Sebou River
Iulia Valentia Banasa was located on the southern bank of the Sebou River on the site now known as Sidi Ali Boujenoun. At the start of the reign of Marcus Aurelius, Banasa became "Colonia Aurelia Banasa". In 285 AD, the Roman province of Mauretania Tingitana was reduced to the territories located north of the Lixus. Banasa was then abandoned.