during lower rainfall mitigate those risks is dependent upon protect our community. Burden Park event (10yr ARI). Council had previously whether the flooding is associated with is an example of flood mitigation work identified those areas as “at risk” due its infrastructure or with Melbourne recently undertaken by Council. to reported flooding issues. Other areas Water infrastructure, as discussed in the such as, between Athol Road and Harold following sections. Road, are also significantly at risk of flooding during larger flood event (50yr and 100yr ARI).
16 Sustainable Stormwater Strategy Figure 6
Northwest Catchment
Activity Centres
Melbourne Water Flooding
estall Rd
W
Springvale Activity Centre
Heatherton Rd
Cheltenham Rd Springvale Rd
Sustainable Stormwater Strategy 17 The City of Greater Dandenong also recognises that flooding may be a major concern to residents and is committed to identifying flood mitigations that are cost effective and provide the best social and environmental outcomes.
6 Melbourne Water’s Flood Risk Assessment (2010)
18 Sustainable Stormwater Strategy Flooding associated BURDEN PARK SPECIAL with Melbourne Water RETARDING infrastructure BUILDING BASIN Melbourne Water is responsible for the OVERLAY care and management of the overland The drainage system within flow for the major drainage network Special Building Overlay this catchment generally throughout the Municipality. Melbourne applies to land affected by consists of underground Water controls development in these flooding from piped system. pipes. It also includes a areas using planning controls, such as With the redevelopment of Special Building Overlay, which can be number of retarding basins, included into the Greater Dandenong existing urban areas and the including those located in Planning Scheme. proposed development of Burden Park, Laidlaw Court new areas, there is growing Melbourne Water aims are to minimise and Deborah Court. “the level of damage” that floods pressure to develop within overland flow path areas. The retarding basin within cause to the community. Melbourne Water has developed a Flood Risk Burden Park is situated at the The purpose of the Special Assessment Framework to assess corner of Heatherton Road and flood risks and identify the benefits of Building Overlay is to set Olympic Avenue, in Springvale flood risk management measures over appropriate conditions and South. As part of its drainage time. These risks are assessed based building floor levels to address upgrade program, the existing on likelihood and the economic, safety the flood risk and to ensure retarding basin was extended and social consequences. Melbourne that flood waters are not Water will invest in necessary flood and additional pipes were alleviation measures, when the risk is obstructed or diverted by installed to increase the overall “intolerable” and linked to Melbourne development. 6 capacity of the system. Water infrastructure . Source – Melbourne Water’s Using the flood modelling information, Guidelines for Development in This $165,000 approximate Flood-prone Areas (2008). investment reduces local Melbourne Water will identify and flood risk as well as in the investigate opportunities to address risks and develop a forward capital works downstream reaches of program for drainage upgrades based the catchment, south of on priority. Burden Park.
Sustainable Stormwater Strategy 19 5. CENTRAL CATCHMENT
The central catchment discussed in Flows along Mile Creek and Yarraman this section covers the area shown in Creek are generally contained within Flooding associated Figure 7. In 2010, Melbourne Water, in the channels with overtopping only partnership with Council, undertook occurring in isolated locations. with Council the flood mapping of the Mile Creek catchment, which covers the majority The overland flow flooding that is infrastructure of this catchment. described above, occurs when the Council is responsible for the care and capacity of the drainage system is management of the overland flow for This catchment, approximately 25km2, exceeded by the volume of stormwater the minor drainage network throughout contains predominantly residential areas, runoff within the catchment. As the Municipality. Council now uses flood as well as industrial and commercial drainage systems are only designed and mapping information, where available to developments. It includes: constructed up to a certain capacity, determine minimum flood levels for new • Springvale North, including the the drainage systems are expected development and buildings located in majority of Springvale activity to flood over certain storm severity. flood-prone areas (refer to page 13 and centre; and Recent developments are designed figure 7). to ensure overland flows for storms • Central and northern Noble Park, up to 1 in 100 years return period are The City of Greater Dandenong also including its activity centre. contained within the roads however, recognises that flooding may be a major this was not always the case. In older concern to residents and is committed This area also includes iconic sites of suburbs, overland flows may therefore to identifying flood mitigations that Greater Dandenong, including Sandown impact on properties, dwellings and are cost effective and provide the best Racecourse and the Springvale other buildings. This is generally what is social and environmental outcomes. It Botanical Cemetery. occurring in this catchment. is however, not feasible to provide flood The study shows that the flooding is mitigation for every flooded property Provided the drainage system was “largely contained” within the road in the city. Flood mitigation works are designed in accordance with the reserve. It however, indicates that the being progressively undertaken in the relevant standards prevailing at the infrastructure has limited capacity in catchment to alleviate flood risk and time, there is no legal obligation on some areas, which may become flood protect our community. Warner reserve Council to undertake improvements prone, including during lower rainfall is an example of flood mitigation works to the existing drainage infrastructure. event (10yr ARI). These areas include: recently undertaken by Council. Council is however, committed to • Between Princes Highway and reducing flood risk. Council’s ability to Centre Road; mitigate those risks is dependent upon whether the flooding is associated with • Along Wellington Road and its infrastructure or with Melbourne Flood mitigation works Wanda Street; Water infrastructure, as discussed in the • Along Browns Road and following sections. are being progressively Jacksons Road undertaken in the Council had previously identified those areas as “at risk” due to reported catchment to alleviate flooding issues. flood risk and protect our community.
20 Sustainable Stormwater Strategy Figure 7
Central Catchment
Activity Centres
Melbourne Water Flooding
Police Rd
estall Rd
W
Springvale Monash Fwy Activity Centre Princes Hwy
Heatherton Rd Noble Park Activity Centre
Stud Rd
L onsdale St
Cheltenham Rd
Springvale Rd
Dandenong Bypass
Sustainable Stormwater Strategy 21 CENTRAL CATCHMENT
WARNER RESERVE OVERLAND FLOWPATH
During the January 2011 flooding event, a number of factories in Bird Street were found to be inundated by flood water. Bird Street initially contains overland flooding, but in the event of heavy rain, water can accumulate at the end of Bird Street as there is no defined overland flow outlet. Stormwater runoff subsequently ponds and ultimately flows into factories located south of Bird Street. Council consequently constructed an overland flowpath to direct flood waters away from existing buildings and towards Mile Creek. The design and the construction for this open drain along Warner Reserve was completed in December 2014, at a cost of approximately $50,000 to Council. This drainage upgrade will reduce local flood risk.
7 Melbourne Water’s Flood Risk Assessment (2010)
22 Sustainable Stormwater Strategy Flooding associated Springvale Noble Park with Melbourne Water Activity Centre Activity Centre infrastructure The Springvale activity centre is a As part of Melbourne 2030, Noble popular and vibrant multicultural retail Park was defined as a Major Activity Melbourne Water is responsible for the and business centre in Melbourne’s Centre and its development is guided care and management of the overland south east. Springvale Activity Centre by a Structure Plan, last revised in June flow for the major drainage network Structure Plan was last revised in 2009. Noble Park is home to a diverse throughout the Municipality. Melbourne April 2010. In the current Structure community and its activity centre Water controls development in these Plan, Council identifies a number of includes a number of Council facilities, areas using planning controls, such as environmental objectives, linked to the including the Paddy O’Donoghue Multi Special Building Overlay (refer to page drainage infrastructure. These include: Purpose Community Centre and Noble 19), which can be included into the Park Aquatic Centre. Greater Dandenong Planning Scheme. • Constructing a Gross Pollutant Trap (GPT) to intercept solid wastes from The current Structure Plan identified that Melbourne Water aims are to minimise the centre prior to entering local a comprehensive plan for the staging “the level of damage” that floods waterways; and and upgrading of all assets across the cause to the community. Melbourne centre needed to be developed. To • Encouraging new residential Water has developed a Flood Risk promote sustainability, Council was development to incorporate WSUD. Assessment Framework to assess to investigate the implementation of flood risks and identify the benefits of Council has initiated the review of a storm water quality improvement flood risk management measures over the Structure Plan and it has been program for Noble Park traders. time. These risks are assessed based identified that the stormwater drainage Council is planning to review the on likelihood and the economic, safety infrastructures may need to be upgraded Structure Plan for Noble Park Activity and social consequences. Melbourne to cater for increased stormwater Centre in 2016/2017, which will provide Water will invest in necessary flood discharge, arising from higher density opportunities to consider drainage alleviation measures when the risk is development. Funding will also be infrastructure upgrades, to cater for “intolerable” and linked to Melbourne sought to build two GPTs within 7 increased stormwater discharge arising Water infrastructure . Springvale Shopping Centre. from higher density development.
Sustainable Stormwater Strategy 23 6. NORTHEAST CATCHMENT
The northeast catchment discussed in this section covers the area shown Flooding associated Central Dandenong in Figure 8. In 2010, Council, in partnership with Melbourne Water, with Council Activity Centre undertook the flood mapping of the In partnership with the City of Greater Dandenong catchment, which covers infrastructure Dandenong, Victorian Government, the majority of this catchment. Council is responsible for the care and through Places Victoria (formerly management of the overland flow for This catchment, approximately 18km2, VicUrban), is funding the $290 million the minor drainage network throughout covers predominantly residential and Revitalising Central Dandenong initiative the Municipality. Council now uses flood commercial areas. It includes: to rejuvenate the city centre. It includes mapping information, where available. To the delivery of new infrastructure • Dandenong and its activity centre; determine minimum flood levels for new projects, such as Lonsdale Street development and buildings located in Boulevard, Halpin Way and Settlers • Parts of Dandenong North; and flood-prone areas (refer to page 13 and Square, which intercept and recycle • The northern parts of figure 8). stormwater runoff. These stormwater Dandenong South. The City of Greater Dandenong also harvesting systems, were built in conjunction with significant pipe The mapping shows that flooding is recognises that flooding may be a major upgrades. As a result, flood risk is widespread across the catchment, concern to residents and is committed reduced in the Activity Centre and street as the catchment comprises older to identifying flood mitigations that amenity is improved. areas where the road reserve was not are cost effective and provide the best designed to contain overland flooding. social and environmental outcomes. It Alongside the new Municipal Civic As a result, overland flowpaths occur is however, not feasible to provide flood Centre, Council also played its part in through properties. This flooding is mitigation for every flooded property improving the local character of Central however relatively shallow, with deeper in the city. Flood mitigation works are Dandenong. New street-frontage in the flooding generally occurring in low lying being progressively undertaken in the Dandenong Station Precinct created a areas adjacent to Dandenong Creek and catchment to alleviate flood risk and pedestrian friendly environment, with in the McFees Road retarding basin. protect our community. the inclusion of over 90 WSUD tree pits. These WSUD tree pits, treat stormwater The overland flow flooding that is from the new roads and this passive described above, occurs when the irrigation reduces the need to water capacity of the drainage system is Flooding associated the plants. Stormwater from roads is a exceeded by the volume of stormwater significant pollutant contributor to our runoff within the catchment. As with Melbourne Water waterways and consequently, these drainage systems are only designed and infrastructure tree pits reduce pollution to the constructed up to a certain capacity, Dandenong Creek. the drainage systems are expected Melbourne Water is responsible for the to flood over certain storm severity. care and management of the overland Recent developments are designed flow for the major drainage network to ensure overland flows for storms throughout the Municipality. Melbourne up to 1 in 100 years return period are Water controls development in these The mapping shows contained within the roads however, areas using planning controls, such as this was not always the case. In older Special Building Overlay (refer to page that flooding is suburbs, overland flows may therefore 19), which can be included into the impact on properties, dwellings and Greater Dandenong Planning Scheme. widespread across other buildings. This is generally what is Melbourne Water aims are to minimise the catchment, as the occurring in this catchment. “the level of damage” that floods Provided the drainage system was cause to the community. Melbourne catchment comprises designed in accordance with the Water has developed a Flood Risk older areas where the relevant standards prevailing at the Assessment Framework to assess time, there is no legal obligation on flood risks and identify the benefits of road reserve was not Council to undertake improvements flood risk management measures over to the existing drainage infrastructure. time. These risks are assessed based designed to contain Council is however, committed to on likelihood and the economic, safety reducing flood risk. Council’s ability to and social consequences. Melbourne overland flooding. mitigate those risks is dependent upon Water will invest in necessary flood whether the flooding is associated with alleviation measures when the risk is its infrastructure or with Melbourne “intolerable” and linked to Melbourne 8 Water infrastructure, as discussed in the Water infrastructure . following sections.
8 Melbourne Water’s Flood Risk Assessment (2010)
24 Sustainable Stormwater Strategy Figure 8
Northeast Catchment
Activity Centres
Melbourne Water Flooding
Police Rd
Monash Fwy
Heatherton Rd
Princes Hwy
Stud Rd
Lonsdale St Dandenong Activity Centre
Dandenong Bypass
Sustainable Stormwater Strategy 25 NORTHEAST CATCHMENT
WATER extent of impervious surface • protecting the receiving and minimise alteration to natural water environment SENSITIVE the natural water cycle, by • enhancing stormwater temporarily storing the water URBAN DESIGN run-off water quality close to where it falls and Water Sensitive Urban slowly releasing it into the • reducing run-off and Design (WSUD) integrates ground or natural waterways, peak flows or providing it for ‘fit-for- stormwater treatment into • enhancing amenity site purpose’ uses. the urban landscape and value, while minimising offers an alternative to the WSUD provides numerous development costs traditional approach to stormwater quality and/ • reintegrating water features stormwater management. or flooding benefits if well within urban landscapes It seeks to minimise the designed, including:
26 Sustainable Stormwater Strategy Sustainable Stormwater Strategy 27 NORTHEAST CATCHMENT
When resources are available, actions The recommended timing for these Action Plan for will be generally resourced according actions is as follows: to their stated priority and timeline as • Immediate actions – to commence Northern Urban recommended by this plan. within 18 months (before 2017) Catchments The Action Plan recommends staged • Short-term actions – to commence timelines for implementation. These While the actions detailed in the Action between 18 months to 5 years recommended timeframes consider Plan are currently considered within (before 2021) Council’s sphere of influence, it is the complexity and nature of each important to be clear about Council’s action, some of which will require • Medium-term actions – to role and the role of other stakeholders further investigation or collaboration commence within 5–10years as well as priorities for action, funding, with external parties before they can be (before 2026) implemented. The relevance of some monitoring and review of the Strategy. Long-term actions actions, or their timing, may change due • – to commence Council’s resources are determined within 10–20 years (before 2036) annually by Council and other to availability of resources. stakeholders.
28 Sustainable Stormwater Strategy Objective Strategic Priority Action Outcomes / Responsibility Timeframe Indicators
Manage & Investigate Prioritise catchment Priority list Infrastructure Planning Immediate reduce and identify based on flood risk and Services flood risk (collaboratively with Infrastructure Planning Melbourne Water) Investigate and identify Flood capital Short-term and Services opportunities to flood mitigation options investment address risks and program develop a forward Obtain internal and Funding Infrastructure Planning Medium- capital works external funding to obtained and Services term program for drainage construct proposed City Improvement upgrades based on Flood alleviation capital works priority, risk and cost scheme benefit analysis constructed
Manage Investigate Undertake flood risks/ Cost Benefit Infrastructure Planning Immediate demand for planning controls planning control Analysis report and Services new and and market-based investigation study City Planning, Design improved tools to alleviate & Amenity drainage impact of urban systems consolidation and Corporate Services infill development Advocate for Melbourne Greater Infrastructure Planning Medium- on existing drainage Water to review and Dandenong and Services term infrastructure update the geographical Planning City Planning, Design extent of the Land Scheme updated & Amenity Subject to Inundation Corporate Services Overlay (LSIO) and Special Building Overlay (SBO) Strengthen local City Planning, Design Medium- planning policy and/or & Amenity term facilitate market-based Infrastructure Planning tools to manage flood and Services risk (where appropriate) Manage Develop an Develop a community Flood education City Planning, Design Medium- & reduce awareness program flood education program & Amenity term flood risk to educate our program (muniCity (brochures, Corporate Services (community community on the Improvement webpage etc). Infrastructure Planning expectations) role of water, our Programality-wide) drainage assets and and Services the community’s Community Services responsibilities in Community Services regards to flood risk Implement the above Flood education Medium- management community flood program Corporate Services term education program implemented City Planning, Design through existing & Amenity program/events Infrastructure Planning and Services
Sustainable Stormwater Strategy 29 7. NEW RESIDENTIAL DEVELOPMENTS
New land development projects, such as the Keysborough residential development (Figure 9), are subject to Stormwater Drainage Infrastructure Plans managed by Melbourne Water. These plans and effective collaboration with Council ensure that the local drainage assets are built to Council’s standards and specifications. Additionally, the major drainage infrastructure meets Melbourne Water’s requirements.
Key Strategic challenges for these areas include: • Managing the interface between new and old drainage infrastructure; and The areas where those new estates are • Managing green infrastructure, proposed generally include habitat of including WSUD systems. DEVELOPMENT high conservation and valuable native trees. As an example, over 3.5ha of high CONTRIBUTION or very high conservation significance Keysborough Plains Grassy Woodland (EVC 55), PLAN 11 large old trees and 176 scattered Residential trees were located within 130ha, part Council may generate of the broader Somerfield Estate (Brett Keysborough is a predominantly Lane & Associates, July 2011). Loss to residential and industrial suburb, and funds for capital works via native vegetation, whilst inevitable, is also includes market gardens and semi- Development Contribution minimised during the planning stage. rural properties. In recent years, the area Plan (DCP). This tool is Additionally, off-set targets are set to has seen a number of new residential applicable to a range of ensure “like-for-like” replacement. developments, such as Hidden Grove, assets, including drainage and industrial development, such as The infrastructure. This mechanism The road and drainage infrastructure, Key Industrial Park (discussed in the constructed as part of these new next section). Development is continuing is only applicable in new areas estates, alters the local hydrology and and ultimately, over 300 hectares of of development, and is driven may therefore impact on the long-term former market garden and farm land will through the Council master health of the remaining vegetation. be developed. and development process. Increasingly, Council Officers are observing that trees and vegetation The drainage system within these new DCP apply a fixed rate of become water-stressed following subdivisions ensures overland flows development. Church Road is a for storms up to 1 in 100 years return contribution across a broader recent example where, in partnership period are contained within the roads. area, such as a precinct, with the designers, steps were taken Additionally, these new housing estates and this one-off contribution to encourage passive irrigation of have benefited, or are benefiting, from is in addition to the annual streetscape River Red Gum (Eucalyptus Development Contribution Plans. As rates charge. camaldulensis). Council recognises that a result, both Council and Melbourne a similar proactive approach is required Water ultimately inherit a number Melbourne Water may also to ensure vegetation is more resilient of WSUD assets, which provide establish Development to altered hydrological conditions and additional amenity benefits to the Services Schemes (DSS) to future drought. community and minimise pollutants plan and fund the drainage reaching downstream waterways. The additional maintenance required for infrastructure required for new the local landscape features, including urban developments. these WSUD assets, is subject to a maintenance agreement between DCP and DSS have been Council and MW. applied in the City of Greater Dandenong for road and drainage infrastructure in inner residential developments in Lyndhurst and Keysborough.
30 Sustainable Stormwater Strategy Figure 9 – Keysborough new residential developments
New Residential Developments
Police Rd
estall Rd
W
Monash Fwy Princes Hw
y
Heatherton Rd
Stud Rd Lo
n sdale Cheltenham Rd
S t
Dandenong So Bypass uth Gippsland Fw
Springvale Rd
Hutton R d Greens Rd land Fwy
y th Gipps
u
So
Mor
nington Peninsula Fw
East Link
stings Rd
a
y
ong H
Thompson Rd
Thomp Danden sons Rd
Sustainable Stormwater Strategy 31 32 Sustainable Stormwater Strategy CHURCH ROAD – PASSIVE IRRIGATION
Church Road within the new Somerfield development was a typical rural road with no kerb and channel, gravel shoulders and drainage swales that traversed the length of the nature strip with trees (mature Rive Red Gum) planted along the swale edges. Runoff from the road and stormwater drained into the swale and provided a water supply for the existing trees. These trees provide shade and add to the amenity of the road. With the development of the land on both sides of the road, an upgrade in the road and provision of kerb and channel was required. Traditional design would have prevented road runoff reaching the existing and valuable River Red Gums. Consequently, an innovative kerb design was used and provided at intervals along the road to ensure continued passive irrigation of the trees, as shown below. This will ensure the trees are more resilient during dry periods and add value to neighbouring properties.
Sustainable Stormwater Strategy 33 NEW RESIDENTIAL DEVELOPMENTS
When resources are available, actions The recommended timing for these Action Plan for will be generally resourced according actions is as follows: to their stated priority and timeline as • Immediate actions – to commence New Residential recommended by this plan. within 18 months (before 2017) Developments The Action Plan recommends staged • Short-term actions – to commence timelines for implementation. These While the actions detailed in the Action between 18 months to 5 years recommended timeframes consider Plan are currently considered within (before 2021) Council’s sphere of influence, it is the complexity and nature of each important to be clear about Council’s action, some of which will require • Medium-term actions – to role and the role of other stakeholders further investigation or collaboration commence within 5–10 years (before as well as priorities for action, funding, with external parties before they can be 2026) implemented. The relevance of some monitoring and review of the Strategy. Long-term actions actions, or their timing, may change due • – to commence Council’s resources are determined within 10–20 years (before 2036) annually by Council and other to availability of resources. stakeholders.
34 Sustainable Stormwater Strategy Objective Strategic Priority Action Outcomes / Responsibility Timeframe Indicators
Manage the interface Develop improved Develop Guidelines Guidelines Infrastructure Short-term between new technical standards to assist developers prepared and Planning and and old drainage and guidelines in the preparation released to Services infrastructure for the design, of Stormwater the public City Development construction and Management Plans for City Planning, management of new developments drainage assets Design & Amenity
Manage green Develop improved Develop kerb design Standard Infrastructure Immediate infrastructure technical standards to promote passive drawings Planning and and guidelines irrigation, with due prepared and Services for the design, consideration of flood released to City Development construction and risk and safety the public management of green assets
Manage & reduce Develop an Develop a community Flood City Planning, Medium- flood risk (community awareness program flood education education Design & Amenity term expectations) to educate our program (municipality- program Corporate Services community on the wide) (brochures, Infrastructure role of water, our webpage etc). drainage assets and Planning and the community’s Services responsibilities in Community regards to flood risk Services management Implement the above Flood Community Medium- community flood education Services term education program program Corporate Services through existing implemented City Planning, program/events Design & Amenity Infrastructure Planning and Services
Sustainable Stormwater Strategy 35 8. INDUSTRIAL AND COMMERCIAL ZONES
Commercial and industrial zones – shown in Figure 10 – are extremely important to the economy of Greater FLOOD- Example of measures available Dandenong. Flooding may impact the to reduce potential floodwater community directly though damage PROOFING damage to the commercial building and/or indirectly, due to lost trade. Council’s OF EXISTING • Fit water resistant skirting priority within these areas is to boards minimise flood damage and BUILDINGS to minimise disruption, such as • Raise electrical sockets, road closure. Example of measures controls and wiring above available to prepare your projected flood levels. Key Strategic challenges for these property to flooding: areas include: The above list is not • Managing flood risks; and • Install purpose-built exhaustive and additional flood boards information can be found: • Managing pollution hotspot areas. • Raise door threshold ses.nsw.gov.au • Use non-return valve to Industrial/Commercial prevent water ingress onto areas in existing your property urban areas Industrial and commercial sites in the northern catchments share the same risk as adjacent residential areas. Overland Dandenong South flowpaths may occur through properties, Dandenong South is a predominantly Flooding may impact where the road reserve was not industrialised suburb. It also includes the community directly designed to contain overland flooding, some residential areas, along Kirkham as discussed on page 12. Road and Hammond Road. The though damage to the Provided the drainage system was development of this suburb is planned designed in accordance with the to continue, with projects such as Estate commercial building relevant standards prevailing at the time, One going ahead. A comparison of there is no legal obligation on Council Melbourne Water’s dataset with the 2012 and/or indirectly, due to undertake improvements to the aerial photograph shows that there has to lost trade. existing drainage infrastructure. Council been some increase in impervious areas 9 will program drainage upgrade works in South Dandenong , which is likely to as part of the capital improvement contribute to stormwater run-off and program in priority areas however, flood risk in the area. individual businesses should also New land development projects, such consider non-structural options, such as the Lyndhurst and the Keysborough as flood-proofing. industrial developments, are subject Ultimately, the stormwater runoff from to Development Services Schemes these industrial and commercial areas managed by Melbourne Water. These will discharge into local creeks and this schemes and effective collaboration with stormwater runoff has been identified as Council ensure that the local drainage a key risk to river health. assets are built to Council’s standards and specifications. Additionally, the major drainage infrastructure meets Melbourne Water’s requirements.
9 from Alluvium’s Integrated Water Management Background Report (March 2014)
36 Sustainable Stormwater Strategy Figure 10 – Industrial and Commercial Zones
Existing Urban
Dandenong South
Police Rd Logis Estate
estall Rd
W
Monash Fw Princes Hw
y y
Heatherton Rd
Stud Rd Lo
n sdale Cheltenham Rd
S t
Dandenong So Bypass uth Gippsland Fw
Springvale Rd
Hutton R d Greens Rd land Fwy
y th Gipps
u
So
Mor
nington Peninsula Fw
stings Rd
a East Link
y
Thompson Rd ndenong H
Thomp Da sons Rd
Sustainable Stormwater Strategy 37 INDUSTRIAL AND COMMERCIAL ZONES
Council has identified this area as a stormwater drainage system, to key catchment where additional flood determine whether there was evidence DEVELOPMENT mapping is required. This would allow of point source pollution. This monitoring Council to have in place controls that program revealed a number of possible SERVICES consider drainage and flooding issues pollution events, leading to heavy within this catchment. metals and hydrocarbons discharging SCHEMES to the receiving waterways. This point A number of industrial catchments source pollution presents a risk to the discharge into local creeks and Melbourne Water prepares environmental values associated with stormwater run-off has been identified as Development Services our waterways and is associated with a key source of pollution and therefore, the industrial land use in the catchment. Schemes (DSS) to plan and a risk to river health. The values Council has recently received additional fund the infrastructure associated with creeks within Greater funding from Melbourne Water to required for new urban Dandenong are discussed in more continue monitoring industrial pollution detail in on page 48. As a consequence, developments, meeting the hot spots. appropriate standards for Melbourne Water engaged the Centre flood protection, water quality, for Aquatic Pollution Identification and Management (CAPIM)10 to target and waterway health. certain areas of Greater Dandenong Schemes comprise of a catchment-based drainage strategy that outlines the functional designs of the INDUSTRIAL Council will work with relevant infrastructure required POLLUTION Melbourne Water, the EPA to service urban growth, and and Centre for Aquatic a pricing arrangement that HOT SPOTS Pollution Identification and details how we will recoup the – WATER Management (CAPIM) to infrastructure costs through target pollution hotspots. financial contributions paid by QUALITY Council’s Planning Compliance developers (from Melbourne team will use the results Water’s website). MONITORING to proactively identify and engage with local businesses. Council may also generate The City of Greater Dandenong The aim is to facilitate funds for capital works via has recently received funding compliance with permitted Development Contribution from Melbourne Water’s land uses and consequently, Plans (DCP). Living River grant to monitor protect the receiving natural DSS and DCP have been water quality in stormwater water environment. applied for road and drainage drains. Council will target infrastructure in commercial catchments in Industrial 1 and industrial developments in & 2 Zones, where industrial Dandenong South. practices may result in point sources pollution.
38 Sustainable Stormwater Strategy Logis Estate Retarding Basin
The drainage infrastructure was Logis Estate designed to ensure that flood depths Located on the Logis Estate, managed by Places in the road reserve do not exceed former Dandenong Victoria and in partnership with 300mm for 100yr ARI storm events. Melbourne Water, is a 154ha industrial A retarding basin has been designed Treatment Plant site, development and aims to be Victoria’s and constructed to alleviate existing first integrated eco-industrial business and future flood risk. This retarding this development aims park. Located on the former Dandenong basin will also act as a landscape Treatment Plant site, this development feature, to provide amenity to the to welcome a range of aims to welcome a range of industries, industrial business park. Ultimately, the industries, including including manufacturing and maintenance of this retarding basin will warehouses. be Council’s responsibility. manufacturing and warehouses.
10 A part of Melbourne University
Sustainable Stormwater Strategy 39 INDUSTRIAL AND COMMERCIAL ZONES
other stakeholders. When resources The recommended timing for these Action Plan for are available, actions will be generally actions is as follows: resourced according to their stated • Immediate actions – to commence Industrial and priority and timeline as recommended by within 18 months (before 2017) Commercial Zones this plan. • Short-term actions – to commence The Action Plan recommends staged While the actions detailed in the between 18 months to 5 years timelines for implementation. These Action Plan are currently considered (before 2021) within Council’s sphere of influence, recommended timeframes consider it is important to be clear about the complexity and nature of each • Medium-term actions – to Council’s role and the role of other action, some of which will require commence within 5–10years stakeholders as well as priorities for further investigation or collaboration (before 2026) with external parties before they can be action, funding, monitoring and review Long-term actions implemented. The relevance of some • – to commence of the Strategy. Council’s resources are within 10–20 years (before 2036) determined annually by Council and actions, or their timing, may change due to availability of resources.
40 Sustainable Stormwater Strategy Objective Strategic Priority Action Outcomes / Responsibility Timeframe Indicators
Understand Undertake detailed Develop a program to Program prepared Infrastructure Immediate flood risk flood inundation undertake flood mapping Planning and mapping in in Dandenong South Services Dandenong South Undertake flood Flood maps Infrastructure Short-term mapping in line with Planning and above program Services
Manage & Investigate and identify Prioritise catchment Priority list Infrastructure Medium- reduce (collaboratively with based on flood risk Planning and term flood risk Melbourne Water) Services opportunities to Infrastructure address risks and Investigate and identify Flood capital Long-term Planning and develop a forward flood mitigation options investment program Services capital works program for drainage upgrades Obtain internal and Funding obtained Infrastructure Long-term based on priority, Planning and external funding to Flood alleviation risk and cost benefit Services construct proposed scheme constructed analysis capital works City Improvement
Manage Engage and work with Implement water quality Water quality Regulatory Immediate pollution local businesses to monitoring program monitoring program Services hotspot areas reduce the risk of future to monitor stormwater in place Infrastructure pollution incidents pollution in Industrial 1 Planning and & 2 Zones in partnership Services with the Centre for Aquatic Pollution Identification and Management (CAPIM) and the Environment Protection Authority (EPA) Interpret and use results Engagement Regulatory Immediate from above program campaign Services to engage with local Infrastructure businesses Planning and Services Develop information Information package Regulatory Short-term package to support local Services businesses Corporate Services Manage Investigate planning Reinforce local laws Environmental City Planning, Medium- pollution controls to facilitate and planning controls management plans Design & term hotspot areas the implementation (where appropriate) in place for high risk Amenity of environmental and advocate for sites Regulatory management measures stronger environmental Services on industrial sites management measures Environmental on industrial sites Health
Sustainable Stormwater Strategy 41 9. GREEN WEDGE
Green Wedges are the non-urban A large portion of the Greater areas of metropolitan Melbourne Dandenong Green Wedge formed part of Bangholme that lie outside the Urban Growth the former Carrum Carrum Swamp. Boundary. The CGD Green Wedge The suburb of Bangholme includes – shown in Figure 11 – is part of The swamp was drained in 1879, as the Bangholme Lowlands Precinct, the larger South East Green Wedge part of a wider program of land drainage Bangholme East Precinct and the (SEGW), which spans across the Cities across Victoria, to improve transport Eastern Treatment Plant Precinct. All of Kingston, Greater Dandenong, links and enable agricultural practices. three precincts are identified in the Frankston and Casey. It is now bisected by a number of GWMP as having flooding as a key land waterways, such as Patterson River, use constraint. The Greater Dandenong Green Wedge Eumemmerring Creek and the Eastern The Bangholme area was severely covers an area of approximately 3,740ha Contour Drains. These waterways are impacted by the flooding event of and represents approximately 29% of generally separated from the adjoining February 2011. “Extreme shallow, the total area of the municipality. The floodplains by major levees, for flood but prolonged flooding of the overall majority of the Green Wedge is located protection. These levees are managed area occurred over several days, until at the southern end of the municipality and maintained by Melbourne Water. effective mitigation works could be put in and includes the suburbs of Bangholme, place by Melbourne Water and the City Keysborough South and Lyndhurst. The inherent low lying swampy of Greater Dandenong” (Neil M Craigie A smaller section, the “Clarke Road character of the landscape of the Green Pty Ltd, May 2011). These rainfall events Precinct”, is located in Springvale South. Wedge and upstream development present challenges to Council that adversely impacted on local residents, Key Strategic challenges for these are different from those incurred in their properties and their businesses. areas include: urbanised areas. Open drains generally Emergency sewage spills also occurred, resulting in additional concerns • Managing flood risks; and act as local drainage infrastructure, yet despite these, a significant proportion from a health perspective. Pumping • Managing drainage infrastructure of the Green Wedge is identified as operations continued for a couple of given the inherently low lying swampy flood-prone. weeks thereafter, Council provided character of the area. assistance to affected residents and The drainage and water management major maintenance operations were In 2013–2014 the City of Greater issues associated with the different undertaken to clean local open drains Dandenong developed its Green Wedge suburbs/areas of the Green Wedge are and waterways. Management Plan (GWMP) which is discussed in the following sections. Council’s strategy for the future of Drainage upgrades works were also its portion of the South East Green carried out by Melbourne Water, Wedge. The plan provides a clear vision, including the construction of a “low flow” objectives and actions for the future of Keysborough South pipe under Springvale Road and Soden the Green Wedge for the next 15–20 The suburb of Keysborough South Road and a flood warning system for years. The GWMP was adopted by includes the Hutton Road North Willow Lodge. Council in December 2014 and is now Precinct and Keys Road Precinct’s of Greater Dandenong’s adopted policy the Greater Dandenong Green Wedge. position regarding its portion of the The Keys Road Precinct is identified in South East Green Wedge. Additional the GWMP as having flooding as a key information can be found on land use constraint. Council’s website. Keysborough South is located north The GWMP has identified a number of Mordialloc Creek. The north levees of priority objectives related to water associated with Mordialloc Creek have management, including to: been found to restrict flows from the • Improve flood and inundation Keysborough South area and Melbourne management; Water has recently completed significant waterway works along Pillars Road, • Protect existing ecological values. removing the north levee to improve drainage capacity and the environmental values of the waterway.
42 Sustainable Stormwater Strategy Figure 11 – Greater Dandenong Green Wedge
Police Rd
estall Rd
W
Monash Fwy Princes Hw
y
Heatherton Rd
Clarke Road Precinct
Stud Rd Lo
n sdale Cheltenham Rd
S t
Dandenong So Bypass uth Gippsland Fw
Springvale Rd Hutton Road North Precinct Hutton R d Greens Rd land Fwy
Keys Road
Precinct y th Gipps
u
So
Mor
nington PeninsulaBangholme Fw Lowlands Precinct
East Link Eastern Bangholme stings Rd Treatment Plant East a Precinct Precinct y
ong H
Thompson Rd Lyndhurst Precinct Thomp Danden sons Rd
Sustainable Stormwater Strategy 43 GREEN WEDGE
FLOODING IN Following the 2011 flooding risk. Smythes Drain is also and Neil Craigie report, no longer connected to BANGHOLME Melbourne Water and Council Mordialloc Creek, reducing have undertaken significant floodwater entering the An important portion of cleanout works. Both agencies catchment. Additionally, Bangholme is prone to also have progressed remedial Council has reprofiled existing flooding. As a result, the water works to alleviate future open drains and constructed authority constructed a series flood risks. additional open drains to of levee to protect properties provide additional storage and Melbourne Water has from fluvial flooding and, in conveyance capacity in the reprofiled Smythes Drain and areas, have compensated land area. These drainage upgrades Springs Drain to improve owners (when planning for will reduce local flood risk. those levees) to allow the use capacity and constructed a of their properties as low flow pipes under Soden flood storage. Road to further reduce flood
WILLOW LODGE
Willow Lodge, a retirement village located off the Frankston-Dandenong Highway is vulnerable from flooding from the Eastern Contour Drain and as a result, Council has recently installed a flood warning system for the site. This autonomous flood alarm solution uses the public mobile phone network to receive commands and send flood warning information to a range of pre-programmed recipients. It is solar powered and requires no external cable connections for its effective operation. This flood warning system will assist Council in responding to flood events. It is also equipped with a flashing warning light which, once activated by high flood levels, may be used by the site manager and local residents.
44 Sustainable Stormwater Strategy monitored by the EPA and Council, in Eastern Treatment Lyndhurst respect to landfill gas and groundwater Plant (ETP) The suburb of Lyndhurst is situated pollution. The purpose of the planning across the municipal boundaries of both control is to provide interim use of the The ETP was opened in 1975 to serve the City of Greater Dandenong and the land that is compatible with the use Melbourne’s growing population. City of Casey. Whilst the area within and development of nearby land. Located in Bangholme South and the Greater Dandenong Green Wedge The past land use reduces future operated by Melbourne Water, the site is semi-rural, it is located downstream development opportunities within the covers approximately 1,100 ha and of the Lyndhurst residential area in precinct and currently, a minimum lot treats approximately 330 million litres the City of Casey, which is within the size of 4ha applies. of sewage a day, which represents Urban Growth Boundary. As a result, approximately 40% of Melbourne’s the forecast development is likely to sewage (Melbourne Water’s website, result in increased drainage and water 2015). The ETP is identified in the quality issues, as well as decline in GWMP as having flooding as a key land the condition of infrastructure, local use constraint. waterways and agricultural productivity. As a result, the ETP is considered to be of state significance and is protected by the Greater Dandenong Planning Clarke Road Precinct Scheme and EPA guidance, from the development of any inappropriate A small portion of the Greater use and/or more resident/occupier Dandenong Green Wedge is situated intensive use nearby. An Environmental in Springvale South. This precinct is Significance Overlay (ESO3) applies over centred around Clarke Road. As the the ETP and acts as a buffer around precinct does not contain any waterways the site. This overlay is in place to and has no known issues relating to protect the plant’s operations, adjacent flooding, current drainage infrastructure properties (due to related odour issues) is considered adequate. and allow for future expansion of The Spring Valley Reserve is located the ETP. within this precinct and is covered by It is of note however, that Plan the Special Use Zone (Schedule 2). Melbourne recognises that sensitive and The 2.2ha site forms part of the buffer incompatible uses are encroaching on zone of the former Clarke Road landfill the Eastern Treatment Plant. and consequently, the site is closely
Sustainable Stormwater Strategy 45 GREEN WEDGE
resourced according to their stated The recommended timing for these Action Plan for priority and timeline as recommended by actions is as follows: this plan. Green Wedge • Immediate actions – to commence The Action Plan recommends staged within 18 months (before 2017) While the actions detailed in the timelines for implementation. These Action Plan are currently considered • Short-term actions – to commence recommended timeframes consider within Council’s sphere of influence, between 18 months to 5 years the complexity and nature of each it is important to be clear about (before 2021) action, some of which will require Council’s role and the role of other further investigation or collaboration Medium-term actions stakeholders as well as priorities for • – to with external parties before they can be action, funding, monitoring and review commence within 5–10years implemented. The relevance of some of the Strategy. Council’s resources are (before 2026) actions, or their timing, may change due determined annually by Council and Long-term actions to availability of resources. • – to commence other stakeholders. When resources within 10–20 years (before 2036) are available, actions will be generally
46 Sustainable Stormwater Strategy Objective Strategic Priority Action Outcomes / Responsibility Timeframe Indicators
Manage & Undertake detailed Develop a program Program Infrastructure Immediate reduce flood risk flood inundation to undertake flood prepared Planning and mapping in the Green mapping in the Green Services Wedge Wedge Undertake flood Flood maps Infrastructure Short-term mapping in line with Planning and above program Services
Manage & Investigate Develop local Local Infrastructure Short-term reduce flood risk and identify stormwater drainage stormwater Planning and (collaboratively with master plans consistent drainage master Services Melbourne Water) with the land use and plans City Planning, opportunities to development objectives Design & Amenity address risks and of the Green Wedge (as develop a forward flood mapping becomes capital works program available) for drainage upgrades Infrastructure based on priority, Obtain internal and Funding Medium-term Planning and risk and cost benefit external funding to obtained Services analysis construct proposed Flood alleviation capital works City Improvement scheme constructed Manage demand Investigate planning Advocate for Melbourne Greater Infrastructure Long-term for new and controls to alleviate Water to review and Dandenong Planning and improved impact of flood update the geographical Planning Services drainage risk in the Greater extent of the Land Scheme City Planning, systems Dandenong Green Subject to Inundation updated Design & Amenity Wedge Overlay (LSIO) Corporate Services Protect & Identify opportunities Review existing and Opportunities Infrastructure Short-term enhance existing in the GDGW where proposed wetlands identified Planning and ecological new and existing and retarding basin in Services values wetlands/billabongs, the Green Wedge and City Planning, watercourses and identify opportunities to Design & Amenity retarding basins could create and/or enhance be established and habitat improved specifically to Advocate for Melbourne Melbourne Infrastructure Short-term improve fauna habitat Water to progress funding obtained Planning and (e.g. for native fish and opportunities identified Services amphibians) City Planning, Design & Amenity
Sustainable Stormwater Strategy 47 10. PARKS, RESERVES & WATERWAYS
Council’s role is to provide community Council is looking to reduce its spaces, such as parks, sporting Parks & Reserves reliance on water mains and increase facilities and green open-spaces. its resilience to drought conditions. Waterways within the municipalities The majority of the water used by Council is to irrigate sporting facilities Stormwater run-off represents a occasionally form part of these source of water which may be used community spaces. The locations of and open spaces. These parks are generally dependent on irrigation and to irrigate those reserves. Council has these important municipal features undertaken and initiated a number of are shown in Figure 12. are vulnerable to drought and water restrictions however, opportunities water-related projects implemented Key Strategic challenges for the exist to reduce Council’s total water across the municipality in recent years, management of these facilities include: consumption and increase the drought including Lonsdale St and Tatterson resilience of Council’s sport and Park. Council has also recently inherited • Maintaining high quality parks and recreational facilities. Stormwater -if another stormwater harvesting system facilities for residents and visitors to appropriately harvested and treated- comprising of two tanks along Halpin enjoy during droughts, when water can become a valuable resource to Way. These tanks provides storage restrictions are in place; support the delivery of these community equivalent to 51kL, to irrigate Settlers Park and nearby garden beds. These • Managing waterway with other services. Whilst Council’s annual budget projects also provide additional stakeholders to reduce flood risk to allows for the purchase of water from environmental benefits including amenity our community; and South East Water, irrigation demand is influenced by rainfall. and urban heat reduction benefits. • Managing waterway assets to provide Stormwater harvesting systems may be additional amenity benefits. Importantly, the reliance on drinking water from South East Water makes used to maintain high quality multi- Council’s operations vulnerable to use sport and recreational facilities for drought conditions. Recent water residents and visitors to enjoy during restrictions have had an adverse impact periods of drought. The water from on the condition of many sporting these systems may be used to irrigate reserves across Greater Dandenong. playing fields as well as to protect native Mains water irrigation would not be vegetation reserves during droughts. permitted for 75% of Council’s playing This more sustainable approach to the fields, during level 3A restrictions, as management of our water resources was the case between April 2007 and will assist to protecting these valuable August 2010. assets, given the value they bring to our community and to local biodiversity.
48 Sustainable Stormwater Strategy Figure 12 – Parks, Reserves & Waterways
Waterways Parks & Reserves Warner Reserve Tirhatuan Park Spring Valley Reserve Ross Reserve Healthy Bay Wetlands Police Rd Melbourne Water Wetlands Greaves Reserve Wachter Reserve Westall Rd Warner Reserve Robert Booth Reserve Tatterson Park Dandenong Creek Princes Hwy Monash Fw
y Tirhatuan Park Mile Creek Heatherton Rd Healthy Bay Wetlands Yarraman Ross Reserve Creek Melbourne Water Wetlands Greaves
Spring Valley Reserve d Rd Reserve Wachter Stu Robert Booth Reserve Reserve Lonsdale St
Lower Cheltenham Rd Dandenong Creek
Dandenong Bypass South Gippsland
Tatterson wy
F Springvale Rd Park d
Hutton Rd Greens Rd lan
F wy Mordialloc South Gipps Eumemmerring Creek Creek
Mornington Peninsula
ings Rd
t Patterson Creek s
East Link
F Ha wy
g
n
no Thompson Rd
Thompsons Dande Rd
Sustainable Stormwater Strategy 49 PARKS, RESERVES & WATERWAYS
TATTERSON a broad range of passive and the irrigation of the site’s active recreational uses for our playing fields and surrounds. PARK community. This system will reduce the consumption of drinking water, In partnership with Melbourne Tatterson Park is a 48ha park assist Council in maintaining Water, Council is constructing, located on Cheltenham Road this high quality amenity in stages, a stormwater in Keysborough and includes facility, as well as protecting harvesting system. This Springers Leisure Centre. the downstream waterways. Council’s vision is for the park system will ultimately supply to become a regional, multi- up to 20,000kL of stormwater purpose park that provides for from residential areas for
The information in this section is Waterways informed by Melbourne Water’s Index of The municipality The municipality is located in the River Condition (IRC), which is used to Dandenong catchment, in which assessed the condition of waterways, is located in Dandenong Creek is the major creek and Port Phillip and Westernport the Dandenong and floodway. It traverses approximately Regional River Health Strategy north-east to south-west from the (Melbourne Water, 2007). catchment, in which Dandenong Ranges National Park, drains into Patterson River, and Dandenong Creek is ultimately Port Phillip Bay. Tributaries include Eumemmerring Creek, Yarraman the major creek and Creek and Mile Creek. floodway.
50 Sustainable Stormwater Strategy The concrete-lined channel improves value is generally low, but good native Dandenong Creek the conveyance of the waterway fish populations are found in the lower Dandenong Creek is maintained by however, it also significantly reduces reaches. Additionally, a number of Melbourne Water and discharges to the environmental values associated threatened flora and fauna species Mordialloc Creek and Patterson River with the waterway. Additionally, higher reside within the catchment, such as the at the southern end of the municipality, velocity within the channel increases growling grass frog (Litoria raniformis). within the Green Wedge. Lower the safety risk. Dandenong Creek has benefited from Whilst the Dandenong Creek represents significant rehabilitation work in recent an important social value to the years, especially along the EastLink community within our boundary, its trail. Further north, especially along the river health is generally considered municipality west boundary, Dandenong poor. As a result of urbanisation and Creek is concrete-lined, as shown below. past modification, its environmental
Dandenong Creek downstream Lonsdale St – concrete-lined channel
Sustainable Stormwater Strategy 51 PARKS, RESERVES & WATERWAYS
RIVER concrete channel and Importantly, recent research replacing it with a more natural from the University of Western REHABILITATION and vegetated river bed. It may Australia indicates that provide a number of benefits the improved amenity also A majority of the waterways to the community, including: benefits house sale prices of within Greater Dandenong adjacent properties (UWA and • High value community have been heavily engineered CRC WSC, 2015). over the years and are often open space concrete channels, used • Improved local amenity for rapid conveyance of • Enhanced ecological values stormwater. River rehabilitation consists of removing this • Improved flood protection
Whilst the Eumemmerring Creek Mile Creek Eumemmerring Creek represents an important social value Mile Creek begins at the north-west The Eumemmerring Creek is a tributary to the community within our boundary, extent of the municipal boundary and of the Dandenong Creek. Its tributaries its river health is generally considered traverses south-east until it reaches include Troups Creek, Ti Tree Creek, poor. Melbourne Water have recently Dandenong Creek north of Keysborough. Hallam Main Drain and Eastern Contour constructed a number of water quality Similarly to Dandenong Creek, Mile Drain and it drains areas of Lyndhurst, treatment wetlands to reduce pollutants Creek acts more as a drainage asset Hampton Park and Endeavour Hills. in the waterways (and ultimately than an environmental asset. It is also The catchment is largely urban and entering Port Phillip Bay). Other wetland concrete-lined and is equipped with low rapidly expanding. This creek, as well systems are planned, just as the flow pipes. As a result, its aesthetics are as the Eastern Contour Drain, has been Glasscocks Road wetland. These will reduced, as shown on on page 53. engineered over the years. Levees provide an added level of protection located along the waterway protect to significant native species, such as The Noble Park Activity Centre Structure adjacent areas, but also reduce the Growling grass frogs and dwarf galaxias Plan identifies as an action for Council environmental values associated with (Galaxiella pusilla). to identify measures to improve water the waterway, its riparian habitat and quality and advocate Melbourne Water its floodplain. to remove “channelized sections of Mile Creek” (Noble Park Activity Centre Structure Park, June 2009).
52 Sustainable Stormwater Strategy Mile Creek downstream Springvale Road – concrete-lined channel
Yarraman Creek The site contains a zone of Riparian Woodland, adjacent to the Yarraman Similarly to Dandenong Yarraman Creek a tributary of Mile Creek and billabongs. This billabong Creek, is another significant watercourse system relies on seasonal water from Creek, Mile Creek located within Greater Dandenong. It is the Creek, but following EastLink culverted north of Princes Highway and construction and the creek realignment, acts more as a runs along the EastLink south of Princes the connectivity has been altered. The Highway within Fotheringham Reserve. altered hydrological and hydraulic drainage asset than an Fotheringham Reserve is approximately conditions impact on the health of environmental asset. It 16 hectares of public open space the remaining riparian vegetation and is potentially one of Dandenong’s and facilitate weed invasion. Whilst is also concrete-lined most important recreational and the billabongs have benefited from a environmentally significant areas. revegetation program funded by Council and is equipped with The Reserve contains one of the and Melbourne Water, additional works largest intact remnant River Red Gum are required to ensure the riparian low flow pipes. As a (Eucalyptus camaldulensis) woodlands vegetation is more resilient to altered result, its aesthetics within the municipality, providing habitat creek conditions and future drought. for many native species of plants and are reduced… animals, and acts as a passive recreation area for residents.
Sustainable Stormwater Strategy 53 PARKS, RESERVES & WATERWAYS
priority and timeline as recommended by • Immediate actions – to commence Action Plan for Parks, this plan. within 18 months (before 2017) Reserves & Waterways The Action Plan recommends staged • Short-term actions – to commence timelines for implementation. These between 18 months to 5 years While the actions detailed in the recommended timeframes consider (before 2021) Action Plan are currently considered the complexity and nature of each within Council’s sphere of influence, • Medium-term actions – to action, some of which will require it is important to be clear about commence within 5–10years further investigation or collaboration Council’s role and the role of other (before 2026) with external parties before they can be stakeholders as well as priorities for implemented. The relevance of some Long-term actions action, funding, monitoring and review • – to commence actions, or their timing, may change due of the Strategy. Council’s resources are within 10–20 years (before 2036) to availability of resources. determined annually by Council and other stakeholders. When resources The recommended timing for these are available, actions will be generally actions is as follows: resourced according to their stated
Objective Strategic Priority Action Outcomes / Responsibility Timeframe Indicators
Maintain high quality Investigate Identify (and Stormwater Infrastructure Immediate parks and facilities and identify prioritise) stormwater harvesting Planning and opportunities to harvesting (SWH) (SWH) Services recycle stormwater options for the Scoping Study City Planning, Design runoff for the irrigation of Council’s completed & Amenity irrigation of parks open space and Community Services across the City of recreational facilities Greater Dandenong where flood benefits can also be combined Progress detailed Detailed Infrastructure Short-term design of preferred design Planning and SWH system for the Services priority site locations City Improvement identified in SWH Scoping Study Obtain internal and Funding Infrastructure Medium-term external funding to obtained Planning and construct proposed Services SWH scheme SWH systems City Improvement constructed Maintain high quality Investigate Undertake Alex Water Infrastructure Immediate parks and facilities and identify Wilkie water requirement Planning and opportunities to requirement study report Services recycle stormwater prepared runoff for the irrigation of native Obtain internal & Funding Infrastructure Medium-term reserves across external funding to obtained Planning and the City of Greater construct proposed Services SWH scheme Dandenong drainage works City Improvement constructed
54 Sustainable Stormwater Strategy Objective Strategic Priority Action Outcomes / Responsibility Timeframe Indicators
Manage and enhance Investigate Investigate the Hydraulic Infrastructure Short-term our waterways and identify feasibility of study and Planning and (collaboratively with improving Mile economic Services Melbourne Water) Creek corridor assessment City Planning, Design opportunities between Springvale prepared & Amenity to rehabilitate Road and Sandown Community Services channelized section Racing Track for of waterways within amenity, recreation, the City of Greater biodiversity and Dandenong water quality purposes Work with Waterway Infrastructure Medium-term Melbourne Water rehabilitated Planning and and Melbourne Services Racing Club to carry out improvements to the Mile Creek corridor Investigate the Report Infrastructure Short-term feasibility of prepared Services and restoring the Services Fotheringham Reserve billabongs Obtain internal and Funding Infrastructure Medium-term external funding obtained Planning and to rehabilitate Services Billabong billabongs City Improvement scheme constructed Develop culvert Standard Infrastructure Medium-term design to promote drawings Planning and fish passage in our prepared and Services waterways released to the City Development public Manage & reduce Engage with Facilitate the Whole-of- Infrastructure Medium-term flood risk adjacent Councils development of Water Plan Planning and and other a whole-of-water prepared Services government plan for Dandenong collaboratively City Planning, Design stakeholders Creek (as previously with other & Amenity to promote a proposed by and to stakeholders more integrated the Office of Living management of Victoria) Dandenong Creek.
Sustainable Stormwater Strategy 55 56 Sustainable Stormwater Strategy Sustainable Stormwater Strategy 57 58 Sustainable Stormwater Strategy