A look at the Parc de Joan Miró’s rain-water deposit

The Fàbrica del Sol is offering visits to Parc de Joan Miró’s rain-water deposit as part of the “How does Barcelona operate?” programme launched by Barcelona City Council’s Environment and Urban Services Department.

There are a total of 13 rain-water deposits throughout Barcelona, but the master plan provides for the Building of a total of 30 of them in several points along Barcelona’s sewerage network

The purpose of these deposits is very clear: first and foremost, to retain rain-water, which can be drained in a controlled way once the episodes of more intense rainfall have passed, to prevent any possible flooding. The most intense period of rainfall comes at the end of the summer and during the autumn. Parc de Joan Miró regulates the main drainage system along C/ Tarragona, to reduce discharges into the Gran Via area, in Passeig de la Zona Franca, C/ Diputació i Ciutat Vella. It also enables better control of the arrival of such water to the beaches through purification plants. This helps to avoid pollution of the coast area.

The deposits play a key role in managing water, but they are hardly visible, especially the ones laid underground. Even so, some 3,000 people a year have visited them to discover how they operate from close up. The Parc de Joan Miró depòsit can be visited and has a guided-tour service.

The Parc de Joan Miró depòsit boasts a total holding capacity of 55,000 m3 and a maximum depth of 17 m. It has two compartments: one is emptied by gravity and other by pumping. As with the other deposits, it has an automatic and programmable cleaning system using underground water which is capable of dragging out, through a wave of water, any mud that has become deposited at the bottom and leaving it ready for the next episode of rainfall.