- Type
- Harbour
River port on the Seine upstream of Rouen, at the last tidal lock on the river.
Guide
Approach and anchoring
Located on the Seine at kilometre point 202. The Amfreville-Poses lock system marks the limit of tidal influence on the Seine. Craft passing downstream enter tidal waters below the lock. Contact the lock keeper on VHF before transit.
Practical
Pontoons with water and electricity. Halte nautique managed by the commune. Fuel not available on site. Shops in Poses village within 500 m.
Ashore
Base de loisirs de Léry-Poses on the adjacent lake, 1 km, with swimming beach, pedalos and a sailing school. Musée de la Batellerie de Poses on the riverfront documents Seine barge traffic. Forêt de Bord-Louviers hiking trails start 3 km west.
History
The Poses lock was built between 1878 and 1887 and remains the downstream limit of canalised Seine traffic. Before canalisation the river was tidal as far as Rouen.
Key facts
- Type
- Harbour
- Coordinates
- 49.30415, 1.24765 (49°18.25'N 1°14.86'E)
- Country
- France
- Boaters' rating
- 4.2/5
- Updated
- July 7, 2026
Getting there
Poses lies at 49°18.25'N 1°14.86'E, that is 49.30415, 1.24765 in decimal degrees.
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How do boaters rate Poses?
Poses is rated 4.2/5 by boaters on BoatMap.
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