Briance

The Briance (of " braga" , mud) is a French river , small but abundant, which runs in the High-Vienna.

Geography

It takes its source with the Pigsty, commune of the south of the department located close to the Mont Gargan and is thrown, after a south-eastern/north-western way of a small about sixty Kilomètre S approximately, in the Vienna in Condat-on-Vienna (six Kilomètre S in south-west downstream from Limoges).

It crosses the communes of Pierre-Buffière (High-Vienna), of the Vigen (High-Vienna) of Solignac (High-Vienna) and to finish master key between Condat-on-Vienna (High-Vienna) and Bosmie-l' Aiguille (High-Vienna).

Affluent

the Roselle
the Ligoure the junction is done with the Château of Chalucet

Hydrology

The annual medium flow of Briance with Condat-on-Vienna locality located at its confluence, is of 8,17 m ³ a second.

The river presents seasonal fluctuations of flow, with winter risings from December to April included, and the thin ones of end of be-beginning of autumn, from July to October.

In period of low water level, the VCN3 can fall until 1,0 m ³, which remains rather high. Let us recall that the VCN3 is the past minimal quantity or minimal flow over three days consecutive.

The risings can be important. The QIX 2 and QIX 5 are worth respectively 73 and 100 m ³. They are the flows calculated for a biennial and quinquennial rising. The QIX 10, or calculated flow of decennial rising, is of 120 m ³ a second (see note).

The Lame of water of Briance is of 432 millimetres, which is definitely higher that of France in entirety, all confused basins, and of the same order of magnitude as those of the other rivers resulting from the high solid masses of the Limousin. The specific Débit (Qsp) is worth for its part 13,7 liters a second and per km ².

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