The Carillon Dam is the first obstacle that migrating juvenile eels find on their way up the Ottawa River, upstream from the Lake of Two Mountains. The nearby locks are the only possible migration route. The Dam is 828 m long, including the spillway. It comprises 14 turbines over the 377 m long Power Stations and was inaugurated between 1962 and 1964.
In 2001 and 2010, MILIEU evaluated the presence and behaviour of migrating juvenile eels at the foot of the dam. Traps were installed and the captured fish were implanted with electronic tags (PIT tags).