A sweeping lyrical narrative follows a great river from urban ports to rural bends, portraying boats, crews, and the rhythms of riverside life. The poem interweaves descriptions of local customs and religious processions with scenes of seasonal work, market trade, and communal festivity. Detailed natural imagery tracks changing weather and the river's moods while mourning technological and social changes. It is organized in twelve cantos, presented in the original Provençal alongside a French translation.