Bouble
The Bouble is a French river of the Département Allier in area of Auvergne, affluent of left bank of the Sioule, in which it throws not very front Saint-Pourçain-on-Sioule. It is of this fact a tributary of a tributary Allier.
Hydrology
The annual medium flow of Bouble, calculated over 41 years with Chareil-Cintrat (of 1967 to 2007), is of 4,06 m ³ a second for a surface of basin of 555 km ². The river present of important fluctuations seasonal of flow, with risings winter-spring from 5,2 to 8,6 m ³, December to May included and maximum in February, and a marked low water level of end of be-beginning of autumn, July to September, characterized by a fall of the monthly medium flow up to 0,83 m ³ in September.
The VCN3 can fall until 0,025 m ³, that is to say only 25 liters a second, in the event of quinquennial dry. The VCN3 is the past minimal quantity or minimal flow over three days consecutive.
The Lame of water past in the basin is of 231 millimetres annually, which is relatively average in France. The specific Débit (Qsp) is assembled at 7,3 liters a second and per square kilometer of basin.
In Chareil-Cintrat, the recorded maximum instantaneous flow was of 188 m ³ a second, on February 4th, 2003.
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