Glenorchy City Council (GCC) faced the challenge of storing
stormwater captured for re-use as industrial and irrigation supply.
Due to the urbanised nature of the area, limited surface water
storage opportunities existed.
The council appointed GHD to advise on suitable options. Our
team began by identifying a potential aquifer in a sand and
basalt-filled palaeo-channel of the Derwent River. We then designed
and carried out a geophysical, drilling, testing and modelling
program, which confirmed the presence of the aquifer and identified
extraction yields of up to 30L/s per bore. The team designed a bore
network and injection/extraction schedule to optimise limitations
of the available reticulation system, site access and the aquifer
variability. We also provided water quality input and output
requirements to the council’s treatment plant design team.
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