Auvézère

The Auvézère is a river south-west of the France of the areas the Limousin and Aquitaine. It is an affluent of the Isle out of left bank, therefore a tributary of a tributary of the the Dordogne.

Geography

It takes its source with 480 meters of altitude in the Massif Central in area the Limousin, in the department of the High-Vienna (87) in the south of Saint-Germain-the-Beautiful.

It enters at once in Corrèze (19).

It penetrates then in the Dordogne (24) and joins out of left bank of the Isle to Bassillac, little upstream of Périgueux.

Auvézère is a Rivière Périgord Vert, which one should not confuse with his big sister the Vézère.

On the commune of Cubjac, part of water of Auvézère disappears with the pit from the Mill from the Concern to join Isle.

Departments and main cities crossed

Principal affluents

N.B.: (rd) = affluent Right Bank; (rg) = affluent left bank

Hydrology

Auvézère is a rather abundant river, like the majority of the rivers resulting the heights of the Limousin. Its flow was observed during one 28 years period (between 1976 and 2007), with the Change, locality located little before its outlet in the Isle. Studied surface extends on 884 km ², that is to say almost the totality of the catchment area of the river.

The interannual medium flow or module of the river at the station of the Exchange is of 8,52 m ³ a second.

Auvézère is a river presenting of the seasonal fluctuations of flow marked enough. The period of high waters proceeds in winter and at the beginning of spring, and is characterized by average monthly flows going from 12,2 to 16,8 m ³ a second, from December to April included (with a maximum enough Net in January). As of May the flow decreases quickly (4,62 m ³ in June) to lead to the period of the low waters which takes place of at the beginning of July at the end of September, bringing a fall of the monthly medium flow going up to 1,87 m ³ to August. But the fluctuations of flow can be more important according to the years and over shorter periods.

With the low water level the VCN3 can fall until 0,22 m ³ a second, in the event of dry period quinquennial, that is to say 220 liters a second, which can be described as rather severe ().

The risings, as for them, can be important, taking into account of course the size of the catchment area. The QIX 2 and QIX 5, or flows calculated for a biennial and quinquennial rising, are worth respectively 110 and 160 m ³ a second. The QIX 10 or calculated flow of decennial rising is of 190 m ³ a second and the QIX 20 of 220 m ³. As for the QIX 50, it is assembled to 260 m ³ a second (see note). These figures are proportionally almost as important as those of the Vézère.

The maximum instantaneous flow recorded with the Exchange during this period, was of 182 m ³ a second on January 7th, 1982, while the recorded maximum daily output was of 158 m ³ a second on January 11th, 1996. If one compares the maximum flow actually recorded with the various QIX of the river described above, one notes that the rising of January 1982 was hardly of a decennial nature, and thus by no means exceptional, because statistically intended to repeat itself every 10 years on average.

Auvézère is a fairly abundant river, less than of other rivers of the basin from the Dordogne resulting from Eastern areas of the Massif Central. The Lame of water past in its catchment area is of 300 millimetres annually, which is a little lower than the overall average of the France all basins confused, but definitely lower than the average of the basin of the the Dordogne (623 millimetres in Bergerac) like that of the Vézère (590 millimetres with Montignac at the end of the course). The specific Débit of the river (or Qsp) posts of this fact the moderate figure of 9,7 liters a second and per square kilometer of basin.

Random links:Jean Benoit-Levy | France out of female world cup of Rugby 2006 | Institute of trade and management | Étomidate | Ka-Ha-if | Stephen_Boyd