The Rivari lagoon is located approximately 1.2 kilometers southeast of the Emporios settlement in Milos. It is a lagoon with a relatively large opening to the sea, in relation to its size. In the northern part, bordering the sea, there is a characteristic sandy islet with sand-loving vegetation and rows of planted salt marshes, ending in a rocky low hill. Its continental borders are lined with crops, some of which have been abandoned and colonized by overwater and allophytic vegetation. Clumps of posidonia grow in the lagoon and there are large concentrations of fish. The activities in the wetland are mainly related to the crops in the continental part, while it seems that in the past there were also fish farms (Rivaria) whose remains are visible towards the mouth. The water is salty mixed with a little sweet which comes mainly from surface runoff.