Click on an area of the Tagus River where the water quality is regular.
Click on an area of the Tagus River where the water quality is good.
Click on an area of the Ebro River where the water quality is regular.
Click on an area of the Ebro River where the water quality is bad.
Click on an area of the Ebro River where the water quality is poor.
Click on an area of the Ebro River where the water quality is excellent.
Click on an area of the Guadalquivir River where the water quality is bad.
Click on an area of the Guadiana River where the water quality is bad.
Click on an area of the Guadiana River where the water quality is excellent
Click on an area of the Miño River where the water quality is excellent.
Click on an area of the Duero River where the water quality is good.
Click on an area of the Duero River where the water quality is regular.
Click on an area of the Llbregat River where the water quality is bad.