Ourthe

The Ourthe is a 166 kilometer (103 mile) long river in Wallonia's Ardennes (Belgium). It is a right tributary of the Meuse River. West of Houffalize, the Ourthe is formed by the confluence of the Ourthe Occidentale (Western Ourthe) and the Ourthe Orientale (Eastern Ourthe).

The source of the Ourthe Occidentale is in the Belgian province of Luxembourg, near Libramont-Chevigny. The Ourthe Orientale's source is near Gouvy, also in the Belgian province of Luxembourg, close to the Luxembourg border.

Following the confluence of the two Ourthes at Lake Nisramont, the Ourthe flows roughly north-west, then north-northeast. It flows for a short distance through the Namur province near Noiseux. It flows into Liège Province after passing through the municipality of Durbuy. It eventually flows into the Meuse River in the city of Liège. The Amblève and Vesdre are the two most important tributaries of the Ourthe. Houffalize (Ourthe Orientale), La Roche-en-Ardenne, Hotton, Durbuy, Hamoir, and Esneux are towns along the Ourthe.

Length: 166 km (103 mi)