The Reyran is a

torrent Torrent or torrents may refer to: * A fast flowing stream Animals * Torrent duck, a species of the family Anatidae * Torrent fish * Torrent frog, various unrelated frogs * Torrent robin, a bird species * Torrent salamander, a family of s ...

of the

Var Var or VAR may refer to: Places * Var (department), a department of France * Var (river), France * Vār, Iran, village in West Azerbaijan Province, Iran * Var, Iran (disambiguation), other places in Iran * Vár, a village in Obreja commune, C ...

department Department may refer to: * Departmentalization, division of a larger organization into parts with specific responsibility Government and military *Department (administrative division), a geographical and administrative division within a country, ...

Provence-Alpes-Côte d'Azur Provence-Alpes-Côte d'Azur (; or , ; commonly shortened to PACA; en, Provence-Alps-French Riviera, italic=yes; also branded as Région Sud) is one of the eighteen administrative regions of France, the far southeastern on the mainland. Its pref ...

, France and a tributary of the

Argens The Argens (; oc, Argens) is a 116 km long river of the French Riviera. Its drainage basin is fully included in the Var department.Bagnols-en-Forêt in the Var, 12 km from

Fréjus Fréjus (; ) is a commune in the Var department in the Provence-Alpes-Côte d'Azur region in Southeastern France. In 2019, it had a population of 54,458. It neighbours Saint-Raphaël, effectively forming one urban agglomeration. The north of ...

. The Reyran flows only three months a year and can be dry the rest of the year. Its flow is very irregular. The annual rate is 22.70 million m3 and once every 30 years reaches to only 15.75 million m3. The rate is highest during the months of December, January and April. The flow rate is sometimes zero during July and August. During the summer months, the river bed may present a series of isolated ponds that decrease in size by the day. The bed of the Reyran is made of coarse sand and

gravel Gravel is a loose aggregation of rock fragments. Gravel occurs naturally throughout the world as a result of sedimentary and erosive geologic processes; it is also produced in large quantities commercially as crushed stone. Gravel is classifi ...

up to 30–40 cm. Their

lithology The lithology of a rock unit is a description of its physical characteristics visible at outcrop, in hand or core samples, or with low magnification microscopy. Physical characteristics include colour, texture, grain size, and composition. Lit ...

is that of surrounding rocks:

sandstone Sandstone is a clastic sedimentary rock composed mainly of sand-sized (0.0625 to 2 mm) silicate grains. Sandstones comprise about 20–25% of all sedimentary rocks. Most sandstone is composed of quartz or feldspar (both silicates) ...

gneiss Gneiss ( ) is a common and widely distributed type of metamorphic rock. It is formed by high-temperature and high-pressure metamorphic processes acting on formations composed of igneous or sedimentary rocks. Gneiss forms at higher temperatures an ...

, pegmatite,

volcanic rocks Volcanic rock (often shortened to volcanics in scientific contexts) is a rock formed from lava erupted from a volcano. In other words, it differs from other igneous rock by being of volcanic origin. Like all rock types, the concept of volcanic ...

Fréjus

The Reyran is piped in through the city of

. A concrete canal was built after the

Malpasset Dam The Malpasset Dam was an arch dam (convex surface facing upstream) on the Reyran River, north of Fréjus on the French Riviera. It collapsed on 2 December 1959, killing 423 people in the resulting flood. The breach was caused by a tectonic fault ...

failure. These are preventive measures of the city against flood risks. The Reyran does not cause flood plain, as

Argens The Argens (; oc, Argens) is a 116 km long river of the French Riviera. Its drainage basin is fully included in the Var department.Garonne The Garonne (, also , ; Occitan, Catalan, Basque, and es, Garona, ; la, Garumna or ) is a river of southwest France and northern Spain. It flows from the central Spanish Pyrenees to the Gironde estuary at the French port of Bordeaux � ...

and Valescure to the neighboring town of Saint-Raphael. A flood of this type occurred in 2012 and destroyed the concrete ford located just downstream from the highway bridge, close to the ancient hamlet of

Malpasset The Malpasset Dam was an arch dam (convex surface facing upstream) on the Reyran River, north of Fréjus on the French Riviera. It collapsed on 2 December 1959, killing 423 people in the resulting flood. The breach was caused by a tectonic fault ...

devastated in 1959.Sandre, « Fiche cours d'eau - le Reyran (Y5320500) » rchive(consulté le 12 mars 2013) The Frejus runs north to south and empties into the Argens at the Naval Air Base of Frejus-Saint Raphael.

References

Rivers of France Rivers of Provence-Alpes-Côte d'Azur Rivers of Var (department) {{France-river-stub