Passage 309 Fish Ladder - Gambsheim/France
Posted by: 
KaPsTeam
N 48° 41.068 E 007° 54.961
32U E 420215 N 5392946
Passage 309 has one of the largest fish ladders in Europe.
Waymark Code: WMMRM8
Location: Grand-Est, France
Date Posted: 10/29/2014
Views: 20
The Passage309 is a transnational project to create an eco-tourism area. In the scope of an INTERREG IIIA project basis for an environmentally friendly ecotourism have been created for this area.
One of the attractions of the project: the fish ladder in Gambsheim.
With the help of the 290 m long fish ladder fish can overcome the 10 m height difference between the upper and lower water. When the fish ladder is an open concrete channel with a slope of less than 4 degrees (1 m increase to 15 m). Located above the small integrated power plant section consists of a 200 m long cascade of 39 basins that are connected by vertical slots. Below the small power plant get the fish three different entrances to the fishway. The Spawn 1 and 2 are located in an area with strong currents. This flow is generated by the power plant outlet and attracts migratory fish such as salmon or sea trout. In the current of the power plant are arranged per strand 11 pool. Each basin has an area of about 13 square meters and a water depth of 1.65 m. The floor is covered with riprap, which favors colonization by benthic invertebrates. The slit width is 45 cm. The pelvic flow is 1, 2 m³ / s.
The integrated small-scale power plant uses the water for the leading stream of the fishway. It consists of two vertical Kaplan turbines with a total capacity of 1100 KW. The additional power generation by the small power plant is 3 million KWh per year.
For comparison, the existing hydroelectric power plant produces 650 million kWh / year.
In addition to small power station and fish ladder is at the fish pass Gambsheim a visitor center with three observation windows, each of which is 3 m long and 1, 80 m high. About staircase or elevator visitors of three feet below the exhibition with information panels about the construction of the fish ladder, the straightening of the Rhine, the reintroduction of the Rhine and the salmon occurring in the Rhine fish species.
About 30 species of fish use the fish ladder. Since a variety of factors such as water level, temperature, time of year and day determine the migratory behavior of the fish, visitors can look at the migrating fish are also denied. A large aquarium with fish stocking changing hosts for this local fish species.
Outdoors a viewpoint can be reached by two flights of stairs. He gives an overview of the area of the fish ladder. An orientation plan with descriptions facilitates the mapping. The visitor terrace offers a view of the top of the tank and the water flowing through.
Further Information: (
visit link)