| Commerce | |
|---|---|
 The Bolbec at Vallot mill | |
   | |
| Location | |
| Country | France |
| Region | Normandy |
| Physical characteristics | |
| Source | |
| • location | Pays de Caux |
| • elevation | 140 m (460 ft) |
| Mouth | |
• location | Seine |
• coordinates | 49°28′52″N 0°31′30″E / 49.48111°N 0.52500°E |
| Length | 15.5 km (9.6 mi) |
| Basin size | 160 km2 (62 sq mi) |
| Discharge | |
| • average | 0.240 m3/s (8.5 cu ft/s) |
| Basin features | |
| Progression | Seine→ English Channel |
The river Bolbec (French pronunciation: [bɔlbɛk]) or Commerce (French pronunciation: [kɔmɛʁs] ⓘ) is one of the rivers that flow from the plateau of the southern Pays de Caux in the Seine-Maritime département of Normandy into the Seine. It is 15.5 km (9.6 mi) long.[1]
The river rises at Bolbec and passes Gruchet-le-Valasse, where its name changes to the Commerce. It then passes through Lillebonne and joins the Seine at Notre-Dame-de-Gravenchon.
The river hosted many watermills that powered machinery to process both cotton and flax. The area became so prosperous it was named the Golden Valley.