Reyran

The Reyran is a torrent in the Var department in Provence-Alpes-Côte d'Azur, France and a tributary of the Argens. This ephemeral stream is 26.8 km long, originating in Bagnols-en-Forêt in the Var, 12 km from Fréjus.

The Reyran flows for approximately three months of the year and can be dry the rest of the time, with a very irregular flow. The annual rate is 22.70 million but can reach as low as 15.75 million once every 30 years. The flow rate is highest during the months of December, January, and April, and sometimes zero during July and August. During the summer months, the riverbed may present a series of isolated ponds that decrease in size daily. The bed of the Reyran consists of coarse sand and gravel up to 30–40 cm, with a lithology of surrounding rocks including sandstone, gneiss, pegmatite, and volcanic rocks.