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