Canal Biscarrosse - Cazaux 21 21 21 21 21 21 21 21 21 21 21 21.2 21.5 21.5 20.9 20.6 20.3 20.8 20.3 20.3 20.1 20.9 20.2 20.2 20.1 20.2 20 20 20 20 20 20 20 20 20 20 20 20 21.1 21.1 21.3 21.2 21 21 21 21 21 21.1 21 21 21 21 21 21 21 21 21 21 21 21 21 21