Clarence (river)
| Clarence | |
|---|---|
| The Clarence in Lapugnoy | |
| Location | |
| Country | France | 
| Physical characteristics | |
| Source | |
| • location | Picardie | 
| Mouth | |
|  • location | Lys | 
|  • coordinates | 50°38′16″N 2°38′45″E / 50.63778°N 2.64583°E | 
| Length | 33 km (21 mi) | 
| Basin features | |
| Progression | Lys→ Scheldt→ North Sea | 
The Clarence is a river in northern France whose 33-kilometre (21 mi) course crosses the department of Pas-de-Calais.
Its source is near the village of Sains-lès-Pernes. It flows through the communes of Sachin, Pernes, Calonne-Ricouart, Calonne-sur-la-Lys and Gonnehem, finally joining the Lys near Merville.
It has two tributaries, the Nave and the Grand Nocq.