CAISL Ecolution Team

26 October 2023

Ribeira de Colares

A montante da foz, na Praia das Maçãs

Location coordinates: 38.823459 -9.468655

Group A

Average waste per m² in all riverside zones

1.33

Foreshore (Average waste per m²)

1.33

Backshore (Average waste per m²)

0.67

Riverbank crown (Average waste per m²)

2

Group B

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

301

Weight of all waste including plastic in kg

3.835

Group C

Flow velocity of the river (meters per second)

0.48

River width in m

4

Total number of floating waste

3

Larger Microplastics per 1,000 liters of river water

-

Larger Microplastics per m² of the riverbank

1.77