Introduction
You have reached the beach, near the car park. From the guingueta, looking about one hundred metres towards Gavà, you will see a water channel running through the beach sand.
This is the outlet to the sea of the estany de la Murtra. In the natural delta landscape, residual lagoons formed through water accumulation in depressed areas, river flooding, abandoned river branches (meanders), or, near the beach, through seawater intrusion during easterly storms.
With the development of agriculture, these lagoons were connected to the field drainage network and provided with outlets to the sea to regulate water levels. As a result, sluice gates control both the inflow and outflow of water, such as the one located beneath the C-31.
Around the lagoons, riparian vegetation was gradually reduced due to agricultural pressure. Today, aquatic vegetation remains (boga and canyís), along with invasive species such as pampa grass or cortadèria, brambles, planted tamarius, pine forest, and the canya americana, a major competitor that displaces native flora.