Maneadero Valley is a 35 km² coastal alluvial plain in Baja California, Mexico, producing high value crops such as tomatoes and cucumbers for local and export markets.
Food production is under pressure because of a shortage of freshwater for irrigation and already 1000 hectares of agricultural land had to be taken out of production because of increasing salinization of the groundwater. Reuse water is available from the nearby city of Ensenada, but storage capacity for this water is limited and there are concerns about the microbiological risks when using this water for irrigation of food crops. Designs are made for a subsurface solution: (1) storage of large volumes of reuse water in the saline subsurface, (2) thereby creating a barrier against further saltwater intrusion, securing the freshwater wells land inwards, and (3) removal of pathogens from the reuse water by soil aquifer passage to secure microbiological safe irrigation water. A field pilot is foreseen in 2018.
Partners: ARCADIS, National Autonomous University of Mexico (UNAM), AgroDer