Festival du Fleuve Senegal in Saint-Louis/Podor/Matam
No single festival was confirmed touring Saint-Louis, Podor, and Matam together under this name. The closest documented match is Les Rencontres sur le Fleuve, a literary and artistic river-cruise festival visiting Richard-Toll, Dagana, and Podor, distinct from both the Saint-Louis Jazz Festival and Podor's Blues du Fleuve.
The Senegal River genuinely anchors several distinct real festivals, but no single event called Festival du Fleuve Senegal, touring Saint-Louis, Podor, and Matam together, could be confirmed as one unified festival.