Investigations of the Tertiary Sand and the basement aquifer underlying Sections 789 and 873 Hd Yatala, indicate that only the basement aquifer has the potential to store storm water for subsequent reuse. Well equations to describe the behaviour of a well completed in this aquifer under discharge, drainage and injection have been developed. These show that the well can be pumped at a rate of 24 L/s for 10 000 minutes. A drainage rate of 13 L/s for a period of 10 000 minutes is possible. An injection rate of 23 L/s (2 ML/day) would result in 13 metres of head above ground at 10 000 minutes. A cautious estimate of 20 metres would result at 100 000 minutes. The salinity of the native groundwater in the basement aquifer is approximately 2600 mg/L.