ABSTRACT
This chapter draws on recent scientific knowledge of aquifer processes in managed aquifer recharge to inform practical applications. Processes discussed include: clogging and its management in infiltration basins and injection wells, recovery efficiency of recharged water, and water quality changes in aquifers. This scientific information has been applied in managed aquifer recharge guidelines for protection of human health and the environment and supported a policy framework for groundwater entitlements. When these are adopted or adapted by water resources managers within local groundwater management plans this will: facilitate recovery of overexploited aquifers, reduce costs of water supply, improve groundwater quality, protect groundwater dependent ecosystems, support measures to rationalise water demand, supply new industry and agriculture, and/or progress long-term water banking as a buffer against future droughts. Networking and knowledge exchange would help governments and development banks to recognise circumstances where groundwater replenishment, is a credible and efficient supply or water security measure. Advances in groundwater replenishment including water banking will help maximise the benefits of aquifers to society and thereby assist water resources managers to address the water security challenges of the 21st century.
