Chambre d'Observation de la Passe à Poissons

Technical visits

Pets accepted
At the dam in Poses, visitors can see migrating fish travelling up the river Seine to go and reproduce in freshwater. Through large windows below the water level, you can observe the pools that allow fish to move over the dam, the first obstacle on the river Seine when coming from the sea. Salmon, sea trout, eels, common bream, alosa, sea lampreys and common bleak, which, for some of them, have travelled thousands of kilometres, are found here between April and August.
Contact details

Chambre d'Observation de la Passe à Poissons

Rue du BarrageBarrage de Poses

27740 POSES


Road (national / departmental)

Phone : 02 32 59 13 13


Obligatory for groups

Fixed telephone :

Telefax / fax :


  • Normandy Quality Tourism


Means of payment

Postal or bank cheques



Pets accepted

Specially for families


Supervised learning activity

Learning activity


Guided tour

Educational visits

Coach Parking


Visite guidées sur demande - yes
Average time75 minutes75 minutes
Further informationFor groups: tour of the dam, locks, the hydroelectric power plant and the observation of the fish room. Historical, environmental explanation of the Seine and works of art present on the site. Awareness raising of the environment based on aquatic environments and fish.
Minimum age - Maximum - From 5 years old


Coach parking
Groups acccepted
Minimum number of people 10
Maximum number of people 75
Visit of the observation room, of the hydropower plant (outdoor), of the dam and locks. The visit lasts from 1 hour 15 minutes to 1 hour 30 minutes.

Further information

Environment : By a lake or artificial lake, Near a green trail, Village