The expansion of Viladecans, as the vast majority of towns located on the left riverbank of the River Llobregat (Sant Vicenç, Santa Coloma de Cervello, Sant Boi, Gavá, Castelldefels, etc.), has not only been hampered due to the riverbeds (rieras), but also has ignored them until they became outdoor sewers where waste waters were discharged and demolition debris was accumulated.
The recovery project for the Riera de Sant Climent aimed to consider the riverbed as a natural corridor that would work as a link between the agricultural park and the mountain across the town. This could turn the "riera" into an urban park, recovering its native vegetation and turning the covered sections into wooded promenades.
La Marina Park emerges as the culmination of the Riera de Sant Climent's green corridor. The riverbed is still uncovered along the park, thus creating some lateral impoundments that, in case of floods or overflowing of the river, they would act as temporary accumulation and lamination pools for rainwater. The groves and pathways system that comes from the North opens up and runs freely through the park, organising diversified itineraries. These pathways are sorted into two types: those that are located at the field level and those that, by means of modifications of the topography or of the construction of walkways, run through higher elevations and allow pedestrians to cross the riverbed or the surrounding streets. These topographic dunes enable the generation of different areas where we can locate the uses of the park: the natural amphitheatre, the fairground, the children's playground, the "Oloretum" (aromatic plants), the pinewoods and the picnic areas.
The park also aims to create a sustainable hydraulic system for the collection and infiltration of rainwater, as well as for the concept and irrigation system. The collection of rainwater is carried out by a system of vegetal canals of large section that, even being traced with very soft inclination, they can conduct the water to the designated inundation areas, thus avoiding sending it to the general sewerage system. This arrangement aims to maximise the infiltration of rainwater to the subsoil and its utilisation as natural irrigation.