Caí River Basin
Taquari River Basin
Uruguay River Basin
Parnaíba River Basin
Amazon River Basin
Paraguay River Basin (Pantanal)
Doce River Basin
Muriaé River Basin
Acre River Basin
Madeira River Basin
Branco River Basin
Xingu River Basin
Mundaú River Basin
Velhas River Basin
Itapecuru River Basin
Pomba River Basin
São Francisco River Basin