Cère

The Cère is a French Rivière Massif Central which run in the dépatements Cantal, Corrèze, and Lot. It is important tributary of the the Dordogne out of left bank.

Geography

It takes its source in Auvergne with the collar of Make of Cère, located at the Lioran in the solid mass of the Plomb of the Cantal on the commune of Saint-Jacob of Blats. It forms one of the principal valleys of the Monts of the Cantal before emerging in small the sedimentary Bassin of Aurillac. She traverses then the Chantillian Châtaigneraie until Laroquebrou, then boxes herself in throats in the Xaintrie. She throws herself finally in the the Dordogne out of left bank, with the downstream of Bretenoux.

Caption

Small a nympe had allowed Cérès, the goddess of the harvests, to find his/her daughter carried with the hells by Pluton. Also, when the nymph was threatened by Apollon, Cérès flew to its help and transformed it into a river that in remembering one called the Cère.

Departments and main cities crossed

Hydrography

It is the most important Rivière of the Cantal. Several Barrage S is installed on its course. Most important is that of Saint-Etienne-Cantalès

Hydrology

The annual medium flow of Cère, calculated over 25 years, of 1983 to 2007, with Biars-on-Cère (Bretenoux), is of 26,5 m ³ a second for a surface of basin of 1.096 km ² (ref.: ).

The river present of important seasonal fluctuations of flow, with winter high waters from 32 to 43,2 m ³ from November to April included, and the thin ones of summer, in July - August-September, involving a fall of the monthly medium flow up to 5,9 m ³ in August, which remains very comfortable, it is true.

With the low water level, the VCN3 can fall until 1,9 m ³, in the event of dry quinquennial period, that is to say 1  900 liters a second, which is not too severe. The VCN3 is the past minimal quantity or minimal flow over three days consecutive.

As for the risings, they can be rather important, characteristic shared by the majority of the affluents of the Dordogne, but without common measurement with the risings of the affluents of the west of the basin of the Loire (Creuse, Gartempe, Mayenne, Sèvre Nantes) or the Cevennes rivers (Ardèche, Cèze, Gardon etc).

Thus the QIX 2 and QIX 5 or calculated flows of biennial and quinquennial rising are worth respectively 170 and 250 m ³ a second. The QIX 10 or calculated flow of decennial rising is of 300 m ³ a second, the QIX 20 of 350 m ³, while the QIX 50 is assembled to 420 m ³ a second (see note).

Always with Biars-on-Cère, the maximum instantaneous flow recorded during the period of observation, was of 274 m ³ a second on February 26th, 1995, while the value maximum day laborer was of 251 m ³ a second on January 3rd, 1994. By comparing the first of these values on a QIX scale of the river, one notes that this rising was not even of a decennial nature, and thus intended to very frequently reproduce.

Cèze is a very abundant river. The Lame of water past in the catchment area of the river is of 764 millimetres annually, which is very high, more twice average of whole France all confused basins, and results inter alia extremely abundant rainfall on the part of the basin located on the slopes of the Cantal. The specific flow (Qsp) is assembled thus at 24,1 liters a second and per square kilometer of basin.

Principal affluents

References

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