IMPACT OF INTENSIFYING IRRIGATION DEVELOPMENT AND IMPLICATIONS FOR SUSTAINABLE WATER RESOURCES MANAGEMENT IN THE WHITE VOLTA SUBBASIN - Sustainable Irrigation Development in the White Volta Sub-Basin - page 201

Figure 8.11 Im pact of scenario 3c on groundwater storage
8.4.4 Impact of variations in groundwater
recharge on model results
The data used in the model are averages of observed figures. The next stage
of the impact analysis was to assess the sensitivity of modelling results on
assumed rates of groundwater recharge. A reduction in groundwater recharge
is not a likely future scenario because climate change is likely to increase
recharge. So this scenario should be seen as a worst possible case scenario,
assuming the present trend of more concentrated rainfall is reversed and
total rainfall becomes less.
Figure 8.12: a) Impact of reducing groundwater recharge by 10% on
groundwater irrigation; b) Impact of reducing groundwater recharge by 20%
on groundwater irrigation