Managed Artificial Recharge in the Llobregat Aquifers: Quantitative Versus Qualitative Aspects

Abstract

The area involving the Lower Valley and Delta of the Llobregat River has a long-standing tradition in Managed Artificial Recharge (MAR) activities. For more than 50 years different MAR activities have taken place, and at present the area provides a catalog of methodologies put into practice. This chapter provides an overview of artificial recharge activities in the river and riverbanks classified according to types, objectives, water sources, and focus. Regarding types, both surface and deep MAR activities can be found at different locations. In terms of objectives, we can distinguish between using opportunity water, resources increment, or improving groundwater quality. Regarding water sources, recharge water may come from the river, a diverted channel, or treatment plants. Finally, regarding focus, activities can be seen as used for scientific purposes, demonstration, or actual industrial activity.