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Figure 2.13
Lake Alexandrina Water Level and Salinity 2004-2008
-0.40-0.35-0.30-0.25-0.20-0.15-0.10-0.050.000.050.100.150.200.250.300.350.400.450.500.550.600.650.700.750.800.850.900.951.00
30/12/200329/01/200428/02/200429/03/200428/04/200428/05/200427/06/200427/07/200426/08/200425/09/200425/10/200424/11/200424/12/200423/01/200522/02/200524/03/200523/04/200523/05/200522/06/200522/07/200521/08/200520/09/200520/10/200519/11/200519/12/200518/01/200617/02/200619/03/200618/04/200618/05/200617/06/200617/07/200616/08/200615/09/200615/10/200614/11/200614/12/200613/01/200712/02/200714/03/200713/04/200713/05/200712/06/200712/07/200711/08/200710/09/200710/10/20079/11/20079/12/20078/01/20087/02/20088/03/2008
Date
0
500
1000
1500
2000
2500
3000
3500
ECLe
vel
5 day avg lake level Surcharge Level Full Supply Level 0.35m AHD 5 day avg EC Levels
Wetlands & water cleansingIn wet season, stormwater is detained in small basins and dams
Stormwater is controlled to move slowly through wetlands:
This results in reduction of;•Nutrient loads•Gross pollutants•Heavy metals
Confining LayerNatural
Recharge
Wetland/Basin
Stormwater and/orWastewater
Groundwater Level
SewageSewage
Treatment
Irrigation InjectionWell
Aquifer
Recovery from aquifer in dry seasonStorm/Waste-water to aquifer in wet season
Wet Season
Dry Season
GRAPHICS BY CSIRO LAND & WATER
Aquifer Storage and Recovery (ASR)
Stormwater
Confining LayerNatural
Recharge
Wetland/Basin
Stormwater and/orWastewater
Groundwater Level
SewageSewage
Treatment
Irrigation InjectionWell
Aquifer
Recovery from aquifer in dry seasonStorm/Waste-water to aquifer in wet season
Wet Season
Dry Season
GRAPHICS BY CSIRO LAND & WATER
Aquifer Storage and Recovery (ASR)
Stormwater
Current Position
53 Wetlands; 16 ASR Bores; Detention damsAdelaide water consumption – 200Gl– 80Gl from Murray; 180Gl in
dry yearStormwater flowing through Salisbury 33Gl– Currently capture 5Gl– Selling 1.5Gl– Plan to capture 14Gl within
5 years
Water Business Unit
Carries all debt, water asset management and operational expensesPurchases staff time from CouncilReceives all revenueInternal BoardBusiness case prepared for all new investment – Strong positive cash flow within 5 years
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
Mill
ions
08/09 09/10 10/11 11/12 12/13
Financial Year
Gross Revenue Forecasts
URBANADELAIDE
Total Average 216GlTotal Dry Year 216Gl
Adelaide Water Supply 2008
Waterproofing Adelaide – A Thirst for Change
SURFACE WATER OPPORTUNITIES
SYSTEM POTENTIAL (GL pa)
Surface Water Opportunities
Gawler 20
NorthernAdelaide 20
Barker 6
Torrens 15
Patawalonga 12
Brighton 5
SouthernAdelaide 22
TOTAL 100
20
20
12
15
12
5
22
106
Water SensitiveCity
Water CycleCity
Waterways City
Drained City
SeweredCity
Cumulative Socio-Political Drivers
Service Delivery Functions
Water SupplyCity
Supply hydraulics
Water supply access & security
Drainage, channelisation
Flood protection
Separate sewerage schemes
Public health protection
Evolving Urban Water HydroEvolving Urban Water Hydro--Social ContractSocial Contract
Brown et al (2008).
Point & diffuse source pollution management
Social amenity, environmental protection
Water SensitiveCity
Water CycleCity
Waterways City
Drained City
SeweredCity
Cumulative Socio-Political Drivers
Service Delivery Functions
Water SupplyCity
Supply hydraulics
Water supply access & security
Drainage, channelisation
Flood protection
Separate sewerage schemes
Public health protection
Evolving Urban Water HydroEvolving Urban Water Hydro--Social ContractSocial Contract
Brown et al (2008).
Point & diffuse source pollution management
Social amenity, environmental protection
Diverse, fit-for-purpose sources & end-use efficiency, waterway health restoration
Limits on natural resources
Water SensitiveCity
Water CycleCity
Waterways City
Drained City
SeweredCity
Cumulative Socio-Political Drivers
Service Delivery Functions
Water SupplyCity
Supply hydraulics
Water supply access & security
Drainage, channelisation
Flood protection
Separate sewerage schemes
Public health protection
Evolving Urban Water HydroEvolving Urban Water Hydro--Social ContractSocial Contract
Point & diffuse source pollution management
Social amenity, environmental protection
Diverse, fit-for-purpose sources & end-use efficiency, waterway health restoration
Limits on natural resources
Brown et al (2008), and Wong and Brown (2008)
Adaptive, multi-functional infrastructure & urban design reinforcing water sensitive values & behaviours
Intergenerational equity, resilience to climate change