Lèze

The Lèze is a river in southern France, a left tributary of the Ariège river. The river flows through the French departments of Ariège and Haute-Garonne.
Geography.
The Lèze river has a length of and a drainage basin with an area of approximately .
Its average yearly discharge (volume of water which passes through a section of the river per unit of time) is at Labarthe-sur-Lèze in the Haute-Garonne department.
Average monthly discharge (m3/s) at Labarthe-sur-Lèze
Course.
The Lèze river starts in the Pyrenees mountain range in the southwest of the Ariège department, in the "commune" of La Bastide-de-Sérou, at an elevation of about .
It flows, in general, to the north and, after , it joins the Ariège river as a left tributary, at an elevation of about at Clermont-le-Fort.
Communes.
The Lèze passes through 1 region (Occitanie), 2 departments and 20 "communes"; some of the "communes" are:
Main tributaries.
The main tributary of the Lèze river is the "Latou", that is long.