Simplify the following text for a Grade 8 native English-speaking person.
Original: CÃ cuta and Norte de Santander have many rivers , none of them with pollution problems , being the Pamplonita River , the Guaramito River , the San Miguel River and the Zulia River de most important .
Simplified: Rivers in CÃ cuta and Norte de Santander include the Pamplonita River , Guaramito River , San Miguel River and Zulia River .