Agriculture Reference
In-Depth Information
Figure 8.10:
a) Impact of scenario 3a on groundwater storage; b) Impact of
scenario 3b on groundwater storage.
Figure 8.10a shows that if 10% of the catchment is irrigated using
groundwater, there will be unsustainable use of groundwater in all three
catchments. A second scenario was analysed in which an improvement in
groundwater irrigation efficiency was considered. For reasons of simplifying
the analysis, a second scenario considers a future situation where the
irrigation efficiency for all technologies is 70%. This scenario is a possible
future scenario where irrigation policies can place benchmarks for improved
irrigation efficiencies. Table 8.9 shows how the improvement in irrigation
efficiency was estimated.
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