Théols


The Théols is a long river in central France.
Its source is at near Bommiers, in the Boischaut natural region.
It joins the Arnon near Lazenay.

Hydrology

The flow of the river was studied from 1971 to 1975 at Sainte-Lizaigne, located about from its confluence with the Arnon. At this point it drains, over 90% of its watershed.
The river has an average flow of at Sainte-Lizaigne.
There are seasonal fluctuations in the flow of the Théols, but they are not substantial. The highest flow rates are from February to May, with average flows from . From April, the flow rate decreases regularly toward low water, which lasts from August to October. Floods are seldom important. The daily maximum flow recorded at Sainte-Lizaigne was on March 22, 1974.
Its yearly drainage basin precipitation is currently, just over a third of the national average of, and also below the average of for the Loire basin and the Arnon. The discharge was hence per km² of basin.

Fish

The river is rich in bleak, barbel, largemouth bass, cream, pike, crucian, roach, gudgeon, rudd, perch, tench, zander and catfish.