Thon (river)

The Thon or Ton is a small river in northern France. It is a tributary of the river Oise, which flows into the Seine. It crosses the Ardennes and Aisne departments and is the central river of the Thiérache.^[1]

Thon
Location
Country	France
Physical characteristics
Source
• elevation	273 m (896 ft)
Mouth
• location	Oise
• coordinates	49.9055°N 3.9084°E / 49.9055; 3.9084
Length	56.3 km (35.0 mi)
Basin features
Progression	Oise→ Seine→ English Channel