Buëch

The Buëch () is a river in southeastern France, a right tributary of the Durance. It is also called the Grand Buëch in its upper course just to the confluence with the "Petit Buëch" river.
Geography.
The Buëch 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 Laragne-Montéglin in the Hautes-Alpes department, for a period of 15 years.
Average monthly discharge (m3/s) at Laragne-Montéglin
Course.
The Buëch starts several kilometres to the east of "col de la Croix-Haute", a mountain pass in the western side of the "Massif du Dévoluy" mountains, in the "commune" of Lus-la-Croix-Haute, Drôme department, at an elevation of about . It then flows to the southwest and gets into the Hautes-Alpes department and then flows to the south.
Finally, the river flows into the Durance river, as a right tributary, near Sisteron, in the Alpes-de-Haute-Provence department.
The Buëch flows through 3 departments and 23 "communes", in 2 regions:
Main tributaries.
The main tributaries of the Buëch river are:
Left tributaries:
Right tributaries: