Combining metamodels with data assimilation schemes allows the incorporation of up-to-date information in metamodels. offering new opportunities for operational water resources management. We developed a data assimilation scheme for the unsaturated zone metamodel MetaSWAP using OpenDA. which is an open source data assimilation framework. https://www.jmannino.com/quick-grab-Shower-Cap-Romantic-Garden-big-savings/