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| Merderet | |
|---|---|
 | |
   | |
| Location | |
| Country | France |
| Physical characteristics | |
| Source | |
| • location | Normandy |
| Mouth | |
• location | Douve |
• coordinates | 49°21′48″N 1°21′16″W / 49.36333°N 1.35444°W |
| Length | 36 km (22 mi) |
| Basin features | |
| Progression | Douve→ English Channel |
The Merderet is a 36.4-kilometre-long (22.6-mile) river in Normandy, France, which is a tributary to the river Douve.[1] It runs roughly north-south down the middle of the Cotentin peninsula from Valognes to the junction with the Douve at Beuzeville la Bastille.