Back Airport - Brownhill Creek
 

The major potential harvesting system for Brownhill and Keswick Creeks is at Adelaide Airport where a major on-line storage basin will capture flows under gravity. From the large basin, flow can then be distributed to an existing scheme in the Glenelg Golf Course and to a proposed significant biofiltration or media filtration system. A network of wells will then be required to inject treated flow. The location for this infrastructure has been selected with consideration to current uses at the airport, however, further negotiation with Adelaide Airport Limited will be required to pursue these options. The harvest volume at Adelaide Airport from both Sturt River and Brownhill and Keswick Creeks total more than 4 GL/a. Analytical and numerical modelling has demonstrated that a conceptual well field consisting of 30 wells completed in both the T1 and T2 aquifer within the Adelaide Airport site is hydrogeologically viable.The T1 and T2 wells would be co-located (within 5-10m of each other). Although an initial spacing of 500m for the ASR sites was used in the model, there is scope to reduce the spacing to 200-300m. Injection rates are expected to range between 8-10L/s for the T1 wells and 16-20L/s for the T2 wells.

BROWNHILL CREEKCAPTURE AND TREATMENTSTORAGE
Scheme
Buffer
storage
Diversion
pump
Wetland
size
Bioretention
size
Treatment
rate
Total
treated
Injection
rate
ASR wells
Surface
storage
Comment

MLL/shahaL/sML/yearL/sWellsML
Airport - Brownhill Creek 250 400 2 400 3130 15 27
Glenelg Golf Course 4 60 1.5 30 460 15 3
Orphanage 0.3 15 0.1 15 210 5-8 2
South Parklands 0.5 10 84 4-5 2
Urrbrae 1.2 24 140 5-8 4
Victoria Park 1 20 211 5-8 3
Total 4235 41 0