COALA (COAstal LAgoon, Ref. PTDC/MAR/114217/2009) project aimed to contribute to study the nutrients and particulate matter dynamics - exchanges between Ria Formosa, south of Portugal, and the adjacent ocean through a multiple inlet system. As part of this project, two pressure sensors were placed in Ria Formosa to acquire sea level and temperature data, one in Faro-Olhão inlet and another 6 km upstream, in the Faro commercial pier, in addition to seventeen semi-diurnal tidal experimental campaigns carried out in the three inlets of the western sector of Ria Formosa.