Os Alfredos

Average waste per m² in all riverside zones

Foreshore (Average waste per m²)

Backshore (Average waste per m²)

Riverbank crown (Average waste per m²)

Total number of waste items found (including single-use plastic)

Weight of all waste including plastic in kg

Flow velocity of the river (meters per second)

River width in m

Total number of floating waste

Larger Microplastics per 1,000 liters of river water

Larger Microplastics per m² of the riverbank