Spanish project team will focus on the rivers of Arga and Aragón, which have been restored in the context of the National Strategy of River Restoration (Spain) and an EU funded Life project (“Territorio Visón”). The main objective for these restoration works were increasing hydrologic connection of the rivers with the surrounding floodplains, improving and diversifying the habitat to preserve species of special interest and buffer the effects of floods. All the area sits on top of alluvial aquifers which are continuously monitored in terms of quantity and quality of the water they store. The catchment has hundreds of kilometers of rivers within Natura 2000 sites that could potentially be subject to further restoration efforts. The catchment has a network of over 50 sampling sites monitored since 1994, used to estimate the chemical and biological state of the waters. There are 7 stations that continuously monitor common water parameters with sensors.