Hydrogeological Desktop Study Essays

2742 WordsFeb 22, 201311 Pages
Proposal for Field Investigation: Assessment of Permits for water Extraction Establishment of Managed Aquifer recover (MAR) System 1. Introduction 2.1. Managed Aquifer Recovery Systems As reported by the South Australian local government of Charles Sturt (2012), Aquifer Storage and Recovery (ASR) or Managed Aquifer Recharge (MAR) is essentially the deliberate storage of surface water (i.e. in the form of stormwater, treated effluent etc) within aquifers. This process is used where water is pumped into aquifers for future usage. Furthermore, MAR systems avoid the need for expensive above ground water tanks, or reservoirs which are subject to significant water evaporation (Charles Sturt, 2012). As reported by the…show more content…
It is also proposed to locate an MAR 2km from the coast roughly in the middle of the study area. This MAR will inject tertiary treated sewage water into all three aquifers to prevent salinity intrusion that is occurring in that vicinity. As discussed above, we have an initial water balance from a previous study of the Study Area, and we have some new parameters to enter into our assessment, namely the proposal to extract 2 ML/d from the reservoir, and 5 ML/d from the river. We must also note that the proposed MAR does not specify how much water would be injected, and the proposed permits assessed below do not stipulate the quality of water required. If the permits below require high quality water, (i.e. better than tertiary treated effluent), the following assessment may be inaccurate. 3.4. Water Balance – Reservoir The initial water balance suggests that the water balance for the reservoir (i.e. the net change in water in storage) was 10450 ML / Year, and one of the proposed industrial plants is seeking a permit to extract 1825 ML / Year from the reservoir. We can see that the figures above are yield a decrease in the net change in water volume in storage in the reservoir, however there is still a significant amount of water in the reservoir throughout the year (8625

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