at the same time some of the humid regions may need to manage additional precipitation by rethinking their conjunctive water management approaches to reduce recharge and increase use eg with more pumping drainage and less surface water use for irrigation to mitigate the potential risks of water logging and salinity chapter this chapter helped identify some of the key aspects of groundwater management on which to build locallyspecific strategies table of these two primordial items appear to be prominently missing in oecd countries andor necessary to ensure that groundwater is better used in the future new discoveries of groundwater sources in africa and under the seafloor as well as unprecedented published estimates of groundwater depletion in northern india and western united states show there is progress at least in some regions